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Form 8-K

sec.gov

8-K — Celldex Therapeutics, Inc.

Accession: 0001104659-26-038882

Filed: 2026-04-02

Period: 2026-04-01

CIK: 0000744218

SIC: 2835 (IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES)

Item: Entry into a Material Definitive Agreement

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — tm267111d2_8k.htm (Primary)

EX-1.1 — EXHIBIT 1.1 (tm267111d2_ex1-1.htm)

EX-5.1 — EXHIBIT 5.1 (tm267111d2_ex5-1.htm)

EX-99.1 — EXHIBIT 99.1 (tm267111d2_ex99-1.htm)

EX-99.2 — EXHIBIT 99.2 (tm267111d2_ex99-2.htm)

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GRAPHIC (tm267111d2_ex99-2img001.jpg)

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8-K — FORM 8-K

8-K (Primary)

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UNITED STATES

SECURITIES AND

EXCHANGE COMMISSION

Washington, D.C.

20549

FORM 8-K

CURRENT REPORT

Pursuant

to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

April 1, 2026

Celldex

Therapeutics, Inc.

(Exact name of registrant as specified in its

charter)

Delaware

000-15006

13-3191702

(State

or other jurisdiction of incorporation)

(Commission

File Number)

(IRS

Employer Identification No.)

Perryville III Building, 53 Frontage Road, Suite 220,

Hampton,

New Jersey 08827

(Address of principal executive offices) (Zip

Code)

(908)

200-7500

(Registrant’s telephone number, including

area code)

Check the appropriate box below if the Form 8-K

filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨

Written communications

pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨

Soliciting

material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨

Pre-commencement

communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨

Pre-commencement

communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered

pursuant to Section 12(b) of the Act:

Title

of each class

Trading

Symbol(s)

Name

of each exchange on which registered

Common

Stock, par value $.001

CLDX

Nasdaq

Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR

§230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging

growth company ¨

If

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 1.01 Entry into a Material Definitive Agreement.

On April 1, 2026, Celldex Therapeutics, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting

Agreement”) with Leerink Partners LLC and TD Securities (USA) LLC, as representatives of the several underwriters named therein

(the “Underwriters”), relating to the offering, issuance and sale of 10,345,000 shares (the “Shares”) of the Company’s

common stock, par value $0.001 (the “Common Stock”), at a price to the public of $29.00 per share (the “Offering”).

The net proceeds to the Company from the Offering are expected to be approximately $282 million, after deducting underwriting discounts

and commissions and other estimated offering expenses payable by the Company. The Offering is expected to close on or about April 6, 2026,

subject to customary closing conditions. Pursuant to the Underwriting Agreement, the Underwriters have a 30-day option to purchase up

to 1,551,750 additional shares of Common Stock at the purchase price per Share to be paid by the Underwriters (the “Option”).

The Offering is being made

pursuant to a prospectus supplement, dated April 1, 2026 (the “Prospectus Supplement”), to be filed with the Securities and

Exchange Commission (the “SEC”), and an accompanying base prospectus that forms a part of the Company’s automatically

effective shelf registration statement on Form S-3 (File No. 333-275300) previously filed with the SEC.

The Underwriting Agreement

contains customary representations, warranties and agreements by the Company, conditions to closing, indemnification obligations of the

Company and the Underwriters, including for liabilities under the Securities Act of 1933, as amended, other obligations of the parties

and termination provisions. The representations, warranties and covenants contained in the Underwriting Agreement were made only for purposes

of such agreement and as of specific dates, were solely for the benefit of the parties to such agreement, and may be subject to limitations

agreed upon by the contracting parties.

The foregoing description

of the Underwriting Agreement is not complete and is qualified in its entirety by reference to the full text of the Underwriting Agreement,

a copy of which is filed as Exhibit 1.1 to this Current Report on Form 8-K and is incorporated by reference herein. A copy of the opinion

of Lowenstein Sandler LLP relating to the legality of the issuance and sale of Shares in the Offering is attached as Exhibit 5.1 to this

Current Report on Form 8-K and is incorporated by reference herein.

Item 8.01 Other Events.

On April 1, 2026, the Company

issued a press release regarding the launch of the Offering. On April 1, 2026, the Company also issued a press release announcing that

it had priced the Offering. Copies of the launch press release and pricing press release are filed as Exhibits 99.1 and 99.2, respectively,

to this Current Report on Form 8-K and are incorporated by reference herein.

Forward-Looking Statements

Statements contained in this

Current Report on Form 8-K regarding matters that are not historical facts are “forward-looking statements” within the meaning

of the Private Securities Litigation Reform Act of 1995. Such statements may involve risks and uncertainties, such as statements related

to the anticipated closing of the Offering, the amount of proceeds expected from the Offering and the potential exercise by the Underwriters

of the Option. The risks and uncertainties involved include the Company’s ability to satisfy certain conditions to the closing of

the Offering on a timely basis or at all, as well as other risks detailed from time to time in the Company’s SEC filings, including

in its annual filing on Form 10-K filed with the SEC on February 25, 2026 and the Prospectus Supplement.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

No.

Description

1.1

Underwriting Agreement,

dated April 1, 2026, by and among Celldex Therapeutics, Inc. and Leerink Partners LLC and TD Securities (USA) LLC, as representatives of the several

underwriters named therein

5.1

Opinion of Lowenstein Sandler LLP

23.1

Consent of Lowenstein Sandler LLP (contained in Exhibit

5.1)

99.1

Press Release dated April 1, 2026

99.2

Press Release dated April 1, 2026

104

Cover Page Interactive Data File (embedded within the

Inline XBRL document)

SIGNATURE

Pursuant to the requirements

of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto

duly authorized.

CELLDEX THERAPEUTICS, INC.

Dated: April 2, 2026

By:

/s/ Sam Martin

Name:

Sam Martin

Title:

Senior Vice President and Chief Financial Officer

EX-1.1 — EXHIBIT 1.1

EX-1.1

Filename: tm267111d2_ex1-1.htm · Sequence: 2

Exhibit 1.1

CELLDEX THERAPEUTICS, INC.

10,345,000 Shares of Common Stock

(par value $0.001 per share)

Underwriting Agreement

April 1, 2026

LEERINK PARTNERS LLC

TD SECURITIES (USA) LLC

As Representatives of the several

Underwriters

c/o LEERINK PARTNERS LLC

53 State Street, 40th Floor

Boston, Massachusetts 02109

c/o TD Securities (USA) LLC

1 Vanderbilt Avenue

New York, New York 10017

Ladies and Gentlemen:

Celldex Therapeutics, Inc.,

a Delaware corporation (the “Company”), proposes to issue and sell to the several underwriters named in Schedule

A (the “Underwriters”) an aggregate of 10,345,000 shares of its common stock, par value $0.001 per share (the

“Shares”). The 10,345,000 Shares to be sold by the Company are called the “Firm Shares.” In addition,

the Company has granted to the Underwriters an option to purchase up to an additional 1,551,750 Shares pursuant to such option collectively

called the “Option Shares.” The Firm Shares and, if and to the extent such option is exercised, the Option Shares,

are collectively called the “Offered Shares.” Leerink Partners LLC and TD Securities (USA) LLC have agreed to act as

representatives of the several Underwriters (in such capacity, the “Representatives”) in connection with the offering

and sale of the Offered Shares. To the extent there are no additional underwriters listed on Schedule A, the term “Representatives”

as used herein shall mean Leerink Partners LLC and TD Securities (USA) LLC, as Underwriters.

The Company has prepared and

filed with the Securities and Exchange Commission (the “Commission”) a shelf registration statement on Form S-3,

File No. 333-275300, including a base prospectus (the “Base Prospectus”) to be used in connection with the public

offering and sale of the Offered Shares. Such registration statement, as amended, including the financial statements, exhibits and schedules

thereto, in the form in which it became effective under the Securities Act of 1933, as amended, and the rules and regulations promulgated

thereunder (collectively, the “Securities Act”), including all documents incorporated or deemed to be incorporated

by reference therein and any information deemed to be a part thereof at the time of effectiveness pursuant to Rule 430A or 430B

under the Securities Act, is called the “Registration Statement.” Any registration statement filed by the Company pursuant

to Rule 462(b) under the Securities Act in connection with the offer and sale of the Offered Shares is called the “Rule 462(b) Registration

Statement,” and from and after the date and time of filing of any such Rule 462(b) Registration Statement the term

“Registration Statement” shall include the Rule 462(b) Registration Statement. The preliminary prospectus supplement

dated April 1, 2026 describing the Offered Shares and the offering thereof (the “Preliminary Prospectus Supplement”),

together with the Base Prospectus, is called the “Preliminary Prospectus,” and the Preliminary Prospectus and any other

prospectus supplement to the Base Prospectus in preliminary form that describes the Offered Shares and the offering thereof and is used

prior to the filing of the Prospectus (as defined below), together with the Base Prospectus, is called a “preliminary prospectus.”

As used herein, the term “Prospectus” shall mean the final prospectus supplement to the Base Prospectus that describes

the Offered Shares and the offering thereof (the “Final Prospectus Supplement”), together with the Base Prospectus,

in the form first used by the Underwriters to confirm sales of the Offered Shares or in the form first made available to the Underwriters

by the Company to meet requests of purchasers pursuant to Rule 173 under the Securities Act.

As used herein, “Applicable

Time” is 7:00 p.m. (New York City time) on April 1, 2026. As used herein, “free writing prospectus”

has the meaning set forth in Rule 405 under the Securities Act, and “Time of Sale Prospectus” means the Preliminary

Prospectus, as amended or supplemented immediately prior to the Applicable Time, together with the free writing prospectuses, if any,

identified on Schedule B hereto and the pricing information set forth on Schedule C hereto. As used

herein, “Road Show” means a “road show” (as defined in Rule 433 under the Securities Act)

relating to the offering of the Offered Shares contemplated hereby that is a “written communication” (as defined in Rule 405

under the Securities Act). As used herein, “Marketing Materials” means any materials or information provided to investors

by, or with the approval of, the Company in connection with the marketing of the offering of the Offered Shares, including any Road Show

or investor presentations made to investors by the Company (whether in person or electronically).

All references in this underwriting

agreement (this “Agreement”) to the Registration Statement, the Preliminary Prospectus, any preliminary prospectus,

the Base Prospectus and the Prospectus shall include the documents incorporated or deemed to be incorporated by reference therein. All

references in this Agreement to financial statements and schedules and other information which are “contained,” “included”

or “stated” in, or “part of” the Registration Statement, the Rule 462(b) Registration Statement, the

Preliminary Prospectus, any preliminary prospectus, the Base Prospectus, the Time of Sale Prospectus or the Prospectus, and all other

references of like import, shall be deemed to mean and include all such financial statements and schedules and other information which

is or is deemed to be incorporated by reference in the Registration Statement, the Rule 462(b) Registration Statement, the Preliminary

Prospectus, any preliminary prospectus, the Base Prospectus, the Time of Sale Prospectus or the Prospectus, as the case may be.

All references in this Agreement

to amendments or supplements to the Registration Statement, the Preliminary Prospectus, any preliminary prospectus, the Base Prospectus,

the Time of Sale Prospectus or the Prospectus shall be deemed to mean and include the filing of any document under the Securities Exchange

Act of 1934, as amended, and the rules and regulations promulgated thereunder (collectively, the “Exchange Act”)

that is or is deemed to be incorporated by reference in the Registration Statement, the Preliminary Prospectus, any preliminary prospectus,

the Base Prospectus, or the Prospectus, as the case may be.

All references in this Agreement

to (i) the Registration Statement, the Preliminary Prospectus, any preliminary prospectus, the Base Prospectus or the Prospectus,

any amendments or supplements to any of the foregoing, or any free writing prospectus, shall include any copy thereof filed with the Commission

pursuant to its Electronic Data Gathering, Analysis and Retrieval System (“EDGAR”) and (ii) the Prospectus shall

be deemed to include any “electronic Prospectus” provided for use in connection with the offering of the Offered Shares as

contemplated by Section 3(n) of this Agreement.

In the event that the Company

has only one subsidiary, then all references herein to “subsidiaries” of the Company shall be deemed to refer to such single

subsidiary, mutatis mutandis.

The Company hereby confirm

its agreements with the Underwriters as follows:

1.             Representations

and Warranties of the Company. The Company hereby represents, warrants and covenants to each Underwriter, as of the date of this Agreement,

as of the Applicable Time, as of the First Closing Date (as hereinafter defined) and as of each Option Closing Date (as hereinafter defined),

if any, as follows:

(a)               Compliance

with Registration Requirements. The Registration Statement has become effective under the Securities Act. The Company has complied,

to the Commission’s satisfaction, with all requests of the Commission for additional or supplemental information, if any. No stop

order suspending the effectiveness of the Registration Statement is in effect and no proceedings for such purpose have been instituted

or are pending or, to the best knowledge of the Company, are contemplated or threatened by the Commission. At the time the Company’s

Annual Report on Form 10-K for the year ended December 31, 2025 (the “Annual Report”) was filed with the

Commission, or, if later, at the time the Registration Statement was originally filed with the Commission, as well as at the time the

Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) under the Securities Act)

made any offer relating to the Offered Shares in reliance on the exemption of Rule 163 under the Securities Act, the Company was

a “well known seasoned issuer” as defined in Rule 405 under the Securities Act. The Registration Statement is an “automatic

shelf registration statement,” as defined in Rule 405 under the Securities Act, and became effective on November 3, 2023.

The Company has not received from the Commission any notice pursuant to Rule 401(g)(2) under the Securities Act objecting to

the Company’s use of the automatic shelf registration form. The Company meets the requirements for use of Form S-3 under the

Securities Act specified in the Financial Industry Regulatory Authority Inc. (“FINRA”) Conduct Rule 5510(h)(1)(C).

The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the Time of Sale Prospectus and the

Prospectus, at the time they were or hereafter are filed with the Commission, or became effective under the Exchange Act, as the case

may be, complied and will comply in all material respects with the requirements of the Exchange Act.

-2-

(b)              Disclosure.

Each preliminary prospectus and the Prospectus when filed complied in all material respects with the Securities Act and, if filed by electronic

transmission pursuant to EDGAR, was identical (except as may be permitted by Regulation S-T under the Securities Act) to the copy

thereof delivered to the Underwriters for use in connection with the offer and sale of the Offered Shares. Each of the Registration Statement

and any post-effective amendment thereto, at the time it became or becomes effective and at all subsequent times, complied and will comply

in all material respects with the Securities Act and did not and will not contain any untrue statement of a material fact or omit to state

a material fact required to be stated therein or necessary to make the statements therein not misleading. As of the Applicable Time, the

Time of Sale Prospectus did not, and at the time of each sale of the Offered Shares and at the First Closing Date (as defined in Section 2),

the Time of Sale Prospectus, as then amended or supplemented by the Company, if applicable, will not, contain any untrue statement of

a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which

they were made, not misleading. The Prospectus, as of its date and (as then amended or supplemented) at all subsequent times, did not

and will not contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements

therein, in the light of the circumstances under which they were made, not misleading. The representations and warranties set forth in

the three immediately preceding sentences do not apply to statements in or omissions from the Registration Statement or any post-effective

amendment thereto, or the Prospectus or the Time of Sale Prospectus, or any amendments or supplements thereto, made in reliance upon and

in conformity with written information relating to any Underwriter furnished to the Company in writing by the Representatives expressly

for use therein, it being understood and agreed that the only such information consists of the information described in Section 9(b).

There are no contracts or other documents required to be described in the Time of Sale Prospectus or the Prospectus or to be filed as

an exhibit to the Registration Statement which have not been described or filed as required.

(c)              Free

Writing Prospectuses; Road Show. As of the determination date referenced in Rule 164(h) under the Securities Act, the Company

was not, is not or will not be (as applicable) an “ineligible issuer” in connection with the offering of the Offered Shares

pursuant to Rules 164, 405 and 433 under the Securities Act. Each free writing prospectus that the Company is required to file pursuant

to Rule 433(d) under the Securities Act has been, or will be, filed with the Commission in accordance with the requirements

of the Securities Act. Each free writing prospectus that the Company has filed, or is required to file, pursuant to Rule 433(d) under

the Securities Act or that was prepared by or on behalf of or used or referred to by the Company complies or will comply in all material

respects with the requirements of Rule 433 under the Securities Act, including timely filing with the Commission or retention and

legending, as applicable, and each such free writing prospectus, as of its issue date and at all subsequent times through the completion

of the public offer and sale of the Offered Shares did not, does not and will not include any information that conflicted, conflicts or

will conflict with the information contained in the Registration Statement, the Prospectus or any preliminary prospectus unless such information

has been superseded or modified as of such time. Except for the free writing prospectuses, if any, identified in Schedule B,

and electronic road shows, if any, furnished to you before first use, the Company has not prepared, used or referred to, and will not,

without your prior written consent, prepare, use or refer to, any free writing prospectus. Each Road Show, when considered together with

the Time of Sale Prospectus, did not, as of the Applicable Time, contain any untrue statement of a material fact or omit to state a material

fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(d)              Market

Capitalization. At the time the Registration Statement originally became effective, the Company met the then applicable requirements

for the use of Form S-3 under the Securities Act, including General Instruction I.B.1 of Form S-3. The Company satisfies the

pre-1992 eligibility requirements for the use of a registration statement on Form S-3 in connection with this offering (the pre-1992

eligibility requirements for the use of the registration statement on Form S-3 include (i) having a non-affiliate, public common

equity float of at least $150 million or a non-affiliate, public common equity float of at least $100 million and annual trading volume

of at least three million shares and (ii) having been subject to the Exchange Act reporting requirements for a period of 36 months).

The Company is not a shell company (as defined in Rule 405 under the Securities Act) and has not been a shell company for at least

12 calendar months previously and if it has been a shell company at any time previously, has filed current Form 10 information (as

defined in Instruction I.B.6 of Form S-3) with the Commission at least 12 calendar months previously reflecting its status as an

entity that is not a shell company.

-3-

(e)              Distribution

of Offering Material By the Company. Prior to the later of (i) the expiration or termination of the option granted to the several

Underwriters in ‎Section 2, and (ii) the completion of the Underwriters’ distribution of the Offered Shares, the Company

has not distributed and will not distribute any offering material in connection with the offering and sale of the Offered Shares other

than the Registration Statement, the Time of Sale Prospectus, the Prospectus or any free writing prospectus reviewed and consented to

by the Representatives, and the free writing prospectuses, if any, identified on Schedule B hereto.

(f)               Financial

Information. The consolidated financial statements of the Company included or incorporated by reference in the Registration Statement,

the Time of Sale Prospectus and the Prospectus, if any, together with the related notes and schedules, present fairly, in all material

respects, the consolidated financial position of the Company and the Subsidiaries (as defined below) as of the dates indicated and the

consolidated results of operations, cash flows and changes in stockholders’ equity of the Company for the periods specified and

have been prepared in compliance with the requirements of the Securities Act and Exchange Act and in conformity with GAAP (as defined

below) applied on a consistent basis during the periods involved; there are no financial statements (historical or pro forma) that are

required to be included or incorporated by reference in the Registration Statement, the Time of Sale Prospectus and the Prospectus that

are not included or incorporated by reference as required; the Company and the Subsidiaries (as defined below) do not have any material

liabilities or obligations, direct or contingent (including any off-balance sheet obligations), not described in the Registration Statement

(excluding the exhibits thereto), the Time of Sale Prospectus and the Prospectus; and all disclosures contained or incorporated by reference

in the Registration Statement, the Time of Sale Prospectus and the Prospectus and the Issuer Free Writing Prospectuses, if any, regarding

“non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply with Regulation

G of the Exchange Act and Item 10 of Regulation S-K under the Securities Act, to the extent applicable. The financial data set forth in

each of the Registration Statement, the Time of Sale Prospectus and the Prospectus under the captions “Prospectus Supplement Summary—Summary

Selected Financial Data,” “Selected Financial Data” and “Capitalization” fairly present the information

set forth therein on a basis consistent with that of the audited financial statements contained in the Registration Statement, the Time

of Sale Prospectus and the Prospectus. The interactive data in eXtensible Business Reporting Language included or incorporated by reference

in the Registration Statement and the Prospectus fairly presents the information called for in all material respects and has been prepared

in accordance with the Commission’s rules and guidelines applicable thereto.

(g)              Conformity

with EDGAR Filing. The Preliminary Prospectus and Final Prospectus delivered to the Underwriter for use in connection with the sale

of the Offered Shares pursuant to this Agreement will be identical to the versions of the Preliminary Prospectus and Final Prospectus

created to be transmitted to the Commission for filing via EDGAR, except to the extent permitted by Regulation S-T.

(h)              Organization.

The Company and each of its subsidiaries (as defined in Rule 405 under the Securities Act) (“Subsidiaries”) are

duly organized, validly existing as a corporation and in good standing under the Laws of their respective jurisdictions of organization.

The Company and each of its Subsidiaries are duly licensed or qualified as a foreign corporation for transaction of business and in good

standing under the Laws of each other jurisdiction in which their respective ownership or lease of property or the conduct of their respective

businesses requires such license or qualification, and have all corporate power and authority necessary to own or hold their respective

properties and to conduct their respective businesses as described in the Registration Statement, the Time of Sale Prospectus and the

Prospectus, except where the failure to be so qualified or in good standing or have such power or authority would not, individually or

in the aggregate, have a material adverse effect or would reasonably be expected to have a material adverse effect on or affecting the

assets, business, operations, earnings, properties, condition (financial or otherwise), prospects, stockholders’ equity or results

of operations of the Company and the Subsidiaries taken as a whole, or prevent or materially interfere with the consummation of the transactions

contemplated hereby (a “Material Adverse Effect”).

-4-

(i)               Subsidiaries.

Except as set forth in the Registration Statement, the Time of Sale Prospectus and the Prospectus, the Company owns, directly or indirectly,

all of the equity interests of the Subsidiaries free and clear of any lien, charge, security interest, encumbrance, right of first refusal

or other restriction, and all the equity interests of the Subsidiaries are validly issued and are fully paid, nonassessable and free of

preemptive and similar rights. No Subsidiary is currently prohibited, directly or indirectly, from paying any dividends to the Company,

from making any other distribution on such Subsidiary’s capital stock, from repaying to the Company any loans or advances to such

Subsidiary from the Company or from transferring any of such Subsidiary’s property or assets to the Company or any other Subsidiary

of the Company.

(j)               No

Violation or Default. Neither the Company nor any of its Subsidiaries is (i) in violation of its charter or by-laws or similar

organizational documents; (ii) in default, and no event has occurred that, with notice or lapse of time or both, would constitute

such a default, in the due performance or observance of any term, covenant or condition contained in any indenture, mortgage, deed of

trust, loan agreement or other agreement or instrument to which the Company or any of its Subsidiaries is a party or by which the Company

or any of its Subsidiaries is bound or to which any of the property or assets of the Company or any of its Subsidiaries are subject; or

(iii) in violation of any Law of any Governmental Authority, except, in the case of each of clauses (ii) and (iii) above,

for any such violation or default that would not, individually or in the aggregate, have a Material Adverse Effect. To the Company’s

knowledge, no other party under any material contract or other agreement to which it or any of its Subsidiaries is a party is in default

in any respect thereunder where such default would have a Material Adverse Effect.

(k)              No

Material Adverse Effect. Subsequent to the respective dates as of which information is given in the Registration Statement, the Time

of Sale Prospectus, the Prospectus and the Free Writing Prospectuses, if any (including any document deemed incorporated by reference

therein), there has not been (i) any Material Adverse Effect or the occurrence of any development that the Company reasonably expects

will result in a Material Adverse Effect, (ii) any transaction which is material to the Company and the Subsidiaries taken as a whole,

(iii) any obligation or liability, direct or contingent (including any off-balance sheet obligations), incurred by the Company or

any Subsidiary, which is material to the Company and the Subsidiaries taken as a whole, (iv) any material change in the capital stock

or outstanding long-term indebtedness of the Company or any of its Subsidiaries or (v) any dividend or distribution of any kind declared,

paid or made on the capital stock of the Company or any Subsidiary, other than in each case above in the ordinary course of business or

as otherwise disclosed in the Registration Statement or Prospectus (including any document deemed incorporated by reference therein).

(l)               Capitalization.

The issued and outstanding shares of capital stock of the Company have been validly issued, are fully paid and nonassessable and, other

than as disclosed in the Registration Statement, the Time of Sale Prospectus or the Prospectus, are not subject to any preemptive rights,

rights of first refusal or similar rights. The Company has an authorized, issued and outstanding capitalization as set forth in the Registration

Statement and the Prospectus as of the dates referred to therein (other than the grant of additional options under the Company’s

existing stock option plans, or changes in the number of outstanding shares of common stock of the Company due to the issuance of shares

upon the exercise or conversion of securities exercisable for, or convertible into, shares of common stock outstanding on the date hereof)

and such authorized capital stock conforms to the description thereof set forth in the Registration Statement, the Time of Sale Prospectus

and the Prospectus. The description of the securities of the Company in the Registration Statement, the Time of Sale Prospectus and the

Prospectus is complete and accurate in all material respects. Except as disclosed in or contemplated by the Registration Statement, the

Time of Sale Prospectus or the Prospectus, as of the date referred to therein, the Company does not have outstanding any options to purchase,

or any rights or warrants to subscribe for, or any securities or obligations convertible into, or exchangeable for, or any contracts or

commitments to issue or sell, any shares of capital stock or other securities.

(m)             Authorization;

Enforceability. The Company has full legal right, power and authority to enter into this Agreement and perform the transactions contemplated

hereby. This Agreement has been duly authorized, executed and delivered by the Company and is a legal, valid and binding agreement of

the Company enforceable in accordance with its terms, except to the extent that enforceability may be limited by bankruptcy, insolvency,

reorganization, moratorium or similar Laws affecting creditors’ rights generally and by general equitable principles.

-5-

(n)             Authorization

of the Offered Shares. The Offered Shares have been duly authorized for issuance and sale pursuant to this Agreement and, when issued

and delivered by the Company against payment therefor pursuant to this Agreement, will be duly and validly issued, fully paid and nonassessable,

free and clear of any pledge, lien, encumbrance, security interest or other claim, including any statutory or contractual preemptive

rights, resale rights, rights of first refusal or other similar rights, and will be registered pursuant to Section 12 of the Exchange

Act. The Offered Shares, when issued, will conform to the description thereof set forth in or incorporated into the Registration Statement,

the Time of Sale Prospectus and the Prospectus.

(o)              No

Consents Required. No consent, approval, authorization, order, registration or qualification of or with any Governmental Authority

is required for the execution, delivery and performance by the Company of this Agreement, the issuance and sale by the Company of the

Offered Shares, except for such consents, approvals, authorizations, orders and registrations or qualifications as may be required under

applicable state securities Laws or Laws of FINRA or Nasdaq in connection with the sale of the Offered Shares.

(p)              No

Preferential Rights. Except as set forth in the Registration Statement, the Time of Sale Prospectus and the Prospectus, (i) no

person, as such term is defined in Rule 1-02 of Regulation S-X promulgated under the Securities Act (each, a “Person”),

has the right, contractual or otherwise, to cause the Company to issue or sell to such Person any shares of common stock or any other

capital stock or other securities of the Company, (ii) no Person has any preemptive rights, resale rights, rights of first refusal,

rights of co-sale, or any other rights (whether pursuant to a “poison pill” provision or otherwise) to purchase any shares

of common stock or of any other capital stock or other securities of the Company, (iii)  no Person has the right to act as an underwriter

or as a financial advisor to the Company in connection with the offer and sale of the Shares, and (iv) no Person has the right,

contractual or otherwise, to require the Company to register under the Securities Act any shares of common stock or any other capital

stock or other securities of the Company, or to include any such shares or other securities in the Registration Statement or the offering

contemplated thereby, whether as a result of the filing or effectiveness of the Registration Statement or the sale of the Offered Shares

as contemplated thereby or otherwise.

(q)              Independent

Public Accounting Firm. PricewaterhouseCoopers LLP (the “Accountant”), whose report on the consolidated financial

statements of the Company is filed with the Commission as part of the Company’s most recent Annual Report on Form 10-K filed

with the Commission and incorporated by reference into the Registration Statement and the Prospectus, are and, during the periods covered

by their report, were an independent registered public accounting firm within the meaning of the Securities Act and the Public Company

Accounting Oversight Board (United States). To the Company’s knowledge, the Accountant is not in violation of the auditor independence

requirements of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”) with respect to the Company.

(r)               Enforceability

of Agreements. All agreements between the Company and third parties expressly referenced in the Prospectus are legal, valid and binding

obligations of the Company enforceable in accordance with their respective terms, except to the extent that (i) enforceability may

be limited by bankruptcy, insolvency, reorganization, moratorium or similar Laws affecting creditors’ rights generally and by general

equitable principles and (ii) the indemnification provisions of certain agreements may be limited by federal or state securities

Laws or public policy considerations in respect thereof.

(s)              No

Litigation. Except as set forth in the Registration Statement, the Time of Sale Prospectus or the Prospectus, there are no actions,

suits or proceedings by or before any Governmental Authority pending, nor, to the Company’s knowledge, any audits or investigations

by or before any Governmental Authority, to which the Company or a Subsidiary is a party or to which any property of the Company or any

of its Subsidiaries is the subject that, individually or in the aggregate, would have a Material Adverse Effect and, to the Company’s

knowledge, no such actions, suits, proceedings, audits or investigations are threatened or contemplated by any Governmental Authority

or threatened by others; and (i) there are no current or pending audits, investigations, actions, suits or proceedings by or before

any Governmental Authority that are required under the Securities Act to be described in the Time of Sale Prospectus or Prospectus that

are not so described; and (ii) there are no contracts or other documents that are required under the Securities Act to be filed

as exhibits to the Registration Statement that are not so filed.

-6-

(t)               Consents

and Permits. Except as disclosed in the Registration Statement, the Time of Sale Prospectus and the Prospectus, the Company and its

Subsidiaries have made all filings, applications and submissions required by, possesses and is operating in compliance with, all approvals,

licenses, certificates, certifications, clearances, consents, grants, exemptions, marks, notifications, orders, permits and other authorizations

issued by, the appropriate federal, state or foreign Governmental Authority (including the United States Food and Drug Administration

(the “FDA”), the United States Drug Enforcement Administration or any other foreign, federal, state, provincial or

local Government Authorities engaged in the regulation of clinical trials, pharmaceuticals, biologics or biohazardous substances or materials)

necessary for the ownership or lease of their respective properties or to conduct its businesses as described in the Registration Statement,

the Time of Sale Prospectus and the Prospectus (collectively, “Permits”), except for such Permits the failure of which

to possess, obtain or make the same would not have a Material Adverse Effect; the Company and its Subsidiaries are in compliance with

the terms and conditions of all such Permits, except where the failure to be in compliance would not have a Material Adverse Effect; all

of the Permits are valid and in full force and effect, except where any invalidity, individually or in the aggregate, would not be reasonably

expected to have a Material Adverse Effect; and neither the Company nor any of its Subsidiaries has received any written notice relating

to the limitation, revocation, cancellation, suspension, modification or non-renewal of any such Permit which, singly or in the aggregate,

if the subject of an unfavorable decision, ruling or finding, would have a Material Adverse Effect, or has any reason to believe that

any such license, certificate, permit or authorization will not be renewed in the ordinary course. To the extent required by applicable

Laws of the FDA, the Company or the applicable Subsidiary has submitted to the FDA an Investigational New Drug Application or amendment

or supplement thereto for each clinical trial it has conducted or sponsored or is conducting or sponsoring; all such submissions were

in material compliance with applicable Laws when submitted and no material deficiencies have been asserted by the FDA with respect to

any such submissions.

(u)              Regulatory

Filings. Except as disclosed in the Registration Statement, the Time of Sale Prospectus and the Prospectus, neither the Company nor

any of its Subsidiaries has failed to file with the applicable Governmental Authority (including the FDA, or any foreign, federal, state,

provincial or local Governmental Authority performing functions similar to those performed by the FDA) any required filing, declaration,

listing, registration, report or submission, except for such failures that, individually or in the aggregate, would not have a Material

Adverse Effect; except as disclosed in the Registration Statement, the Time of Sale Prospectus and the Prospectus, all such filings, declarations,

listings, registrations, reports or submissions were in compliance with applicable Laws when filed and no deficiencies have been asserted

by any applicable regulatory authority with respect to any such filings, declarations, listings, registrations, reports or submissions,

except for any deficiencies that, individually or in the aggregate, would not have a Material Adverse Effect. The Company has operated

and currently is, in all material respects, in compliance with the United States Federal Food, Drug, and Cosmetic Act, all applicable

rules and regulations of the FDA and other federal, state, local and foreign Governmental Authority exercising comparable authority.

(v)              Intellectual

Property. Except as disclosed in the Registration Statement, the Time of Sale Prospectus and the Prospectus, the Company and its Subsidiaries

own, possess, license or have other rights to use all foreign and domestic patents, patent applications, trade and service marks, trade

and service mark registrations, trade names, copyrights, licenses, inventions, trade secrets, technology, Internet domain names,

know-how and other intellectual property (collectively, the “Intellectual Property”), necessary for the conduct of

their respective businesses as now conducted except to the extent that the failure to own, possess, license or otherwise hold adequate

rights to use such Intellectual Property would not, individually or in the aggregate, have a Material Adverse Effect. Except as disclosed

in the Registration Statement, the Time of Sale Prospectus and the Prospectus (i) there are no rights of third parties to any such

Intellectual Property owned by the Company and its Subsidiaries; (ii) to the Company’s knowledge, there is no infringement

by third parties of any such Intellectual Property; (iii) there is no pending or, to the Company’s knowledge, threatened action,

suit, proceeding or claim by others challenging the Company’s and its Subsidiaries’ rights in or to any such Intellectual

Property, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim;

(iv) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging

the validity or scope of any such Intellectual Property; (v) there is no pending or, to the Company’s knowledge, threatened

action, suit, proceeding or claim by others that the Company and its Subsidiaries infringe or otherwise violate any patent, trademark,

copyright, trade secret or other proprietary rights of others; (vi) to the Company’s knowledge, there is no third-party U.S.

patent or published U.S. patent application which contains claims for which an Interference Proceeding (as defined in 35 U.S.C. §

135) has been commenced against any patent or patent application described in the Registration Statement, the Time of Sale Prospectus

and the Prospectus as being owned by or licensed to the Company; and (vii) the Company and its Subsidiaries have complied with the

terms of each agreement pursuant to which Intellectual Property has been licensed to the Company or such Subsidiary, and all such agreements

are in full force and effect, except, in the case of any of clauses (i)-(vii) above, for any such infringement by third parties or

any such pending or threatened suit, action, proceeding or claim as would not, individually or in the aggregate, result in a Material

Adverse Effect.

-7-

(w)             Clinical

Studies. The preclinical studies and tests and clinical trials described in the Registration Statement, the Time of Sale Prospectus

and the Prospectus were, and, if still pending, are being conducted in all material respects in accordance with the experimental protocols,

procedures and controls pursuant to, where applicable, accepted professional and scientific standards for products or product candidates

comparable to those being developed by the Company; the descriptions of such studies, tests and trials, and the results thereof, contained

in the Registration Statement, the Time of Sale Prospectus and the Prospectus are accurate and complete in all material respects; the

Company is not aware of any tests, studies or trials not described in the Registration Statement, the Time of Sale Prospectus and the

Prospectus, the results of which reasonably call into question the results of the tests, studies and trials described in the Registration

Statement, the Time of Sale Prospectus and the Prospectus; and the Company has not received any written notice or correspondence from

the FDA or any foreign, state or local Governmental Authority exercising comparable authority or any institutional review board or comparable

authority requiring the termination, suspension, clinical hold or material modification of any tests, studies or trials.

(x)              No

Material Defaults. Neither the Company nor any of the Subsidiaries has defaulted on any installment on indebtedness for borrowed money

or on any rental on one or more long-term leases, which defaults, individually or in the aggregate, would have a Material Adverse Effect.

The Company has not filed a report pursuant to Section 13(a) or 15(d) of the Exchange Act since the filing of its last

Annual Report on Form 10-K, indicating that it (i) has failed to pay any dividend or sinking fund installment on preferred

stock or (ii) has defaulted on any installment on indebtedness for borrowed money or on any rental on one or more long-term leases,

which defaults, individually or in the aggregate, would have a Material Adverse Effect.

(y)              Certain

Market Activities. Neither the Company nor any of its subsidiaries has taken, directly or indirectly, any action designed to or that

might cause or result in stabilization or manipulation of the price of the Shares or of any “reference security” (as defined

in Rule 100 of Regulation M under the Exchange Act (“Regulation M”)) with respect to the Shares, whether to facilitate

the sale or resale of the Offered Shares or otherwise, and has taken no action which would directly or indirectly violate Regulation M.

(z)              Broker/Dealer

Relationships. Neither the Company nor any of the Subsidiaries (i) is required to register as a “broker” or “dealer”

in accordance with the provisions of the Exchange Act or (ii) directly or indirectly through one or more intermediaries, controls

or is a “person associated with a member” or “associated person of a member” (within the meaning set forth in

the FINRA Manual).

(aa)            No

Reliance. The Company has not relied upon the Underwriter or legal counsel for the Underwriter for any legal, tax or accounting advice

in connection with the offering and sale of the Offered Shares.

(bb)           Taxes.

The Company and each of its Subsidiaries have filed all federal, state, local and foreign tax returns which have been required to be filed

and paid all taxes shown thereon through the date hereof, to the extent that such taxes have become due and are not being contested in

good faith, except where the failure to so file or pay would not have a Material Adverse Effect. Except as otherwise disclosed in or contemplated

by the Registration Statement, the Time of Sale Prospectus or the Prospectus, no tax deficiency has been determined adversely to the Company

or any of its Subsidiaries which has had, or would have, individually or in the aggregate, a Material Adverse Effect. The Company has

no knowledge of any federal, state or other governmental tax deficiency, penalty or assessment which has been or might be asserted or

threatened against it which would have a Material Adverse Effect.

-8-

(cc)            Title

to Real and Personal Property. Except as set forth in the Registration Statement, the Time of Sale Prospectus or the Prospectus, the

Company and its Subsidiaries have good and marketable title in fee simple to all items of real property owned by them, good and valid

title to all personal property described in the Registration Statement, the Time of Sale Prospectus or the Prospectus as being owned by

them that are material to the businesses of the Company or such Subsidiary, in each case free and clear of all liens, encumbrances and

claims, except those matters that (i) do not materially interfere with the use made and proposed to be made of such property by the

Company and any of its Subsidiaries or (ii) would not, individually or in the aggregate, have a Material Adverse Effect. Any real

or personal property described in the Registration Statement, the Time of Sale Prospectus or the Prospectus as being leased by the Company

and any of its Subsidiaries is held by them under valid, existing and enforceable leases, except those that (A) do not materially

interfere with the use made or proposed to be made of such property by the Company or any of its Subsidiaries or (B) would not be

reasonably expected, individually or in the aggregate, to have a Material Adverse Effect. Each of the properties of the Company and its

Subsidiaries complies with all applicable Laws (including building and zoning Laws and Laws relating to access to such properties), except

if and to the extent disclosed in the Registration Statement, the Time of Sale Prospectus or the Prospectus or except for such failures

to comply that would not, individually or in the aggregate, reasonably be expected to interfere in any material respect with the use made

and proposed to be made of such property by the Company and its Subsidiaries or otherwise have a Material Adverse Effect. None of the

Company or its subsidiaries has received from any Governmental Authorities any notice of any condemnation of, or zoning change affecting,

the properties of the Company and its Subsidiaries, and the Company knows of no such condemnation or zoning change which is threatened,

except for such that would not reasonably be expected to interfere in any material respect with the use made and proposed to be made of

such property by the Company and its Subsidiaries or otherwise have a Material Adverse Effect, individually or in the aggregate.

(dd)           Environmental

Laws. Except as set forth in the Registration Statement, the Time of Sale Prospectus or the Prospectus, the Company and its Subsidiaries

(i) are in compliance with any and all applicable federal, state, local and foreign Laws relating to the protection of human health

and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants (collectively, “Environmental

Laws”); (ii) have received and are in compliance with all permits, licenses or other approvals required of them under

applicable Environmental Laws to conduct their respective businesses as described in the Registration Statement, the Time of Sale Prospectus

or the Prospectus; and (iii) have not received notice of any actual or potential liability for the investigation or remediation

of any disposal or release of hazardous or toxic substances or wastes, pollutants or contaminants, except, in the case of any of clauses

(i), (ii) or (iii) above, for any such failure to comply or failure to receive required permits, licenses, other approvals or

liability as would not, individually or in the aggregate, have a Material Adverse Effect.

(ee)            Disclosure

Controls. The Company and each of its Subsidiaries maintain systems of internal accounting controls sufficient to provide reasonable

assurance that (i) transactions are executed in accordance with management’s general or specific authorizations; (ii) transactions

are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and

to maintain asset accountability; (iii) access to assets is permitted only in accordance with management’s general or specific

authorization; and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and

appropriate action is taken with respect to any differences. The Company’s internal control over financial reporting is effective

and the Company is not aware of any material weaknesses in its internal control over financial reporting (other than as set forth in the

Registration Statement, Time of Sale Prospectus or Prospectus). Since the date of the latest audited financial statements of the Company

included in the Prospectus, there has been no change in the Company’s internal control over financial reporting that has materially

affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting (other than as set

forth in the Registration Statement, Time of Sale Prospectus or Prospectus). The Company has established disclosure controls and procedures

(as defined in Exchange Act Rules 13a-15 and 15d-15) for the Company and designed such disclosure controls and procedures to ensure

that material information relating to the Company and each of its Subsidiaries is made known to the certifying officers by others within

those entities, particularly during the period in which the Company’s Annual Report on Form 10-K or Quarterly Report on Form 10-Q,

as the case may be, is being prepared. The Company’s certifying officers have evaluated the effectiveness of the Company’s

disclosure controls and procedures as of a date within 90 days prior to the filing date of the Form 10-K for the fiscal year most

recently ended (such date, the “Evaluation Date”). The Company presented in its Form 10-K for the fiscal

year most recently ended the conclusions of the certifying officers about the effectiveness of the disclosure controls and procedures

based on their evaluations as of the Evaluation Date and the disclosure controls and procedures are effective. Since the Evaluation Date,

there have been no significant changes in the Company’s internal controls (as such term is defined in Item 307(b) of Regulation

S-K under the Securities Act) or, to the Company’s knowledge, in other factors that could significantly affect the Company’s

internal controls.

-9-

(ff)             Sarbanes-Oxley.

There is, and has been, no failure on the part of the Company or any of the Company’s directors or officers, in their capacities

as such, to comply in all material respects with any applicable provision of the Sarbanes-Oxley Act and the rules and regulations

promulgated thereunder. Each of the principal executive officer and the principal financial officer of the Company (or each former principal

executive officer of the Company and each former principal financial officer of the Company as applicable) has made all certifications

required by Sections 302 and 906 of the Sarbanes-Oxley Act with respect to all reports, schedules, forms, statements and other documents

required to be filed by it or furnished by it to the Commission. For purposes of the preceding sentence, “principal executive officer”

and “principal financial officer” shall have the meanings given to such terms in the Sarbanes-Oxley Act.

(gg)           Brokers.

Neither the Company nor any of the Subsidiaries has incurred any liability for any finder’s fees, brokerage commissions or similar

payments in connection with the transactions herein contemplated, except as may otherwise exist with respect to or pursuant to this Agreement.

(hh)           Labor

Disputes. No labor disturbance by or dispute with employees of the Company or any of its Subsidiaries exists or, to the knowledge

of the Company, is threatened which would result in a Material Adverse Effect.

(ii)              Investment

Company Act. Neither the Company nor any of the Subsidiaries is, or will be, either after receipt of payment for the Offered Shares

or after the application of the proceeds therefrom as described under “Use of Proceeds” in the Registration Statement, the

Time of Sale Prospectus or the Prospectus, required to register as an “investment company” or an entity “controlled”

by an “investment company,” as such terms are defined in the Investment Company Act of 1940 (the “Investment

Company Act”).

(jj)              Money

Laundering Laws. The operations of the Company and its subsidiaries are, and have been conducted at all times, in compliance with

applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended,

the money laundering statutes of all applicable jurisdictions, the rules and regulations thereunder and any related or similar applicable

rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering

Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator

involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the best knowledge of the

Company, threatened.

(kk)            Off-Balance

Sheet Arrangements. There are no transactions, arrangements and other relationships between and/or among the Company, and/or any of

its affiliates and any unconsolidated entity, including any structural finance, special purpose or limited purpose entity (each, an “Off-Balance

Sheet Transaction”) that could reasonably be expected to affect materially the Company’s liquidity or the availability

of or requirements for its capital resources, including those Off-Balance Sheet Transactions described in the Commission’s Statement

about Management’s Discussion and Analysis of Financial Conditions and Results of Operations (Release Nos. 33-8056; 34-45321; FR-61),

required to be described in the Prospectus which have not been described as required.

(ll)              ERISA.

To the knowledge of the Company, each material employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement

Income Security Act of 1974 (“ERISA”), that is maintained, administered or contributed to by the Company or any of

its affiliates for employees or former employees of the Company and any of its Subsidiaries has been maintained in material compliance

with its terms and the requirements of any applicable statutes, orders, rules and regulations, including ERISA and the Internal Revenue

Code of 1986 (the “Code”); no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975

of the Code, has occurred which would result in a material liability to the Company with respect to any such plan excluding transactions

effected pursuant to a statutory or administrative exemption; and for each such plan that is subject to the funding rules of Section 412

of the Code or Section 302 of ERISA, no “accumulated funding deficiency” as defined in Section 412 of the Code has

been incurred, whether or not waived, and the fair market value of the assets of each such plan (excluding for these purposes accrued

but unpaid contributions) exceeds the present value of all benefits accrued under such plan determined using reasonable actuarial assumptions.

-10-

(mm)          Forward-Looking

Statements. Each financial or operational projection or other “forward-looking statement” (as defined by Section 27A

of the Securities Act or Section 21E of the Exchange Act) contained in the Registration Statement, the Time of Sale Prospectus or

the Prospectus (i) was so included by the Company in good faith and with reasonable basis after due consideration by the Company

of the underlying assumptions, estimates and other applicable facts and circumstances and (ii) is accompanied by meaningful cautionary

statements identifying those factors that could cause actual results to differ materially from those in such forward-looking statement.

No such statement was made with the knowledge of an executive officer or director of the Company that is was false or misleading.

(nn)           Margin

Rules. Neither the issuance, sale and delivery of the Offered Shares nor the application of the proceeds thereof by the Company as

described in the Registration Statement and the Prospectus will violate Regulation T, U or X of the Board of Governors of the Federal

Reserve System or any other regulation of such Board of Governors.

(oo)           Insurance.

The Company and each of its Subsidiaries carry, or are covered by, insurance in such amounts and covering such risks as the Company and

each of its Subsidiaries reasonably believe are adequate for the conduct of their properties and as is customary for companies engaged

in similar businesses in similar industries.

(pp)           Anti-Corruption

and Anti-Bribery Law. Neither the Company nor any of its subsidiaries nor any director, officer, or employee of the Company or any

of its subsidiaries, nor to the knowledge of the Company, any agent, affiliate or other person acting on behalf of the Company or any

of its subsidiaries has, in the course of its actions for, or on behalf of, the Company or any of its subsidiaries (i) used any corporate

funds for any unlawful contribution, gift, entertainment or other unlawful expenses relating to political activity; (ii) made or

taken any act in furtherance of an offer, promise, or authorization of any direct or indirect unlawful payment or benefit to any foreign

or domestic government official or employee, including of any government-owned or controlled entity or public international organization,

or any political party, party official, or candidate for political office; (iii) violated or is in violation of any provision of

the U.S. Foreign Corrupt Practices Act of 1977, as amended (the “FCPA”), the UK Bribery Act 2010, or any other applicable

anti-bribery or anti-corruption law; or (iv) made, offered, authorized, requested, or taken an act in furtherance of any unlawful

bribe, rebate, payoff, influence payment, kickback or other unlawful payment or benefit. The Company and its subsidiaries and, to the

knowledge of the Company, the Company’s affiliates have conducted their respective businesses in compliance with the FCPA and have

instituted and maintain policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued

compliance therewith.

(qq)           No

Conflicts. Neither the execution of this Agreement, nor the issuance, offering or sale of the Offered Shares, nor the consummation

of any of the transactions contemplated herein and therein, nor the compliance by the Company with the terms and provisions hereof and

thereof will conflict with, or will result in a breach of, any of the terms and provisions of, or has constituted or will constitute a

default under, or has resulted in or will result in the creation or imposition of any lien, charge or encumbrance upon any property or

assets of the Company pursuant to the terms of any contract or other agreement to which the Company may be bound or to which any of the

property or assets of the Company is subject, except (i) such conflicts, breaches or defaults as may have been waived and (ii) such

conflicts, breaches and defaults that would not have a Material Adverse Effect; nor will such action result (x) in any violation

of the provisions of the organizational or governing documents of the Company, or (y) in any material violation of the provisions

of any statute or any order, rule or regulation applicable to the Company or of any Governmental Authority having jurisdiction over

the Company.

-11-

(rr)             Sanctions.

Neither the Company nor any of its subsidiaries, directors, officers, or employees, nor, to the knowledge of the Company, after due inquiry,

any agent, affiliate or other person acting on behalf of the Company or any of its subsidiaries is currently the subject or the target

of any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Department of the Treasury (“OFAC”)

or the U.S. Department of State, the United Nations Security Council, the European Union, His Majesty’s Treasury of the United Kingdom,

or other relevant sanctions authority (collectively, “Sanctions”); nor is the Company or any of its subsidiaries located,

organized or resident in a country or territory that is the subject or the target of Sanctions, including, without limitation, Crimea,

the so-called Donetsk People’s Republic and the so-called Luhansk People’s Republic regions of Ukraine, Cuba, Iran, North

Korea, and Syria (before July 1, 2025); and the Company will not directly or indirectly use the proceeds of this offering, or lend,

contribute or otherwise make available such proceeds to any subsidiary, or any joint venture partner or other person or entity, for the

purpose of financing the activities of or business with any person, or in any country or territory, that at the time of such financing,

is the subject or the target of Sanctions or in any other manner that will result in a violation by any person (including any person participating

in the transaction whether as underwriter, advisor, investor or otherwise) of applicable Sanctions. For the past five years, the Company

and its subsidiaries have not knowingly engaged in and are not now knowingly engaged in any dealings or transactions with any person that

at the time of the dealing or transaction is or was the subject or the target of Sanctions or with any Sanctioned Country.

(ss)            Compliance

with Laws. Each of the Company and its Subsidiaries: (A) is and at all times has been in compliance with all statutes, rules,

or regulations applicable to the ownership, testing, development, manufacture, packaging, processing, use, distribution, marketing, labeling,

promotion, sale, offer for sale, storage, import, export or disposal of any product manufactured or distributed by the Company or its

Subsidiaries (“Applicable Laws”), except as could not, individually or in the aggregate, reasonably be expected to

result in a Material Adverse Effect; (B) has not received any FDA Form 483, notice of adverse finding, warning letter, untitled

letter or other correspondence or notice from the FDA or any other Governmental Authority alleging or asserting noncompliance with any

Applicable Laws or any licenses, certificates, approvals, clearances, authorizations, permits and supplements or amendments thereto required

by any such Applicable Laws (“Authorizations”); (C) possesses all material Authorizations and such Authorizations

are valid and in full force and effect and are not in material violation of any term of any such Authorizations; (D) has not received

notice of any claim, action, suit, proceeding, hearing, enforcement, investigation, arbitration or other action from any Governmental

Authority or third party alleging that any product operation or activity is in violation of any Applicable Laws or Authorizations and

has no knowledge that any such Governmental Authority or third party is considering any such claim, litigation, arbitration, action, suit,

investigation or proceeding; (E) has not received notice that any Governmental Authority has taken, is taking or intends to take

action to limit, suspend, modify or revoke any Authorizations and has no knowledge that any such Governmental Authority is considering

such action; (F) has filed, obtained, maintained or submitted all material reports, documents, forms, notices, applications, records,

claims, submissions and supplements or amendments as required by any Applicable Laws or Authorizations and that all such reports, documents,

forms, notices, applications, records, claims, submissions and supplements or amendments were complete and correct on the date filed (or

were corrected or supplemented by a subsequent submission); and (G) has not, either voluntarily or involuntarily, initiated, conducted,

or issued or caused to be initiated, conducted or issued, any recall, market withdrawal or replacement, safety alert, post sale warning,

“dear healthcare provider” letter, or other notice or action relating to the alleged lack of safety or efficacy of any product

or any alleged product defect or violation and, to the Company’s knowledge, no third party has initiated, conducted or intends to

initiate any such notice or action.

(tt)             Statistical

and Market-Related Data. All statistical, demographic and market-related data included in the Registration Statement, the Time of

Sale Prospectus or the Prospectus are based on or derived from sources that the Company believes to be reliable and accurate or represent

the Company’s good faith estimates that are made on the basis of data derived from such sources.

(uu)           Stock

Exchange Listing. The Shares are registered pursuant to Section 12(b) or 12(g) of the Exchange Act and are listed on

The Nasdaq Capital Market (the “Nasdaq”), and the Company has taken no action designed to, or likely to have the effect

of, terminating the registration of the Shares under the Exchange Act or delisting the Shares from the Nasdaq, nor has the Company received

any notification that the Commission or the Nasdaq is contemplating terminating such registration or listing. To the Company’s knowledge,

it is in compliance with all applicable listing requirements of Nasdaq.

(vv)           Related-Party

Transactions. There are no business relationships or related-party transactions involving the Company or any of its subsidiaries

or any other person required to be described in the Registration Statement, the Time of Sale Prospectus or the Prospectus that have not

been described as required.

-12-

(ww)         FINRA

Matters. All of the information provided to the Underwriters or to counsel for the Underwriters by the Company, its counsel, its officers

and directors and the holders of any securities (debt or equity) or options to acquire any securities of the Company in connection with

the offering of the Offered Shares is true, complete, correct and compliant with FINRA’s rules and any letters, filings or

other supplemental information provided to FINRA pursuant to FINRA Rules is true, complete and correct.

(xx)            Parties

to Lock-Up Agreements. The Company has furnished to the Underwriters a letter agreement in the form attached hereto

as Exhibit A (the “Lock-up Agreement”) from each of the persons listed

on Exhibit B. Such Exhibit B lists under an appropriate caption the directors and executive

officers of the Company. If any additional persons shall become directors or executive officers of the Company prior to the end of

the Company Lock-up Period (as defined below), the Company shall cause each such person, prior to or contemporaneously with their

appointment or election as a director or executive officer of the Company, to execute and deliver to the Representatives a Lock-up

Agreement.

(yy)           Cybersecurity.

The Company and its subsidiaries’ information technology assets and equipment, computers, systems, networks, hardware, software,

websites, applications, and databases (collectively, “IT Systems”) are adequate for, and operate and perform in all

material respects as required in connection with the operation of the business of the Company and its subsidiaries as currently conducted,

free and clear of all material bugs, errors, defects, Trojan horses, time bombs, malware and other corruptants. The Company and its subsidiaries

have implemented and maintained commercially reasonable physical, technical and administrative controls, policies, procedures, and safeguards

to maintain and protect their material confidential information and the integrity, continuous operation, redundancy and security of all

IT Systems and data, including all “Personal Data” (defined below) and all sensitive, confidential or regulated data

(“Confidential Data”) used in connection with their businesses. “Personal Data” means (i) a

natural person’s name, street address, telephone number, e-mail address, photograph, social security number or tax identification

number, driver’s license number, passport number, credit card number, bank information, or customer or account number; (ii) any

information which would qualify as “personally identifying information” under the Federal Trade Commission Act, as amended;

(iii) “personal data” as defined by GDPR (as defined below); (iv) any information which would qualify as “protected

health information” under the Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information

Technology for Economic and Clinical Health Act (collectively, “HIPAA”); (v) any “personal information”

as defined by the California Consumer Privacy Act (“CCPA”); and (vi) any other piece of information that allows

the identification of such natural person, or his or her family, or permits the collection or analysis of any data related to an identified

person’s health or sexual orientation. There have been no breaches, violations, outages or unauthorized uses of or accesses to same,

except for those that have been remedied without material cost or liability or the duty to notify any other person, nor any incidents

under internal review or investigations relating to the same that, in each case, would reasonably be likely to result in a Material Adverse

Effect. The Company and its subsidiaries are presently in material compliance with all applicable laws or statutes and all judgments,

orders, rules and regulations of any court or arbitrator or governmental or regulatory authority, internal policies and contractual

obligations relating to the privacy and security of IT Systems, Confidential Data, and Personal Data and to the protection of such IT

Systems, Confidential Data, and Personal Data from unauthorized use, access, misappropriation or modification.

(zz)            Compliance

with Data Privacy Laws. The Company and its subsidiaries are, and at all prior times were, in material compliance with all applicable

state and federal data privacy and security laws and regulations, including without limitation HIPAA, CCPA, and the European Union General

Data Protection Regulation (“GDPR”) (EU 2016/679) (collectively, the “Privacy Laws”). To ensure

compliance with the Privacy Laws, the Company and its subsidiaries have in place, comply with, and take appropriate steps reasonably designed

to ensure compliance in all material respects with their policies and procedures relating to data privacy and security and the collection,

storage, use, processing, disclosure, handling, and analysis of Personal Data and Confidential Data (the “Policies”).

The Company and its subsidiaries have at all times made all disclosures to users or customers required by applicable laws and regulatory

rules or requirements, and none of such disclosures made or contained in any Policy have been inaccurate or in violation of any applicable

laws and regulatory rules or requirements in any material respect. The Company further certifies that neither it nor any subsidiary:

(i) has received notice of any actual or potential liability under or relating to, or actual or potential violation of, any of the

Privacy Laws, and has no knowledge of any event or condition that would reasonably be expected to result in any such notice; (ii) is

currently conducting or paying for, in whole or in part, any investigation, remediation, or other corrective action pursuant to any Privacy

Law; or (iii) is a party to any order, decree, or agreement that imposes any obligation or liability under any Privacy Law.

-13-

(aaa)          No

Contract Terminations. Neither the Company nor any of its subsidiaries has sent or received any communication regarding termination

of, or intent not to renew, any of the contracts or agreements referred to or described in any preliminary prospectus, the Prospectus

or any free writing prospectus, or referred to or described in, or filed as an exhibit to, the Registration Statement, or any document

incorporated by reference therein, and no such termination or non-renewal has been threatened by the Company or any of its subsidiaries

or, to the Company’s knowledge, any other party to any such contract or agreement, which threat of termination or non-renewal has

not been rescinded as of the date hereof.

(bbb)         Dividend

Restrictions. No subsidiary of the Company is prohibited or restricted, directly or indirectly, from paying dividends to the Company,

or from making any other distribution with respect to such subsidiary’s equity securities or from repaying to the Company or any

other subsidiary of the Company any amounts that may from time to time become due under any loans or advances to such subsidiary from

the Company or from transferring any property or assets to the Company or to any other subsidiary.

(ccc)          Outbound

Investment Security Program. Neither the Company nor any of its subsidiaries is a “covered foreign person”, as that term

is defined in 31 C.F.R. § 850.209. Neither the Company nor any of its subsidiaries currently engages, or has plans to engage, directly

or indirectly, in a “covered activity”, as that term is defined in in 31 C.F.R. § 850.208 (“Covered Activity”).

The Company does not have any joint ventures that engage in or plan to engage in any Covered Activity. The Company also does not, directly

or indirectly, hold a board seat on, have a voting or equity interest in, or have any contractual power to direct or cause the direction

of the management or policies of any person or persons that engages or plans to engage in any Covered Activity.

Any certificate signed by

any officer of the Company or any of its subsidiaries and delivered to any Underwriter or to counsel for the Underwriters in connection

with the offering, or the purchase and sale, of the Offered Shares shall be deemed a representation and warranty by the Company to each

Underwriter as to the matters covered thereby.

The Company has a reasonable

basis for making each of the representations set forth in this Section 1. The Company acknowledges that the Underwriters and, for

purposes of the opinions to be delivered pursuant to Section 6, counsel to the Company and counsel to the Underwriters, will rely

upon the accuracy and truthfulness of the foregoing representations and hereby consents to such reliance.

2.            Purchase,

Sale and Delivery of the Offered Shares.

(a)              The

Firm Shares. Upon the terms herein set forth, the Company agrees to issue and sell to the several Underwriters an aggregate of 10,345,000

Firm Shares. On the basis of the representations, warranties and agreements herein contained, and upon the terms but subject to the conditions

herein set forth, the Underwriters agree, severally and not jointly, to purchase from the Company the respective number of Firm Shares

set forth opposite their names on Schedule A. The purchase price per Firm Share to be paid by the several Underwriters to

the Company shall be $27.26 per share.

(b)              The

First Closing Date. Delivery of the Firm Shares to be purchased by the Underwriters and payment therefor shall be made at the offices

of Wilmer Cutler Pickering Hale and Dorr LLP (or such other place as may be agreed to by the Company and the Representatives) at 9:00

a.m. New York City time, on April 6, 2026 or such other time and date not later than 1:30 p.m. New York City time, on April 6,

2026 or as the Representatives shall designate by notice to the Company (the time and date of such closing are called the “First

Closing Date”). The Company hereby acknowledges that circumstances under which the Representatives may provide notice to postpone

the First Closing Date as originally scheduled include, but are not limited to, any determination by the Company or the Representatives

to recirculate to the public copies of an amended or supplemented Prospectus or a delay as contemplated by the provisions of Section 11.

-14-

(c)              The

Option Shares; Option Closing Date. In addition, on the basis of the representations, warranties and agreements herein contained,

and upon the terms but subject to the conditions herein set forth, the Company hereby grants an option to the several Underwriters to

purchase, severally and not jointly, up to an aggregate of 1,551,750 Option Shares from the Company at the purchase price per share to

be paid by the Underwriters for the Firm Shares. The option granted hereunder may be exercised at any time and from time to time in whole

or in part upon notice by the Representatives to the Company, which notice may be given at any time within 30 days from the date of this

Agreement. Such notice shall set forth (i) the aggregate number of Option Shares as to which the Underwriters are exercising the

option and (ii) the time, date and place at which the Option Shares will be delivered (which time and date may be simultaneous with,

but not earlier than, the First Closing Date; and in the event that such time and date are simultaneous with the First Closing Date, the

term “First Closing Date” shall refer to the time and date of delivery of the Firm Shares and such Option Shares).

Any such time and date of delivery, if subsequent to the First Closing Date, is called an “Option Closing Date,” shall

be determined by the Representatives and shall not be earlier than three or later than five full Business Days after delivery of such

notice of exercise. If any Option Shares are to be purchased, (a) each Underwriter agrees, severally and not jointly, to purchase

the number of Option Shares (subject to such adjustments to eliminate fractional shares as the Representatives may determine) that bears

the same proportion to the total number of Option Shares to be purchased as the number of Firm Shares set forth on Schedule A opposite

the name of such Underwriter bears to the total number of Firm Shares and (b) the Company agrees to sell the number of Option Shares

set forth in the first paragraph of this Agreement (subject to such adjustments to eliminate fractional shares as the Representatives

may determine). The Representatives may cancel the option at any time prior to its expiration by giving written notice of such cancellation

to the Company.

(d)              Public

Offering of the Offered Shares. The Representatives hereby advise the Company that the Underwriters intend to offer for sale to the

public, initially on the terms set forth in the Registration Statement, the Time of Sale Prospectus and the Prospectus, their respective

portions of the Offered Shares as soon after this Agreement has been executed as the Representatives, in their sole judgment, have determined

is advisable and practicable.

(e)              Payment

for the Offered Shares. (i) Payment for the Offered Shares shall be made at the First Closing Date (and, if applicable, at each

Option Closing Date) by wire transfer of immediately available funds to the order of the Company. (ii) It is understood that the

Representatives have been authorized, for their own account and the accounts of the several Underwriters, to accept delivery of and receipt

for, and make payment of the purchase price for, the Firm Shares and any Option Shares the Underwriters have agreed to purchase. Each

of Leerink Partners LLC and TD Securities (USA) LLC, individually and not as the Representatives of the Underwriters, may (but shall

not be obligated to) make payment for any Offered Shares to be purchased by any Underwriter whose funds shall not have been received

by the Representatives by the First Closing Date or the applicable Option Closing Date, as the case may be, for the account of such Underwriter,

but any such payment shall not relieve such Underwriter from any of its obligations under this Agreement.

(f)               Delivery

of the Offered Shares. The Company shall deliver, or cause to be delivered to the Representatives for the accounts of the several

Underwriters the Firm Shares at the First Closing Date, against the irrevocable release of a wire transfer of immediately available funds

for the amount of the purchase price therefor. The Company shall also deliver, or cause to be delivered through the facilities of DTC

unless the Representatives shall otherwise instruct, to the Representatives for the accounts of the several Underwriters, the Option Shares

the Underwriters have agreed to purchase at the First Closing Date or the applicable Option Closing Date, as the case may be, against

the release of a wire transfer of immediately available funds for the amount of the purchase price therefor. If the Representatives so

elect, delivery of the Offered Shares may be made by credit to the accounts designated by the Representatives through The Depository Trust

Company’s full fast transfer or DWAC programs. The Offered Shares shall be registered in book-entry form in such names and denominations

as the Representatives shall have requested at least two full Business Days prior to the First Closing Date (or the applicable Option

Closing Date, as the case may be) and shall be made available for inspection on the Business Day preceding the First Closing Date (or

the applicable Option Closing Date, as the case may be) at a location in New York City as the Representatives may designate. Time shall

be of the essence, and delivery at the time and place specified in this Agreement is a further condition to the obligations of the Underwriters.

-15-

3.           Additional

Covenants of the Company.

The Company further covenants

and agrees with each Underwriter as follows:

(a)              Commission

Filing Fees. The Company agrees to pay the required Commission filing fees relating to the Offered Shares within the time required

by Rule 456(b)(1) under the Securities Act without regard to the proviso therein and otherwise in accordance with Rules 456(b) and

457(r) under the Securities Act.

(b)              Delivery

of Registration Statement, Time of Sale Prospectus and Prospectus. The Company shall furnish to the Representatives in New York City,

without charge, prior to 10:00 a.m. New York City time on the Business Day next succeeding the date of this Agreement and during

the period when a prospectus relating to the Offered Shares is required by the Securities Act to be delivered (whether physically or

through compliance with Rule 172 under the Securities Act or any similar rule) in connection with sales of the Offered Shares, as

many copies of the Time of Sale Prospectus, the Prospectus and any supplements and amendments thereto or to the Registration Statement

as the Representatives may reasonably request.

(c)              Representatives’

Review of Proposed Amendments and Supplements. During the period when a prospectus relating to the Offered Shares is required by

the Securities Act to be delivered (whether physically or through compliance with Rule 172 under the Securities Act or any similar

rule), the Company (i) will furnish to the Representatives for review, a reasonable period of time prior to the proposed time of

filing of any proposed amendment or supplement to the Registration Statement, a copy of each such amendment or supplement and (ii) will

not amend or supplement the Registration Statement (including any amendment or supplement through incorporation of any report filed under

the Exchange Act) without the Representatives’ prior written consent. Prior to amending or supplementing any preliminary prospectus,

the Time of Sale Prospectus or the Prospectus (including any amendment or supplement through incorporation of any report filed under

the Exchange Act), the Company shall furnish to the Representatives for review, a reasonable amount of time prior to the time of filing

or use of the proposed amendment or supplement, a copy of each such proposed amendment or supplement. The Company shall not file or use

any such proposed amendment or supplement without the Representatives’ prior written consent. The Company shall file with the Commission

within the applicable period specified in Rule 424(b) under the Securities Act any prospectus required to be filed pursuant

to such Rule.

(d)              Free

Writing Prospectuses. The Company shall furnish to the Representatives for review, a reasonable amount of time prior to the proposed

time of filing or use thereof, a copy of each proposed free writing prospectus or any amendment or supplement thereto prepared by or

on behalf of, used by, or referred to by the Company, and the Company shall not file, use or refer to any proposed free writing prospectus

or any amendment or supplement thereto without the Representatives’ prior written consent. The Company shall furnish to each Underwriter,

without charge, as many copies of any free writing prospectus prepared by or on behalf of, used by or referred to by the Company as such

Underwriter may reasonably request. If at any time when a prospectus is required by the Securities Act to be delivered (whether physically

or through compliance with Rule 172 under the Securities Act or any similar rule) in connection with sales of the Offered Shares

(but in any event if at any time through and including the First Closing Date) there occurred or occurs an event or development as a

result of which any free writing prospectus prepared by or on behalf of, used by, or referred to by the Company conflicted or would conflict

with the information contained in the Registration Statement or included or would include an untrue statement of a material fact or omitted

or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances prevailing

at such time, not misleading, the Company shall promptly amend or supplement such free writing prospectus to eliminate or correct such

conflict so that the statements in such free writing prospectus as so amended or supplemented will not include an untrue statement of

a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances

prevailing at such time, not misleading, as the case may be; provided, however, that prior to amending or supplementing

any such free writing prospectus, the Company shall furnish to the Representatives for review, a reasonable amount of time prior to the

proposed time of filing or use thereof, a copy of such proposed amended or supplemented free writing prospectus, and the Company shall

not file, use or refer to any such amended or supplemented free writing prospectus without the Representatives’ prior written consent.

-16-

(e)              Filing

of Underwriter Free Writing Prospectuses. The Company shall not take any action that would result in an Underwriter or the Company

being required to file with the Commission pursuant to Rule 433(d) under the Securities Act a free writing prospectus prepared

by or on behalf of such Underwriter that such Underwriter otherwise would not have been required to file thereunder.

(f)               Amendments

and Supplements to Time of Sale Prospectus. If the Time of Sale Prospectus is being used to solicit offers to buy the Offered Shares

at a time when the Prospectus is not yet available to prospective purchasers, and any event shall occur or condition exist as a result

of which it is necessary to amend or supplement the Time of Sale Prospectus so that the Time of Sale Prospectus does not include an untrue

statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances

when delivered to a prospective purchaser, not misleading, or if any event shall occur or condition exist as a result of which the Time

of Sale Prospectus conflicts with the information contained in the Registration Statement, or if, in the opinion of counsel for the Underwriters,

it is necessary to amend or supplement the Time of Sale Prospectus to comply with applicable Law, the Company shall (subject to Section 3(b) and

Section 3(c)) promptly prepare, file with the Commission and furnish, at its own expense, to the Underwriters and to any dealer upon

request, either amendments or supplements to the Time of Sale Prospectus so that the statements in the Time of Sale Prospectus as so amended

or supplemented will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the

statements therein, in the light of the circumstances when delivered to a prospective purchaser, not misleading or so that the Time of

Sale Prospectus, as amended or supplemented, will no longer conflict with the information contained in the Registration Statement, or

so that the Time of Sale Prospectus, as amended or supplemented, will comply with applicable Law.

(g)              Certain

Notifications and Required Actions. After the date of this Agreement, the Company shall promptly advise the Representatives in writing

of: (i) the receipt of any comments of, or requests for additional or supplemental information from, the Commission; (ii) the

time and date of any filing of any post-effective amendment to the Registration Statement or any amendment or supplement to any preliminary

prospectus, the Time of Sale Prospectus, any free writing prospectus or the Prospectus; (iii) the time and date that any post-effective

amendment to the Registration Statement becomes effective; and (iv) the issuance by the Commission of any stop order suspending the

effectiveness of the Registration Statement or any post-effective amendment thereto or any amendment or supplement to any preliminary

prospectus, the Time of Sale Prospectus or the Prospectus or of any order preventing or suspending the use of any preliminary prospectus,

the Time of Sale Prospectus, any free writing prospectus or the Prospectus, or of any proceedings to remove, suspend or terminate from

listing or quotation the Shares from any securities exchange upon which they are listed for trading or included or designated for quotation,

or of the threatening or initiation of any proceedings for any of such purposes. If the Commission shall enter any such stop order at

any time, the Company will use its best efforts to obtain the lifting of such order at the earliest possible moment. Additionally, the

Company agrees that it shall comply with all applicable provisions of Rule 424(b), Rule 433 and Rule 430B under the Securities

Act and will use its reasonable efforts to confirm that any filings made by the Company under Rule 424(b) or Rule 433 were

received in a timely manner by the Commission. If, after the date of this Agreement and during any time when a prospectus is required

by the Securities Act to be delivered (whether physically or through compliance with Rule 172 under the Securities Act or any similar

rule), the Company receives notice pursuant to Rule 401(g)(2) under the Securities Act from the Commission or otherwise ceases

to be eligible to use the automatic shelf registration form, the Company shall promptly advise the Representatives in writing of such

notice or ineligibility and will (i) promptly file a new registration statement or post-effective amendment on the proper form relating

to the Offered Shares, (ii) use its best efforts to cause such registration statement or post-effective amendment to be declared

effective by the Commission as soon as practicable and (iii) promptly notify the Representatives in writing of such effectiveness.

(h)              Amendments

and Supplements to the Prospectus and Other Securities Act Matters. If any event shall occur or condition exist as a result of which

it is necessary to amend or supplement the Prospectus so that the Prospectus does not include an untrue statement of a material fact or

omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances when the Prospectus

is delivered (whether physically or through compliance with Rule 172 under the Securities Act or any similar rule) to a purchaser,

not misleading, or if in the opinion of the Representatives or counsel for the Underwriters it is otherwise necessary to amend or supplement

the Prospectus to comply with applicable Law, the Company agrees (subject to Section 3(b) and Section 3(c)) to promptly

prepare, file with the Commission and furnish, at its own expense, to the Underwriters and to any dealer upon request, amendments or supplements

to the Prospectus so that the statements in the Prospectus as so amended or supplemented will not include an untrue statement of a material

fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances when the Prospectus

is delivered (whether physically or through compliance with Rule 172 under the Securities Act or any similar rule) to a purchaser,

not misleading or so that the Prospectus, as amended or supplemented, will comply with applicable Law. Neither the Representatives’

consent to, nor delivery of, any such amendment or supplement shall constitute a waiver of any of the Company’s obligations under

Section 3(b) or Section 3(c).

-17-

(i)               Blue

Sky Compliance. The Company shall cooperate with the Representatives and counsel for the Underwriters to qualify or register the Offered

Shares for sale under (or obtain exemptions from the application of) the state securities or blue sky Laws or Canadian provincial securities

Laws (or other foreign Laws) of those jurisdictions designated by the Representatives, shall comply with such Laws and shall continue

such qualifications, registrations and exemptions in effect so long as required for the distribution of the Offered Shares. The Company

shall not be required to qualify as a foreign corporation or to take any action that would subject it to general service of process in

any such jurisdiction where it is not presently qualified or where it would be subject to taxation as a foreign corporation. The Company

will advise the Representatives promptly of the suspension of the qualification or registration of (or any such exemption relating to)

the Offered Shares for offering, sale or trading in any jurisdiction or any initiation or threat of any proceeding for any such purpose,

and in the event of the issuance of any order suspending such qualification, registration or exemption, the Company shall use its best

efforts to obtain the withdrawal thereof at the earliest possible moment.

(j)               Use

of Proceeds. The Company shall apply the net proceeds from the sale of the Offered Shares sold by it in the manner described under

the caption “Use of Proceeds” in the Registration Statement, the Time of Sale Prospectus and the Prospectus.

(k)             Transfer

Agent. The Company shall engage and maintain, at its expense, a registrar and transfer agent for the Shares.

(l)               Earnings

Statement. The Company will make generally available to its security holders and to the Representatives as soon as practicable an

earnings statement (which need not be audited) covering a period of at least twelve months beginning with the first fiscal quarter of

the Company commencing after the date of this Agreement that will satisfy the provisions of Section 11(a) of the Securities

Act and the rules and regulations of the Commission thereunder.

(m)            Continued

Compliance with Securities Laws. The Company will comply with the Securities Act and the Exchange Act so as to permit the

completion of the distribution of the Offered Shares as contemplated by this Agreement, the Registration Statement, the

Time of Sale Prospectus and the Prospectus. Without limiting the generality of the foregoing, the Company will, during the period

when a prospectus relating to the Offered Shares is required by the Securities Act to be delivered (whether physically or through

compliance with Rule 172 under the Securities Act or any similar rule), file on a timely basis with the Commission and the

Nasdaq all reports and documents required to be filed under the Exchange Act.

(n)             Listing.

The Company will use its best efforts to list, subject to notice of issuance, the Offered Shares on the Nasdaq.

(o)             Company

to Provide Copy of the Prospectus in Form That May be Downloaded from the Internet. If requested by the Representatives,

the Company shall cause to be prepared and delivered, at its expense, within one Business Day from the effective date of this Agreement,

to the Underwriters, an “electronic Prospectus” to be used by the Underwriters in connection with the offering and

sale of the Offered Shares. As used herein, the term “electronic Prospectus” means a form of Time of Sale Prospectus,

and any amendment or supplement thereto, that meets each of the following conditions: (i) it shall be encoded in an electronic format,

satisfactory to the Representatives, that may be transmitted electronically by the Representatives and the other Underwriters to offerees

and purchasers of the Offered Shares; (ii) it shall disclose the same information as the paper Time of Sale Prospectus, except to

the extent that graphic and image material cannot be disseminated electronically, in which case such graphic and image material shall

be replaced in the electronic Prospectus with a fair and accurate narrative description or tabular representation of such material, as

appropriate; and (iii) it shall be in or convertible into a paper format or an electronic format, satisfactory to the Representatives,

that will allow investors to store and have continuously ready access to the Time of Sale Prospectus at any future time, without charge

to investors (other than any fee charged for subscription to the Internet as a whole and for on-line time). The Company hereby confirms

that it has included or will include in the Prospectus filed pursuant to EDGAR or otherwise with the Commission and in the Registration

Statement at the time it was declared effective an undertaking that, upon receipt of a request by an investor or his or her representative,

the Company shall transmit or cause to be transmitted promptly, without charge, a paper copy of the Time of Sale Prospectus.

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(p)             Agreement

Not to Offer or Sell Additional Shares. During the period commencing on and including the date hereof and continuing through and including

the 60th day following the date of the Prospectus (such period, as extended as described below, being referred to herein as the “Lock-up

Period”), the Company will not, without the prior written consent of the Representatives (which consent may be withheld in its

sole discretion), directly or indirectly: (i) sell, offer to sell, contract to sell or lend any Shares or Related Securities (as

defined below); (ii) effect any short sale, or establish or increase any “put equivalent position” (as defined in Rule 16a-1(h) under

the Exchange Act) or liquidate or decrease any “call equivalent position” (as defined in Rule 16a-1(b) under the

Exchange Act) of any Shares or Related Securities; (iii) pledge, hypothecate or grant any security interest in any Shares or Related

Securities, or in any other way transfer or dispose of any Shares or Related Securities; (iv) enter into any swap, hedge or similar

arrangement or agreement that transfers, in whole or in part, the economic risk of ownership of any Shares or Related Securities, regardless

of whether any such transaction is to be settled in securities, in cash or otherwise; (v) announce the offering of any Shares or

Related Securities; (vi) submit or file any registration statement under the Securities Act in respect of any Shares or Related Securities

(other than as contemplated by this Agreement with respect to the Offered Shares); (vii) effect a revise stock split, recapitalization,

share consolidation, reclassification or similar transaction affecting the outstanding Shares, or (viii) publicly announce the intention

to do any of the foregoing; provided, however, that the Company may (A) effect the transactions contemplated

hereby and (B) issue Shares or options to purchase Shares, or issue Shares upon exercise of warrants or options, pursuant to any

stock option, stock bonus or other stock plan or arrangement described in the Registration Statement, the Time of Sale Prospectus and

the Prospectus or pursuant to plans approved by the Company’s stockholders subsequent to the date of the Prospectus, (C) file

any registration statements on Form S-8 with respect to any stock option, stock bonus or other stock plan or arrangement of the Company,

(D) issue Shares upon the exercise of any warrants outstanding on the date hereof, (E) issue Shares in full or partial satisfaction

of milestone obligations due to third parties; and (F) issue, in connection with mergers or acquisitions of businesses, entities,

property or other assets, joint ventures, licenses, commercial relationships or strategic alliances, of Shares (the shares referred to

in clause (F) and so issued, the “Carveout Shares”) not exceeding in the aggregate that number of shares equal

to five percent (5%) of the Company’s outstanding Shares, determined as of the First Closing Date, provided that the Company shall

cause each such recipient of Carveout Shares to execute and deliver to the Representatives a lock-up agreement substantially in the form

of Exhibit A hereto for the balance of the Lock-up Period. For purposes of the foregoing, “Related Securities”

shall mean any options or warrants or other rights to acquire Shares or any securities exchangeable or exercisable for or convertible

into Shares, or to acquire other securities or rights ultimately exchangeable or exercisable for, or convertible into, Shares.

(q)             Future

Reports to the Representatives. During the period of three years hereafter, the Company will furnish to the Representatives, c/o Leerink

Partners LLC, 53 State Street, 40th Floor, Boston, MA 02109, Attention: Syndicate Department and c/o TD Securities (USA) LLC, 1 Vanderbilt

Avenue, New York, New York 10017, Attention: Attention: Head of Equity Capital Markets: (i) as soon as practicable after the end

of each fiscal year, copies of the Annual Report of the Company containing the balance sheet of the Company as of the close of such fiscal

year and statements of income, stockholders’ equity and cash flows for the year then ended and the opinion thereon of the Company’s

independent public or certified public accountants; (ii) as soon as practicable after the filing thereof, copies of each proxy statement,

Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other report filed by the Company

with the Commission, FINRA or any securities exchange; and (iii) as soon as available, copies of any report or communication of the

Company furnished or made available generally to holders of its capital stock; provided, however, that the requirements

of this Section 3(p) shall be satisfied to the extent that such reports, statement, communications, financial statements or

other documents are available on EDGAR.

(r)              Investment

Limitation. The Company shall not invest or otherwise use the proceeds received by the Company from its sale of the Offered Shares

in such a manner as would require the Company or any of its subsidiaries to register as an investment company under the Investment Company

Act.

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(s)              No

Stabilization or Manipulation; Compliance with Regulation M. The Company will not take, and will ensure that no affiliate of the Company

will take, directly or indirectly, without giving effect to activities by the Underwriters, any action designed to or that might cause

or result in stabilization or manipulation of the price of the Shares or any reference security with respect to the Shares, whether to

facilitate the sale or resale of the Offered Shares or otherwise, and the Company will, and shall cause each of its affiliates to, comply

with all applicable provisions of Regulation M.

(t)              Enforce

Lock-Up Agreements. During the Lock-up Period, the Company will enforce all agreements between the Company and any of its security

holders that restrict or prohibit, expressly or in operation, the offer, sale or transfer of Shares or Related Securities or any of the

other actions restricted or prohibited under the terms of the form of Lock-up Agreement. In addition, the Company will direct the transfer

agent to place stop transfer restrictions upon any such securities of the Company that are bound by such “lock-up” agreements

for the duration of the periods contemplated in such agreements, including, without limitation, “lock-up” agreements entered

into by the Company’s officers and directors pursuant to 1(xx) hereof.

(u)             Company

to Provide Interim Financial Statements. Prior to the First Closing Date and each applicable Option Closing Date, the Company will

furnish the Underwriters, as soon as they have been prepared by or are available to the Company, a copy of any unaudited interim financial

statements of the Company for any period subsequent to the period covered by the most recent financial statements appearing in the Registration

Statement and the Prospectus.

The Representatives, on behalf

of the several Underwriters, may, in their sole discretion, waive in writing the performance by the Company of any one or more of the

foregoing covenants or extend the time for their performance.

4.                 Payment

of Expenses. The Company agrees to pay all costs, fees and expenses incurred in connection with the performance of its obligations

hereunder and in connection with the transactions contemplated hereby, including (i) all expenses incident to the issuance and delivery

of the Offered Shares (including all printing and engraving costs), (ii) all fees and expenses of the registrar and transfer agent

of the Shares, (iii) all necessary issue, transfer and other stamp taxes in connection with the issuance and sale of the Offered

Shares to the Underwriters, (iv) all fees and expenses of the Company’s counsel, independent public or certified public accountants

and other advisors, (v) all costs and expenses incurred in connection with the preparation, printing, filing, shipping and distribution

of the Registration Statement (including financial statements, exhibits, schedules, consents and certificates of experts), the Time of

Sale Prospectus, the Prospectus, each free writing prospectus prepared by or on behalf of, used by, or referred to by the Company, and

each preliminary prospectus and all amendments and supplements thereto, and this Agreement, (vi) all filing fees, attorneys’

fees and expenses incurred by the Company or the Underwriters in connection with qualifying or registering (or obtaining exemptions from

the qualification or registration of) all or any part of the Offered Shares for offer and sale under the state securities or blue sky

Laws or the provincial securities Laws of Canada, and, if requested by the Representatives, preparing and printing a “Blue Sky Survey”

or memorandum and a “Canadian wrapper”, and any supplements thereto, advising the Underwriters of such qualifications, registrations

and exemptions, in an amount not to exceed $7,500, (vii) the costs, fees and expenses incurred by the Underwriters in connection

with determining their compliance with the rules and regulations of FINRA related to the Underwriters’ participation in the

offering and distribution of the Offered Shares, including any related filing fees and the legal fees of, and disbursements by, counsel

to the Underwriters, in an amount not to exceed $15,000, (viii) the costs and expenses of the Company relating to investor presentations

on any “road show” undertaken in connection with the offering of the Shares, including, without limitation, expenses associated

with the preparation or dissemination of any electronic road show, expenses associated with the production of road show slides and graphics,

fees and expenses of any consultants engaged in connection with the road show presentations with the prior approval of the Company, travel

and lodging expenses of the Representatives, employees and officers of the Company and any such consultants, and the cost of any aircraft

chartered in connection with the Road Show; provided, however, that any such aircraft shall only be chartered with the Company’s

prior written consent, (ix) the fees and expenses associated with listing the Offered Shares on the Nasdaq, and (x) all other

fees, costs and expenses of the nature referred to in Item 13 of Part II of the Registration Statement. Any such amount payable to

the Underwriters may be deducted from the purchase price for the Offered Shares. Except as provided in this Section 4 or in Section 7,

Section 9 or Section 10, the Underwriters shall pay their own expenses, including the fees and disbursements of their counsel.

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5.                 Covenant

of the Underwriters. Each Underwriter severally and not jointly covenants with the Company not to take any action that would result

in the Company being required to file with the Commission pursuant to Rule 433(d) under the Securities Act a free writing prospectus

prepared by or on behalf of such Underwriter that otherwise would not, but for such actions, be required to be filed by the Company under

Rule 433(d).

6.                 Conditions

of the Obligations of the Underwriters. The respective obligations of the several Underwriters hereunder to purchase and pay for the

Offered Shares as provided herein on the First Closing Date and, with respect to the Option Shares, each Option Closing Date, shall be

subject to the accuracy of the representations and warranties on the part of the Company set forth in Section 1 as of the date hereof

and as of the First Closing Date as though then made and, with respect to the Option Shares, as of each Option Closing Date as though

then made, to the timely performance by the Company of its covenants and other obligations hereunder, and to each of the following additional

conditions:

(a)              Comfort

Letter. On the date hereof, the Representatives shall have received from PricewaterhouseCoopers LLP, independent registered public

accountants for the Company, a letter dated the date hereof addressed to the Underwriters, in form and substance satisfactory to the Representatives,

containing statements and information of the type ordinarily included in accountant’s “comfort letters” to underwriters,

delivered according to Statement of Auditing Standards No. 72 (or any successor bulletin), with respect to the audited and unaudited

financial statements and certain financial information contained in the Registration Statement, the Time of Sale Prospectus, and each

free writing prospectus, if any.

(b)              Compliance

with Registration Requirements; No Stop Order; No Objection from FINRA. For the period from and after the date of this Agreement and

through and including the First Closing Date and, with respect to any Option Shares purchased after the First Closing Date, each Option

Closing Date:

(i)                 The

Company shall have filed the Prospectus with the Commission (including the information required by Rule 430A under the Securities

Act) in the manner and within the time period required by Rule 424(b) under the Securities Act; or the Company shall have filed

a post-effective amendment to the Registration Statement containing the information required by such Rule 430A, and such post-effective

amendment shall have become effective.

(ii)                No

stop order suspending the effectiveness of the Registration Statement or any post-effective amendment to the Registration Statement shall

be in effect, and no proceedings for such purpose shall have been instituted or threatened by the Commission.

(iii)              If

a filing has been made with FINRA, FINRA shall have raised no objection to the fairness and reasonableness of the underwriting terms and

arrangements.

(c)              No

Material Adverse Effect or Ratings Agency Change. For the period from and after the date of this Agreement and through and including

the First Closing Date and, with respect to any Option Shares purchased after the First Closing Date, each Option Closing Date, in the

judgment of the Representatives there shall not have occurred any material adverse change in the authorized capital stock of the Company

or any Material Adverse Effect or any development that would cause a Material Adverse Effect, or a downgrading in or withdrawal of the

rating assigned to any of the Company’s securities (other than asset backed securities) by any rating organization or a public announcement

by any rating organization that it has under surveillance or review its rating of any of the Company’s securities (other than asset

backed securities), the effect of which, in the case of any such action by a rating organization described above.

(d)             Opinion

of Counsel for the Company. On each of the First Closing Date and each Option Closing Date the Representatives shall have received

the opinion and negative assurance letter of Lowenstein Sandler LLP, counsel for the Company, dated as of such date, in form and substance

satisfactory to the Representatives.

(e)              Opinions

of Intellectual Property and Regulatory Counsels. On each of the First Closing Date and each Option Closing Date, the Representatives

shall have received the opinion of Phillip Walters of the Company with respect to intellectual property and the opinion of Freddy A. Jimenez

of the Company with respect to regulatory matters, dated as of such date, in form and substance satisfactory to the Representatives.

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(f)               Opinion

of Counsel for the Underwriters. On each of the First Closing Date and each Option Closing Date the Representatives shall have received

the opinion of Wilmer Cutler Pickering Hale and Dorr LLP, counsel for the Underwriters in connection with the offer and sale of the Offered

Shares, in form and substance satisfactory to the Representatives, dated as of such date.

(g)             Officers’

Certificate. On each of the First Closing Date and each Option Closing Date, the Representatives shall have received a certificate

executed by the Chief Executive Officer or President of the Company and the Chief Financial Officer of the Company, dated as of such date,

to the effect set forth in Section 6(b)(ii) and further to the effect that:

(i)                for

the period from and including the date of this Agreement through and including such date, there has not occurred any Material Adverse

Effect;

(ii)               the

representations, warranties and covenants of the Company set forth in Section 1 are true and correct with the same force and effect

as though expressly made on and as of such date; and

(iii)              the

Company has complied with all the agreements hereunder and satisfied all the conditions on its part to be performed or satisfied hereunder

at or prior to such date.

(h)              Chief

Financial Officer’s Certificate. On each of the First Closing Date and each Option Closing Date, the Representatives shall have

received a certificate executed by the Chief Financial Officer of the Company, dated as of such date, in form and substance satisfactory

to the Representatives.

(i)               Bring-down

Comfort Letter. On each of the First Closing Date and each Option Closing Date the Representatives shall have received from PricewaterhouseCoopers LLP,

independent registered public accountants for the Company, a letter dated such date, in form and substance satisfactory to the Representatives,

which letter shall: (i) reaffirm the statements made in the letter furnished by them pursuant to Section 6(a), except that the

specified date referred to therein for the carrying out of procedures shall be no more than three Business Days prior to the First Closing

Date or the applicable Option Closing Date, as the case may be; and (ii) cover certain financial information contained in the Prospectus.

(j)               Lock-Up

Agreements. On or prior to the date hereof, the Company shall have furnished to the Representatives an agreement in the form of Exhibit A hereto

from the directors and executive officers (as defined in Rule 16a-1(f) under the Exchange Act), and each such agreement shall

be in full force and effect on each of the First Closing Date and each Option Closing Date.

(k)              Rule 462(b) Registration

Statement. In the event that a Rule 462(b) Registration Statement is filed in connection with the offering contemplated

by this Agreement, such Rule 462(b) Registration Statement shall have been filed with the Commission on the date of this Agreement

and shall have become effective automatically upon such filing.

(l)               Nasdaq.

The Company shall have submitted a listing of additional shares notification form to Nasdaq with respect to the Offered Shares and shall

have received no objection thereto from Nasdaq.

(m)            Additional

Documents. On or before each of the First Closing Date and each Option Closing Date, the Representatives and counsel for the Underwriters

shall have received such information, documents and opinions as they may reasonably request for the purposes of enabling them to pass

upon the issuance and sale of the Offered Shares as contemplated herein, or in order to evidence the accuracy of any of the representations

and warranties, or the satisfaction of any of the conditions or agreements, herein contained; and all proceedings taken by the Company

in connection with the issuance and sale of the Offered Shares as contemplated herein and in connection with the other transactions contemplated

by this Agreement shall be satisfactory in form and substance to the Representatives and counsel for the Underwriters.

If any condition specified

in this Section 6 is not satisfied when and as required to be satisfied, this Agreement may be terminated by the Representatives

by notice from the Representatives to the Company at any time on or prior to the First Closing Date and, with respect to the Option Shares,

at any time on or prior to the applicable Option Closing Date, which termination shall be without liability on the part of any party to

any other party, except that Section 4, Section 7, Section 9 and Section 10 shall at all times be effective and shall

survive such termination.

-22-

7.                 Reimbursement

of Underwriters’ Expenses. If this Agreement is terminated by the Representatives pursuant to Section 6, Section 11

or Section 12, or if the sale to the Underwriters of the Offered Shares on the First Closing Date is not consummated because of any

refusal, inability or failure on the part of the Company to perform any agreement herein or to comply with any provision hereof, the Company

agrees to reimburse the Representatives and the other Underwriters (or such Underwriters as have terminated this Agreement with respect

to themselves), severally, upon demand for all out-of-pocket expenses that shall have been reasonably incurred by the Representatives

and the Underwriters in connection with the proposed purchase and the offering and sale of the Offered Shares, including, but not limited

to, fees and disbursements of counsel, printing expenses, travel expenses, postage, facsimile and telephone charges.

8.                 Effectiveness

of this Agreement. This Agreement shall become effective upon the execution and delivery hereof by the parties hereto.

9.                 Indemnification.

(a)               Indemnification

of the Underwriters. The Company agrees to indemnify and hold harmless each Underwriter, its affiliates, partners, members, directors,

officers, employees and agents, and each person, if any, who controls any Underwriter within the meaning of the Securities Act or the

Exchange Act against any loss, claim, damage, liability or expense, as incurred, to which such Underwriter or such affiliate, partner,

member, director, officer, employee, agent or controlling person may become subject, under the Securities Act, the Exchange Act, other

federal or state statutory law or regulation, or the laws or regulations of foreign jurisdictions where Offered Shares have been offered

or sold or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent

of the Company), insofar as such loss, claim, damage, liability or expense (or actions in respect thereof as contemplated below) arises

out of or is based upon:

(i)                any

untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto) or

the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein

not misleading; or

(ii)               any

untrue statement or alleged untrue statement of a material fact included in any preliminary prospectus, the Time of Sale Prospectus, any

free writing prospectus that the Company has used, referred to or filed, or is required to file, pursuant to Rule 433(d) of

the Securities Act, or the Prospectus (or any amendment or supplement to the foregoing), or the omission or alleged omission to state

therein a material fact necessary in order to make the statements, in the light of the circumstances under which they were made, not misleading;

or

(iii)               any act or failure to act or any alleged act or failure to act by any Underwriter in connection with, or relating in any manner to,

the Shares or the offering contemplated hereby, and which is included as part of or referred to in any loss, claim, damage,

liability or action arising out of or based upon any matter covered by clause (i) or (ii) above; and to reimburse each

Underwriter and each such affiliate, partner, member, director, officer, employee, agent and controlling person for any and all

expenses (including the fees and disbursements of counsel) as such expenses are incurred by such Underwriter or such affiliate,

partner, member, director, officer, employee, agent or controlling person in connection with investigating, defending, settling,

compromising or paying any such loss, claim, damage, liability, expense or action; provided, however,

that the foregoing indemnity agreement shall not apply to any loss, claim, damage, liability or expense to the extent, but only to

the extent, arising out of or based upon any untrue statement or alleged untrue statement or omission or alleged omission made in

reliance upon and in conformity with information relating to any Underwriter furnished to the Company by the Representatives in

writing expressly for use in the Registration Statement, any preliminary prospectus, the Time of Sale Prospectus, any such free

writing prospectus or the Prospectus (or any amendment or supplement thereto), it being understood and agreed that the only such

information consists of the information described in ‎Section 9(b) below. The indemnity agreement set forth in this

‎Section 9(a) shall be in addition to any liabilities that the Company may otherwise have.

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(b)              Indemnification

of the Company, its Directors and Officers. Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the

Company, each of its directors, each of its officers who signed the Registration Statement and each person, if any, who controls the

Company within the meaning of the Securities Act or the Exchange Act, against any loss, claim, damage, liability or expense, as incurred,

to which the Company, or any such director, officer or controlling person may become subject, under the Securities Act, the Exchange

Act or other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation,

if such settlement is effected with the written consent of such Underwriter), insofar as such loss, claim, damage, liability or expense

(or actions in respect thereof as contemplated below) arises out of or is based upon (i) any untrue statement or alleged untrue

statement of a material fact contained in the Registration Statement, or any amendment thereto, or any omission or alleged omission to

state therein a material fact required to be stated therein or necessary to make the statements therein not misleading or (ii) any

untrue statement or alleged untrue statement of a material fact included in any preliminary prospectus, the Time of Sale Prospectus,

any free writing prospectus that the Company has used, referred to or filed, or is required to file, pursuant to Rule 433 of the

Securities Act or the Prospectus (or any amendment or supplement to the foregoing) or the omission or alleged omission to state therein

a material fact necessary in order to make the statements, in the light of the circumstances under which they were made, not misleading,

in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission

was made in the Registration Statement, such preliminary prospectus, the Time of Sale Prospectus, such free writing prospectus or the

Prospectus (or any amendment or supplement to the foregoing), in reliance upon and in conformity with information relating to such Underwriter

furnished to the Company by the Representatives in writing expressly for use therein; and to reimburse the Company, or any such director,

officer or controlling person for any and all expenses (including the fees and disbursements of counsel) as such expenses are incurred

by the Company, or any such director, officer or controlling person in connection with investigating, defending, settling, compromising

or paying any such loss, claim, damage, liability, expense or action. The Company hereby acknowledges that the only information that

the Representatives have furnished to the Company expressly for use in the Registration Statement, any preliminary prospectus, the Time

of Sale Prospectus, any free writing prospectus that the Company has filed, or is required to file, pursuant to Rule 433(d) of

the Securities Act or the Prospectus (or any amendment or supplement to the foregoing) are (i) the statements set forth in the sentences

and figure relating to selling concession appearing in the first paragraph under the heading “Underwriting—Discounts and

Commissions” and (ii) the statements concerning the Underwriters contained in the second and third paragraphs under the heading

“Underwriting—Price Stabilization, Short Positions and Penalty Bids.” each under the caption “Underwriting”

in the Preliminary Prospectus and Prospectus (the “Underwriter Information”). The indemnity agreement set forth in

this ‎Section 9(b) shall be in addition to any liabilities that each Underwriter may otherwise have.

(c)              Notifications

and Other Indemnification Procedures. Promptly after receipt by an indemnified party under this ‎Section 9 of notice of the

commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against an indemnifying party under

this ‎Section 9, notify the indemnifying party in writing of the commencement thereof, but the omission to so notify the indemnifying

party will not relieve the indemnifying party from any liability which it may have to any indemnified party to the extent the indemnifying

party is not materially prejudiced as a proximate result of such failure and shall not in any event relieve the indemnifying party from

any liability that it may have otherwise than on account of this indemnity agreement. In case any such action is brought against any indemnified

party and such indemnified party seeks or intends to seek indemnity from an indemnifying party, the indemnifying party will be entitled

to participate in, and, to the extent that it shall elect, jointly with all other indemnifying parties similarly notified, by written

notice delivered to the indemnified party promptly after receiving the aforesaid notice from such indemnified party, to assume the defense

thereof with counsel reasonably satisfactory to such indemnified party; provided, however, that if the

defendants in any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably

concluded that a conflict may arise between the positions of the indemnifying party and the indemnified party in conducting the defense

of any such action or that there may be legal defenses available to it and/or other indemnified parties which are different from or additional

to those available to the indemnifying party, the indemnified party or parties shall have the right to select separate counsel to assume

such legal defenses and to otherwise participate in the defense of such action on behalf of such indemnified party or parties. Upon receipt

of notice from the indemnifying party to such indemnified party of such indemnifying party’s election to so assume the defense of

such action and approval by the indemnified party of counsel, the indemnifying party will not be liable to such indemnified party under

this ‎Section 9 for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense

thereof unless (i) the indemnified party shall have employed separate counsel in accordance with the proviso to the preceding sentence

(it being understood, however, that the indemnifying party shall not be liable for the fees and expenses of more than one separate counsel

(together with local counsel), representing the indemnified parties who are parties to such action), which counsel (together with any

local counsel) for the indemnified parties shall be selected by the Representatives (in the case of counsel for the indemnified parties

referred to in Section 9(a) above) or by the Company (in the case of counsel for the indemnified parties referred to in ‎Section 9(b) above)

or (ii) the indemnifying party shall not have employed counsel satisfactory to the indemnified party to represent the indemnified

party within a reasonable time after notice of commencement of the action or (iii) the indemnifying party has authorized in writing

the employment of counsel for the indemnified party at the expense of the indemnifying party, in each of which cases the fees and expenses

of counsel shall be at the expense of the indemnifying party and shall be paid as they are incurred.

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(d)              Settlements.

The indemnifying party under this ‎Section 9 shall not be liable for any settlement of any proceeding effected without its written

consent, but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify

the indemnified party against any loss, claim, damage, liability or expense by reason of such settlement or judgment. Notwithstanding

the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party

for fees and expenses of counsel as contemplated by ‎Section 9(c) hereof, the indemnifying party shall be liable for any

settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 30 days

after receipt by such indemnifying party of the aforesaid request and (ii) such indemnifying party shall not have reimbursed the

indemnified party in accordance with such request prior to the date of such settlement. No indemnifying party shall, without the prior

written consent of the indemnified party, effect any settlement, compromise or consent to the entry of judgment in any pending or threatened

action, suit or proceeding in respect of which any indemnified party is or could have been a party and indemnity was or could have been

sought hereunder by such indemnified party, unless such settlement, compromise or consent includes an unconditional release of such indemnified

party from all liability on claims that are the subject matter of such action, suit or proceeding and does not include an admission of

fault or culpability or a failure to act by or on behalf of such indemnified party.

10.              Contribution.

In order to provide for just and equitable contribution in circumstances in which the indemnification provided for in the foregoing paragraphs

of Section 9 is applicable in accordance with its terms but for any reason is held to be unavailable or insufficient from the Company

or the Underwriters, the Company and the Underwriters will contribute to the total losses, claims, liabilities, expenses and damages (including

any investigative, legal and other expenses reasonably incurred in connection with, and any amount paid in settlement of, any action,

suit or proceeding or any claim asserted) to which any indemnified party may be subject in such proportion as shall be appropriate to

reflect the relative benefits received by the Company on the one hand and the Underwriters on the other hand. The relative benefits received

by the Company on the one hand and the Underwriters on the other hand shall be deemed to be in the same proportion as the total net proceeds

from the sale of the Offered Shares (before deducting expenses) received by the Company bear to the total compensation received by the

Underwriters (before deducting expenses) from the sale of Offered Shares on behalf of the Company. If, but only if, the allocation provided

by the foregoing sentence is not permitted by applicable Law, the allocation of contribution shall be made in such proportion as is appropriate

to reflect not only the relative benefits referred to in the foregoing sentence but also the relative fault of the Company, on the one

hand, and the Underwriters, on the other hand, with respect to the statements or omission that resulted in such loss, claim, liability,

expense or damage, or action in respect thereof, as well as any other relevant equitable considerations with respect to such offering.

Such relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material

fact or omission or alleged omission to state a material fact relates to information supplied by the Company or the Underwriters, the

intent of the parties and their relative knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Underwriters agree that it would not be just and equitable if contributions pursuant to this Section 10 were

to be determined by pro rata allocation or by any other method of allocation that does not take into account the equitable considerations

referred to herein. The amount paid or payable by an indemnified party as a result of the loss, claim, liability, expense, or damage,

or action in respect thereof, referred to above in this Section 10 shall be deemed to include, for the purpose of this Section 10,

any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action

or claim to the extent consistent with Section 9(c). Notwithstanding the foregoing provisions of Section 9 and this Section 10,

the Underwriters shall not be required to contribute any amount in excess of the commissions actually received by it under this Agreement

and no person found guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) will

be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 10,

any person who controls a party to this Agreement within the meaning of the Securities Act, any affiliates of the respective Underwriters

and any officers, directors, partners, employees or agents of the Underwriters or their respective affiliates, will have the same rights

to contribution as that party, and each director of the Company and each officer of the Company who signed the Registration Statement

will have the same rights to contribution as the Company, subject in each case to the provisions hereof. Any party entitled to contribution,

promptly after receipt of notice of commencement of any action against such party in respect of which a claim for contribution may be

made under this Section 10, will notify any such party or parties from whom contribution may be sought, but the omission to so notify

will not relieve that party or parties from whom contribution may be sought from any other obligation it or they may have under this Section 10

except to the extent that the failure to so notify such other party materially prejudiced the substantive rights or defenses of the party

from whom contribution is sought. Except for a settlement entered into pursuant to the last sentence of Section 9(c), no party will

be liable for contribution with respect to any action or claim settled without its written consent if such consent is required pursuant

to Section 9(c).

-25-

11.             Default

of One or More of the Several Underwriters. If, on the First Closing Date or any Option Closing Date, any one or more of the several

Underwriters shall fail or refuse to purchase Offered Shares that it or they have agreed to purchase hereunder on such date, and the aggregate

number of Offered Shares which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase does not exceed 10%

of the aggregate number of the Offered Shares to be purchased on such date, the Representatives may make arrangements satisfactory to

the Company for the purchase of such Offered Shares by other persons, including any of the Underwriters, but if no such arrangements are

made by such date, the other Underwriters shall be obligated, severally and not jointly, in the proportions that the number of Firm Shares

set forth opposite their respective names on Schedule A bears to the aggregate number of Firm Shares set forth opposite

the names of all such non-defaulting Underwriters, or in such other proportions as may be specified by the Representatives with the consent

of the non-defaulting Underwriters, to purchase the Offered Shares which such defaulting Underwriter or Underwriters agreed but failed

or refused to purchase on such date. If, on the First Closing Date or any Option Closing Date, any one or more of the several Underwriters

shall fail or refuse to purchase Offered Shares that it or they have agreed to purchase hereunder on such date, and the aggregate number

of Offered Shares which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase exceeds 10% of the aggregate

number of Offered Shares to be purchased on such date, and arrangements satisfactory to the Representatives and the Company for the purchase

of such Offered Shares are not made within 48 hours after such default, this Agreement shall terminate without liability of any party

to any other party except that the provisions of Section 4, Section 7, Section 9 and Section 10 shall at all times

be effective and shall survive such termination. In any such case either the Representatives or the Company shall have the right to postpone

the First Closing Date or the applicable Option Closing Date, as the case may be, but in no event for longer than seven days in order

that the required changes, if any, to the Registration Statement and the Prospectus or any other documents or arrangements may be effected.

As used in this Agreement,

the term “Underwriter” shall be deemed to include any person substituted for a defaulting Underwriter under this Section 11.

Any action taken under this Section 11 shall not relieve any defaulting Underwriter from liability in respect of any default of such

Underwriter under this Agreement.

12.             Termination

of this Agreement. Prior to the purchase of the Firm Shares by the Underwriters on the First Closing Date, this Agreement may be terminated

by the Representatives by notice given to the Company if at any time: (i) trading or quotation in any of the Company’s securities

shall have been suspended or limited by the Commission or by the Nasdaq, or trading in securities generally on either the Nasdaq or the

NYSE shall have been suspended or limited, or minimum or maximum prices shall have been generally established on any of such stock exchanges;

(ii) a general banking moratorium shall have been declared by any of federal or New York authorities; (iii) there shall have

occurred any outbreak or escalation of national or international hostilities or any crisis or calamity, or any change in the United States

or international financial markets, or any substantial change or development involving a prospective substantial change in United States’

or international political, financial or economic conditions, as in the judgment of the Representatives is material and adverse and makes

it impracticable to market the Offered Shares in the manner and on the terms described in the Time of Sale Prospectus or the Prospectus

or to enforce contracts for the sale of securities; (iv) in the judgment of the Representatives there shall have occurred any change,

or any development or event involving a prospective change, in the condition, financial or otherwise, or in the business, properties,

earnings, results of operations or prospects of the Company and its Subsidiaries considered as one enterprise, whether or not arising

in the ordinary course of business, that would have a Material Adverse Effect; or (v) the Company shall have sustained a loss by

strike, fire, flood, earthquake, accident or other calamity of such character as in the judgment of the Representatives may interfere

materially with the conduct of the business and operations of the Company regardless of whether or not such loss shall have been insured.

Any termination pursuant to this Section 12 shall be without liability on the part of (a) the Company to any Underwriter, except

that the Company shall be obligated to reimburse the expenses of the Representatives and the Underwriters pursuant to Section 4 or

Section 7 hereof or (b) any Underwriter to the Company; provided, however, that the provisions of Section 9

and Section 10 shall at all times be effective and shall survive such termination.

-26-

13.             No

Advisory or Fiduciary Relationship. The Company acknowledges and agrees that (a) the purchase and sale of the Offered Shares

pursuant to this Agreement, including the determination of the public offering price of the Offered Shares and any related discounts and

commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the several Underwriters, on the

other hand, (b) in connection with the offering contemplated hereby and the process leading to such transaction, each Underwriter

is and has been acting solely as a principal and is not the agent or fiduciary of the Company, or its stockholders, or its creditors,

employees or any other party, (c) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the

Company with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether such Underwriter has

advised or is currently advising the Company on other matters) and no Underwriter has any obligation to the Company with respect to the

offering contemplated hereby except the obligations expressly set forth in this Agreement, (d) the Underwriters and their respective

affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company, and (e) the

Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the offering contemplated hereby and the

Company has consulted its own legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

14.             Representations

and Indemnities to Survive Delivery. The respective indemnities, agreements, representations, warranties and other statements of the

Company, its officers and the several Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect,

regardless of any investigation made by or on behalf of any Underwriter or the Company or any of its or their partners, affiliates, officers,

directors or employees or any controlling person, as the case may be, and, anything herein to the contrary notwithstanding, will survive

delivery of and payment for the Offered Shares sold hereunder and any termination of this Agreement.

15.             Notices.

All communications hereunder shall be in writing and shall be mailed, hand delivered or telecopied and confirmed to the parties hereto

as follows:

If to the Representatives:

Leerink Partners LLC

1301 Avenue of the Americas, 5th Floor

New York, New York 10019

Attention: Stuart R. Nayman, Esq.

TD Securities (USA) LLC

1 Vanderbilt Avenue

New York, New York 10017

Attention: Head of Equity Capital Markets, with a copy to CIBLegal@tdsecurities.com

with a copy to:

Wilmer Cutler Pickering Hale and Dorr LLP

250 Greenwich Street

New York, NY 10007

Attention: Lisa Firenze

Facsimile: 212-230-8888

If to the Company:

Celldex Therapeutics, Inc.

Perryville III Building

53 Frontage Road, Suite 220

Hampton, NJ 08827

Attention: President and Chief Executive Officer

Facsimile: 908-454-1911

with a copy to:

Lowenstein Sandler LLP

1251 Avenue of the Americas

New York, NY 10020

Attention: Anthony O. Pergola, Esq.

Facsimile: 973-597-2445

-27-

Each party to this Agreement

may change such address for notices by sending to the parties to this Agreement written notice of a new address for such purpose. Each

such notice or other communication shall be deemed given (i) when delivered personally or by verifiable facsimile transmission (with

an original to follow) on or before 4:30 p.m., New York City time, on a Business Day or, if such day is not a Business Day, on the

next succeeding Business Day, (ii) on the next Business Day after timely delivery to a nationally-recognized overnight courier and

(iii) on the Business Day actually received if deposited in the U.S. mail (certified or registered mail, return receipt requested,

postage prepaid).

16.              Electronic

Notice. An electronic communication (“Electronic Notice”) shall be deemed written notice for purposes of this Section 16

if sent to the electronic mail address specified by the receiving party under separate cover. Electronic Notice shall be deemed received

at the time the party sending Electronic Notice receives verification of receipt by the receiving party. Any party receiving Electronic

Notice may request and shall be entitled to receive the notice on paper, in a nonelectronic form (“Nonelectronic Notice”)

which shall be sent to the requesting party within ten (10) days of receipt of the written request for Nonelectronic Notice.

17.              Successors

and Assigns. This Agreement shall inure to the benefit of and be binding upon the Company and the Underwriters and their respective

successors and the parties referred to in Section 11. References to any of the parties contained in this Agreement shall be deemed

to include the successors and permitted assigns of such party. Nothing in this Agreement, express or implied, is intended to confer upon

any party other than the parties hereto or their respective successors and permitted assigns any rights, remedies, obligations or liabilities

under or by reason of this Agreement, except as expressly provided in this Agreement. Neither party may assign its rights or obligations

under this Agreement without the prior written consent of the other party; provided, however, that each of the

Representatives may assign its rights and obligations hereunder to an affiliate thereof without obtaining the Company’s consent.

18.             Partial

Unenforceability. The invalidity or unenforceability of any section, paragraph or provision of this Agreement shall not affect the

validity or enforceability of any other section, paragraph or provision hereof. If any section, paragraph or provision of this Agreement

is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor

changes) as are necessary to make it valid and enforceable.

19.             Entire

Agreement; Amendment; Severability; Waiver. This Agreement (including all schedules and exhibits attached hereto issued pursuant hereto)

constitutes the entire agreement and supersedes all other prior and contemporaneous agreements and undertakings, both written and oral,

among the parties hereto with regard to the subject matter hereof. Neither this Agreement nor any term hereof may be amended except pursuant

to a written instrument executed by the Company and the Representatives. In the event that any one or more of the provisions contained

herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable as written by a court of competent jurisdiction,

then such provision shall be given full force and effect to the fullest possible extent that it is valid, legal and enforceable, and the

remainder of the terms and provisions herein shall be construed as if such invalid, illegal or unenforceable term or provision was not

contained herein, but only to the extent that giving effect to such provision and the remainder of the terms and provisions hereof shall

be in accordance with the intent of the parties as reflected in this Agreement. No implied waiver by a party shall arise in the absence

of a waiver in writing signed by such party. No failure or delay in exercising any right, power, or privilege hereunder shall operate

as a waiver thereof, nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of

any right, power, or privilege hereunder.

-28-

20.             GOVERNING

LAW AND TIME; WAIVER OF JURY TRIAL. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF

NEW YORK WITHOUT REGARD TO THE PRINCIPLES OF CONFLICTS OF LAWS. SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME. EACH PARTY HEREBY

IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING

OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY.

21.             CONSENT

TO JURISDICTION. EACH PARTY HEREBY IRREVOCABLY SUBMITS TO THE EXCLUSIVE JURISDICTION OF THE STATE AND FEDERAL COURTS SITTING IN THE

CITY OF NEW YORK, BOROUGH OF MANHATTAN, FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH ANY TRANSACTION CONTEMPLATED

HEREBY, AND HEREBY IRREVOCABLY WAIVES, AND AGREES NOT TO ASSERT IN ANY SUIT, ACTION OR PROCEEDING, ANY CLAIM THAT IT IS NOT PERSONALLY

SUBJECT TO THE JURISDICTION OF ANY SUCH COURT, THAT SUCH SUIT, ACTION OR PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT THE VENUE

OF SUCH SUIT, ACTION OR PROCEEDING IS IMPROPER. EACH PARTY HEREBY IRREVOCABLY WAIVES PERSONAL SERVICE OF PROCESS AND CONSENTS TO PROCESS

BEING SERVED IN ANY SUCH SUIT, ACTION OR PROCEEDING BY MAILING A COPY THEREOF (CERTIFIED OR REGISTERED MAIL, RETURN RECEIPT REQUESTED)

TO SUCH PARTY AT THE ADDRESS IN EFFECT FOR NOTICES TO IT UNDER THIS AGREEMENT AND AGREES THAT SUCH SERVICE SHALL CONSTITUTE GOOD AND

SUFFICIENT SERVICE OF PROCESS AND NOTICE THEREOF. NOTHING CONTAINED HEREIN SHALL BE DEEMED TO LIMIT IN ANY WAY ANY RIGHT TO SERVE PROCESS

IN ANY MANNER PERMITTED BY LAW.

22.             Counterparts.

This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall

constitute one and the same instrument. Delivery of an executed Agreement by one party to the other may be made by facsimile, electronic

mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic

Signatures and Records Act or other applicable law, e.g., www.docusign.com) or other transmission method and any counterpart so delivered

shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

23.             Construction.

(a)               the

section and exhibit headings herein are for convenience only and shall not affect the construction hereof;

(b)

words defined in the singular shall have a comparable meaning when used in the plural, and vice versa;

(c)               the words “hereof,” “hereto,” “herein” and “hereunder” and words of similar

import, when used in this Agreement, shall refer to this Agreement as a whole and not to any particular provision of this

Agreement;

(d)

wherever the word “include,” “includes” or “including” is used in this Agreement, it shall be

deemed to be followed by the words “without limitation”;

(e)               references

herein to any gender shall include each other gender;

(f)                references

herein to any law, statute, ordinance, code, regulation, rule or other requirement of any Governmental Authority shall be deemed

to refer to such law, statute, ordinance, code, regulation, rule or other requirement of any Governmental Authority as amended, reenacted,

supplemented or superseded in whole or in part and in effect from time to time and also to all rules and regulations promulgated

thereunder;

-29-

(g)

if the last day for the giving of any notice or the performance of any act required or permitted under this Agreement is a day that

is not a Business Day, then the time for the giving of such notice or the performance of such action shall be extended to the next

succeeding Business Day;

(h)               “knowledge”

means, as it pertains to the Company, the actual knowledge of the officers and directors of the Company, together with the knowledge which

they would have had if they had conducted a reasonable inquiry of the relevant persons into the relevant subject matter;

(i)                “Governmental

Authority” means (i) any federal, provincial, state, local, municipal, national or international government or governmental

authority, regulatory or administrative agency, governmental commission, department, board, bureau, agency or instrumentality, court,

tribunal, arbitrator or arbitral body (public or private); (ii) any self-regulatory organization; or (iii) any political subdivision

of any of the foregoing;

(j)               “Law”

means any and all laws, including all federal, state, local, municipal, national or foreign statutes, codes, ordinances, guidelines, decrees,

rules, regulations and by-laws and all judicial, arbitral, administrative, ministerial, departmental or regulatory judgments, orders,

directives, decisions, rulings or awards or other requirements of any Governmental Authority, binding on or affecting the person referred

to in the context in which the term is used and rules, regulations and policies of any stock exchange on which securities of the Company

are listed for trading; and

(k)              “Business

Day” means any day on which the Nasdaq and commercial banks in the City of New York are open for business.

24.             Recognition

of the U.S. Special Resolution Regimes.

(a)              In

the event that any Underwriter that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer

from such Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent

as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were

governed by the laws of the United States or a state of the United States.

(b)              In

the event that any Underwriter that is a Covered Entity or a BHC Act Affiliate of such Underwriter becomes subject to a proceeding under

a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against such Underwriter are permitted to

be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement

were governed by the laws of the United States or a state of the United States.

For purposes of this Agreement,

(A) “BHC Act Affiliate” has the meaning assigned to the term “affiliate” in, and shall be interpreted

in accordance with, 12 U.S.C. § 1841(k); (B) “Covered Entity” means any of the following: (i) a “covered

entity” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b); (ii) a “covered

bank” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or (iii) a “covered

FSI” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b); (C) “Default Right”

has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as

applicable; and (D) “U.S. Special Resolution Regime” means each of (i) the Federal Deposit Insurance Act

and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and

the regulations promulgated thereunder.

25.             General

Provisions. Each of the parties hereto acknowledges that it is a sophisticated business person who was adequately represented by counsel

during negotiations regarding the provisions hereof, including the indemnification provisions of Section 9 and the contribution provisions

of Section 10, and is fully informed regarding said provisions. Each of the parties hereto further acknowledges that the provisions

of Section 9 and Section 10 hereof fairly allocate the risks in light of the ability of the parties to investigate the Company,

its affairs and its business in order to assure that adequate disclosure has been made in the Registration Statement, any preliminary

prospectus, the Time of Sale Prospectus, each free writing prospectus and the Prospectus (and any amendments and supplements to the foregoing),

as contemplated by the Securities Act and the Exchange Act.

[Signature Page Follows]

-30-

If the foregoing correctly

sets forth the understanding between the Company and the Underwriters, please so indicate in the space provided below for that purpose,

whereupon this letter shall constitute a binding agreement between the Company and the Underwriters.

Very truly yours,

CELLDEX THERAPEUTICS, INC.

By:

/s/ Anthony S. Marucci

Name: Anthony S. Marucci

Title: Chief Executive Officer

ACCEPTED as of the date first-above written:

LEERINK PARTNERS LLC

By:

/s/ Sean Pitt

Name: Sean Pitt

Title: Senior Managing Director

For itself and the other several Underwriters named in Schedule A to this Agreement.

ACCEPTED

as of the date first-above written:

TD SECURITIES (USA) LLC

By:

/s/ Bill Kadel

Name: Bill Kadel

Title: Managing Director

For itself and the other several Underwriters named in Schedule A to this Agreement.

SIGNATURE PAGE

CELLDEX THERAPEUTICS, INC. – UNDERWRITING

AGREEMENT

SCHEDULE A

Underwriters

Number of

Firm Shares

to be Purchased

Leerink Partners LLC

3,310,400

TD Securities (USA) LLC

3,103,500

Guggenheim Securities, LLC

1,448,300

Cantor Fitzgerald & Co.

1,448,300

LifeSci Capital LLC

827,600

H.C. Wainwright & Co., LLC

206,900

Total

10,345,000

SCHEDULE B

Free Writing Prospectuses Included in the

Time of Sale Prospectus

None

SCHEDULE

C

Pricing Information

Firm Shares: 10,345,000

Option Shares: 1,551,750

Price to Public: $29.00

Underwriters’ Discount: $1.74 per share

EX-5.1 — EXHIBIT 5.1

EX-5.1

Filename: tm267111d2_ex5-1.htm · Sequence: 3

Exhibit 5.1

April 2, 2026

Celldex Therapeutics, Inc.

Perryville III Building

53 Frontage Road, Suite 220

Hampton, NJ 08827

Ladies and Gentlemen:

We

have acted as counsel to Celldex Therapeutics, Inc., a Delaware corporation (the “Company”), in connection with

(i) the preparation and filing of the Registration Statement on Form S-3 (Registration No. 333-275300) filed with the Securities

and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”)

(as so filed, the “Registration Statement”) and the related prospectus contained in the Registration Statement (the

“Base Prospectus”) and (ii) the preparation and filing of the prospectus supplement, dated April 1, 2026

(the “Prospectus Supplement”) relating to the issuance and sale by the Company of up to 11,896,750

shares of common stock, par value $0.001 per share (the “Common

Stock”) of the Company (the “Shares”) (including 1,551,750 shares

of Common Stock issuable by the Company upon exercise of an option granted by the Company to the underwriters).

The Shares are to be

issued and sold by the Company pursuant to the Underwriting Agreement, dated as of April 1, 2026 (the “Underwriting

Agreement”), between the Company and Leerink Partners LLC and TD Securities (USA) LLC, as representatives of the several underwriters named therein,

the form of which is being filed with the Commission as Exhibit 1.1 to the Company’s Current Report on Form 8-K,

filed on the date hereof.

In connection with this opinion,

we have (i) investigated such questions of law, (ii) examined originals or certified, conformed or reproduction copies of such

agreements, instruments, documents and records of the Company, such certificates of public officials and such other documents and (iii) received

such information from officers and representatives of the Company as we have deemed necessary or appropriate for the purposes of this

opinion.

In all such examinations,

we have assumed the legal capacity of all natural persons, the genuineness of all signatures, the authenticity of original and certified

documents and the conformity to original or certified documents of all copies submitted to us as conformed or reproduction copies. As

to various questions of fact relevant to the opinion expressed herein, we have relied upon, and assume the accuracy of, the representations

and warranties set forth in the Underwriting Agreement, and certificates and oral or written statements and other information of or from

public officials and officers and representatives of the Company.

Based upon the foregoing and

subject to the limitations, qualifications and assumptions set forth herein, we are of the opinion that the Shares have been duly authorized

for issuance, and when issued and paid for in accordance with the terms and conditions of the Underwriting Agreement, the Shares will

be validly issued, fully paid and non-assessable.

The opinion expressed herein

is limited to the applicable provisions of the General Corporation Law of the State of Delaware (the “DGCL”), as currently

in effect, and reported judicial decisions interpreting such provisions of the DGCL.

The opinion expressed herein

is limited to the matters stated herein and no opinion is implied or may be inferred beyond the matters expressly stated herein. We undertake

no obligation to supplement this letter if any applicable laws change after the date hereof or if we become aware of any facts that might

change the opinion expressed herein after that date or for any other reason.

We hereby consent to the filing

of this opinion as Exhibit 5.1 to the Current Report on Form 8-K filed by the Company on the date hereof and which is incorporated

by reference into the Registration Statement and to the references to this firm under the caption “Legal Matters” in the Prospectus

Supplement. In giving these consents, we do not admit that we are “experts” within the meaning of Section 11 of the Securities

Act or within the category of persons whose consent is required by Section 7 of the Securities Act.

Very truly yours,

/s/ Lowenstein Sandler LLP

Lowenstein Sandler LLP

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm267111d2_ex99-1.htm · Sequence: 4

Exhibit 99.1

Celldex Announces Proposed Public Offering

of Common Stock

HAMPTON,

N.J., April 1, 2026 (GLOBE NEWSWIRE) -- Celldex Therapeutics, Inc. (“Celldex” or the

“Company”) (Nasdaq: CLDX) today announced that it has commenced an underwritten public offering for the sale of shares

of its common stock. In addition, Celldex expects to grant the underwriters a 30-day option to purchase up to an

additional 15% of the shares of its common stock offered in the offering. All of the shares of common stock are being offered by the Company. The

final terms of the offering will depend on market and other conditions at the time of pricing, and there can be no assurance as to

whether or when the offering may be completed, or as to the actual size or terms of the offering.

Celldex currently intends to use the net proceeds

of this offering, together with our existing cash, cash equivalents, and marketable securities, (i) to fund ongoing commercial readiness

activities and the commercial launch of barzolvolimab, if approved, for the treatment of CSU in the United States, (ii) to continue

the clinical and preclinical development of our product candidates, including current and future development of barzolvolimab, (iii) to

grow our bispecific antibody platform and clinical candidates, (iv) to fund ongoing efforts to develop additional clinical pipeline

product candidates and (v) for general corporate purposes.

Leerink Partners and TD Cowen are

acting as joint bookrunning managers for the proposed offering.

The

securities described above will be offered pursuant to a shelf registration statement on Form S-3 (File No. 333-275300), which was previously

filed with the Securities and Exchange Commission (“SEC”) and became automatically effective on November 3,

2023. This offering will be made only by means of a prospectus supplement and accompanying prospectus that form a part of the registration

statement. A preliminary prospectus supplement relating to and describing the terms of the offering will be filed with the SEC and

will be available on the SEC’s website located at http://www.sec.gov,

copies of which may be obtained, when available, for free by contacting Leerink Partners LLC, Syndicate Department, 53 State Street,

40th Floor, Boston, MA 02109, or by telephone at (800) 808-7525 ext. 6105 or by email at syndicate@leerink.com or TD

Securities (USA) LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by email at TDManualrequest@broadridge.com.

The final terms of the offering will be disclosed in a final prospectus supplement to be filed with the SEC.

This press release does not constitute an offer

to sell or the solicitation of an offer to buy any of the securities described herein, nor shall there be any sale of these securities

in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification

under the securities laws of any such state or other jurisdiction.

About Celldex

Celldex is a clinical

stage biotechnology company leading the science at the intersection of mast cell biology and the development of transformative therapeutics

for patients. Our pipeline includes antibody-based therapeutics which have the ability to engage the human immune system and/or directly

affect critical pathways to improve the lives of patients with severe inflammatory, allergic, autoimmune and other devastating diseases.

Forward Looking Statement

This release contains “forward-looking statements” made pursuant to the safe harbor provisions of the Private Securities Litigation

Reform Act of 1995. These statements are typically preceded by words such as “believes,” “expects,” “anticipates,”

“intends,” “will,” “may,” “should,” or similar expressions. These forward-looking statements

reflect management’s current knowledge, assumptions, judgment and expectations regarding future performance or events. Although

management believes that the expectations reflected in such statements are reasonable, they give no assurance that such expectations will

prove to be correct or that those goals will be achieved, and you should be aware that actual results could differ materially from those

contained in the forward-looking statements. Forward-looking statements are subject to a number of risks and uncertainties, including,

but not limited to, risks associated with market conditions and the satisfaction of customary closing conditions related to the offering

and uncertainties related to the Company’s expectations regarding the completion, timing and size of the proposed offering. For

a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking

statements, as well as risks relating to the Company’s business in general, please refer to the Company’s preliminary prospectus

supplement to be filed with the SEC, and the documents incorporated by reference therein, including the Company’s Form 10-K

for the year ended December 31, 2025.

All forward-looking statements

are expressly qualified in their entirety by this cautionary notice. You are cautioned not to place undue reliance on any forward-looking

statements, which speak only as of the date of this release. We have no obligation, and expressly disclaim any obligation, to update,

revise or correct any of the forward-looking statements, whether as a result of new information, future events or otherwise.

Company Contact

Sarah Cavanaugh

Senior Vice President, Corporate Affairs & Administration

Celldex Therapeutics, Inc.

(508) 864-8337

scavanaugh@celldex.com

Patrick Till

Meru Advisors

(484) 788-8560

ptill@meruadvisors.com

EX-99.2 — EXHIBIT 99.2

EX-99.2

Filename: tm267111d2_ex99-2.htm · Sequence: 5

Exhibit 99.2

Celldex

Announces Pricing of $300 Million Public Offering of Common Stock

HAMPTON, N.J., April 1,

2026 (GLOBE NEWSWIRE) -- Celldex Therapeutics, Inc. (“Celldex” or the “Company”) (Nasdaq:

CLDX) today announced the pricing of an underwritten public offering of 10,345,000 shares of its common stock at a public offering price

of $29.00 per share. All of the shares to be sold in the offering are to be sold by Celldex. In connection with the offering, Celldex

has also granted the underwriters a 30-day option to purchase up to an additional 1,551,750 shares of common stock at the public offering

price, less the underwriting discounts and commissions. The Company expects to receive gross proceeds from the offering, excluding the

exercise of the underwriters’ option, if any, of approximately $300 million, excluding the underwriting discounts and commissions

and other offering-related expenses. The offering is expected to close on or about April 6, 2026, subject to customary closing

conditions.

Celldex intends

to use the net proceeds of this offering, together with our existing cash, cash equivalents, and marketable securities, (i) to fund

ongoing commercial readiness activities and the commercial launch of barzolvolimab, if approved, for the treatment of CSU in the United

States, (ii) to continue the clinical and preclinical development of our product candidates, including current and future development

of barzolvolimab, (iii) to grow our bispecific antibody platform and clinical candidates, (iv) to fund ongoing efforts to develop

additional clinical pipeline product candidates and (v) for general corporate purposes.

Leerink Partners,

TD Cowen, Guggenheim Securities and Cantor are acting as joint bookrunning managers for the offering. LifeSci Capital and H.C. Wainwright &

Co. are acting as co-lead managers for the offering.

The

offering is being made pursuant to a shelf registration statement on Form S-3 (File No. 333-275300), which was previously filed

with the Securities and Exchange Commission (“SEC”) and became automatically effective on November 3, 2023.

This offering is being made only by means of a prospectus supplement and accompanying base prospectus that form a part of the registration

statement. A preliminary prospectus supplement relating to and describing the terms of the offering has been filed with the SEC and may

be obtained for free by visiting the SEC’s website at www.sec.gov. A final prospectus supplement relating to the offering will

be filed with the SEC and will be available on the SEC’s website located at http://www.sec.gov. When

available, copies of the final prospectus supplement and the accompanying base prospectus may be obtained for free by contacting Leerink

Partners LLC, Syndicate Department, 53 State Street, 40th Floor, Boston, MA 02109, or by telephone at (800) 808-7525 ext. 6105 or by

email at syndicate@leerink.com or TD Securities

(USA) LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by email at TDManualrequest@broadridge.com.

This press release

does not constitute an offer to sell or the solicitation of an offer to buy any of the securities described herein, nor shall there be

any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to

the registration or qualification under the securities laws of any such state or other jurisdiction.

About Celldex

Celldex

is a clinical stage biotechnology company leading the science at the intersection of mast cell biology and the development of transformative

therapeutics for patients. Our pipeline includes antibody-based therapeutics which have the ability to engage the human immune system

and/or directly affect critical pathways to improve the lives of patients with severe inflammatory, allergic, autoimmune and other devastating

diseases.

Forward

Looking Statement

This release contains “forward-looking statements” made pursuant to the safe harbor provisions of the Private Securities

Litigation Reform Act of 1995. These statements are typically preceded by words such as “believes,” “expects,”

“anticipates,” “intends,” “will,” “may,” “should,” or similar expressions.

These forward-looking statements reflect management’s current knowledge, assumptions, judgment and expectations regarding future

performance or events. Although management believes that the expectations reflected in such statements are reasonable, they give no assurance

that such expectations will prove to be correct or that those goals will be achieved, and you should be aware that actual results could

differ materially from those contained in the forward-looking statements. Forward-looking statements are subject to a number of risks

and uncertainties, including, but not limited to, risks associated with market conditions and the satisfaction of customary closing conditions

related to the offering. For a further description of the risks and uncertainties that could cause actual results to differ from those

expressed in these forward-looking statements, as well as risks relating to the Company’s business in general, please refer to

the Company’s preliminary prospectus supplement filed with the SEC, and the documents incorporated by reference therein, including

the Company’s Form 10-K for the year ended December 31, 2025.

All

forward-looking statements are expressly qualified in their entirety by this cautionary notice. You are cautioned not to place undue

reliance on any forward-looking statements, which speak only as of the date of this release. We have no obligation, and expressly disclaim

any obligation, to update, revise or correct any of the forward-looking statements, whether as a result of new information, future events

or otherwise.

Company Contact

Sarah Cavanaugh

Senior Vice President, Corporate Affairs & Administration

Celldex Therapeutics, Inc.

(508) 864-8337

scavanaugh@celldex.com

Patrick Till

Meru Advisors

(484) 788-8560

ptill@meruadvisors.com

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