Form 8-K

8-K — Replimune Group, Inc.

Accession: 0001104659-26-108243

Filed: 2026-09-16

Period: 2026-09-15

CIK: 0001737953

SIC: 2836 (BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES))

Item: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Item: Submission of Matters to a Vote of Security Holders

Item: Financial Statements and Exhibits

Documents

8-K — tm2625488d1_8k.htm (Primary)

EX-3.1 — EXHIBIT 3.1 (tm2625488d1_ex3-1.htm)

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2026-09-15

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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): September 15, 2026

REPLIMUNE GROUP, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-38596

82-2082553

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification Number)

500

Unicorn Park Drive

Suite 303

Woburn, MA 01801

(Address of principal executive offices, including Zip Code)

Registrant’s telephone number, including

area code: (781) 222-9600

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 $0.001 per share

REPL

The Nasdaq Stock Market LLC

(Nasdaq Global Select Market)

Indicate

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

(§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this

chapter). 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 5.03 Amendments to Articles of Incorporation or Bylaws; Change

in Fiscal Year.

On September

15, 2026, Replimune Group, Inc. (the “Company”) held its annual meeting of stockholders (the “Annual Meeting”)

to consider and vote on the three proposals, each of which is described in greater detail in the Company’s definitive proxy statement

on Schedule 14A filed with the U.S. Securities and Exchange Commission on July 29, 2026.

the Annual Meeting, the Company’s stockholders approved an amendment to the Third Amended

and Restated Certificate of Incorporation of the Company to increase the number of authorized shares of common stock, par value $0.001

per share, from 150,000,000 shares to 300,000,000 shares (the “Amendment”). The Company’s Board of Directors previously

approved the Amendment, subject to shareholder approval at the Annual Meeting and the filing by the Company of a certificate of amendment

(the “Certificate of Amendment”) with the Secretary of State of the State of Delaware.

September 15, 2026, the Company filed the Certificate of Amendment to The Third Amended and Restated Certificate of Incorporation of the

Company with the Secretary of State of the State of Delaware to effect the Amendment, which became effective immediately upon such filing.

The

foregoing description of the Certificate of Amendment does not purport to be complete and is qualified in its entirety by reference to

the full text of the Certificate of Amendment, which is filed with this Current Report on Form 8-K as Exhibit 3.1 and is incorporated

herein by reference.

Item 5.07 Submission of Matters to a Vote of Security Holders.

The final voting results on each of the matters submitted to a vote

of stockholders at the Annual Meeting are set forth below.

(1) Proposal No. 1 – Ratification of Selection of Independent Registered Public Accounting Firm: The selection

of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending March 31,

2027 was ratified.

Votes For

Votes Against

Votes Abstaining

63,434,745

253,953

71,239

(2) Proposal No. 2 – Say on Pay Proposal:

The compensation of the Company’s named executive officers for the fiscal year ended March 31, 2026 was

approved on a non-binding advisory basis.

Votes For

Votes Against

Votes Abstaining

Broker Non-Votes

48,641,528

622,710

55,371

14,440,328

(3) Proposal No. 3 – Approval of an amendment to the Third Amended and Restated

Certificate of Incorporation of the Company to increase the number of authorized shares of common stock, par value $0.001 per share, from

150,000,000 shares to 300,000,000 shares: The proposal to approve an amendment to the Third Amended and Restated Certificate of

Incorporation of the Company to increase the number of authorized shares of common stock, par value $0.001 per share, from 150,000,000

shares to 300,000,000 shares was approved by the Company’s stockholders.

Votes For

Votes Against

Votes Abstaining

62,153,709

1,526,174

80,054

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit

Description

3.1

Certificate

of Amendment to the Third Amended and Restated Certificate of Incorporation of Replimune Group, Inc., as filed with the Secretary

of State of the State of Delaware on September 15, 2026.

104

Cover Page Interactive Data File (embedded within the Inline

XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934,

as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

REPLIMUNE GROUP, INC.

Date: September 16, 2026

By:

/s/ Sushil Patel

Sushil Patel

Chief Executive Officer

EX-3.1 — EXHIBIT 3.1

EX-3.1

Filename: tm2625488d1_ex3-1.htm · Sequence: 2

EXHIBIT 3.1

CERTIFICATE OF AMENDMENT

THE THIRD AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

REPLIMUNE GROUP, INC.

(Pursuant to Section 242 of the

General Corporation Law of the State of Delaware)

Replimune Group, Inc., a corporation organized and

existing under the General Corporation Law of the State of Delaware as set forth in Title 8 of the Delaware Code (the “DGCL”),

hereby certifies as follows:

1. The name of this corporation is Replimune Group, Inc. (the “Corporation”).

2. The original Certificate of Incorporation of the Corporation was filed with the Secretary of State of the State of Delaware on July 5,

2017. The Corporation’s Third Amended and Restated Certificate of Incorporation, as amended and restated from time to time, was

most recently filed with the Secretary of State of the State of Delaware on July 24, 2018 (the “Restated Certificate”).

3. Article Four, Section 1 of the Restated Certificate is hereby amended and restated in its entirety to read as follows:

Section 1. Authorized Shares. The total number

of shares of all classes of capital stock which the Corporation shall have authority to issue is Three Hundred Ten Million (310,000,000)

shares, consisting of:

(a) Three Hundred Million (300,000,000) shares of common stock, par value $0.001 per share (“Common Stock”); and

(b) Ten Million (10,000,000) shares of undesignated preferred stock, par value $0.001 per share (the “Preferred Stock”).

Such stock may be issued from time to time by the Corporation

for such consideration as may be fixed by the board of directors of the Corporation (the “Board of Directors”).

The following is a statement of the powers, designations, preferences, privileges, and relative rights in respect of each class of capital

stock of the Corporation.

4. This Certificate of Amendment to the Third Amended and Restated Certificate of Incorporation has been duly adopted by the Corporation’s

Board of Directors and stockholders in accordance with the applicable provisions of Sections 141 and 242 of the DGCL.

[The remainder of this page intentionally left

blank]

IN WITNESS WHEREOF, the Corporation has caused

this Certificate of Amendment to be duly adopted and executed in its corporate name and on its behalf by its duly authorized officer this

15th day of September, 2026.

Replimune Group,

Inc.

By:

/s/ Sushil Patel

Name:

Sushil Patel

Title:

Chief Executive Officer

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