Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — Seer, Inc.

Accession: 0001193125-26-152998

Filed: 2026-04-13

Period: 2026-04-13

CIK: 0001726445

SIC: 3826 (LABORATORY ANALYTICAL INSTRUMENTS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — ck0001726445-20260413.htm (Primary)

EX-99.1 (ck0001726445-ex99_1.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: ck0001726445-20260413.htm · Sequence: 1

8-K

0001726445false00017264452026-04-132026-04-13

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 13, 2026

Seer, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001-39747

82-1153150

(State or other jurisdiction of

(Commission

(I.R.S. Employer

incorporation)

File Number)

Identification No.)

3800 Bridge Parkway, Suite 102

Redwood City, California 94065

(Address of principal executive offices, including zip code)

650-453-0000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last reports)

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

Name of each exchange on which registered

Class A Common Stock, par value $0.00001 per share

SEER

The NASDAQ Stock Market LLC

(The 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 8.01

Other Events.

On April 13, 2026, Seer, Inc. issued a press release concerning the highly contingent, non-binding and unsolicited acquisition proposal and director candidate nominations received from Bradley L. Radoff, Michael Torok and certain of their affiliates.

A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01

Financial Statements and Exhibits.

Exhibit No.

Description

99.1

Press Release dated April 13, 2026, titled “Seer Confirms Receipt of Unsolicited Proposal and Director Candidate Nominations from Radoff-JEC Group.”

104

Cover Page from this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

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.

SEER, INC.

Date: April 13, 2026

By:

/s/ David Horn

David Horn

President and Chief Financial Officer

EX-99.1

EX-99.1

Filename: ck0001726445-ex99_1.htm · Sequence: 2

EX-99.1

Exhibit 99.1

Seer Confirms Receipt of Unsolicited Proposal and Director Candidate Nominations from Radoff-JEC Group

No Stockholder Action Required at This Time

REDWOOD CITY, Calif. – April 13, 2026 – Seer, Inc. (Nasdaq: SEER) (“Seer” or the “Company”), the pioneer and trusted partner for deep, unbiased proteomic insights, today confirmed that it has received a highly contingent, non-binding and unsolicited proposal from Bradley L. Radoff and Michael Torok (together with certain of their affiliates, the “Radoff-JEC Group”) to acquire all of the outstanding shares of Seer’s Class A common stock for $2.25 per share in cash plus a contingent value right (the “Proposal”).

Consistent with its fiduciary duties and in consultation with its independent financial and legal advisors, the Seer Board of Directors (the “Board”) will carefully review and consider the Proposal to determine the course of action that it believes is in the best interests of the Company and all Seer stockholders.

In addition, Radoff-JEC Group has nominated three director candidates to stand for election to the Board at the Company’s 2026 Annual Meeting of Stockholders (the “2026 Annual Meeting”). The Corporate Governance and Nominating Committee of the Board will review the proposed nominees in accordance with the Company’s bylaws.

The Board will present its formal recommendation regarding the Radoff-JEC Group’s director nominations in the Company’s definitive proxy statement, to be filed with the Securities and Exchange Commission and mailed to all stockholders eligible to vote at the 2026 Annual Meeting. The date of the 2026 Annual Meeting has not yet been announced.

No stockholder action is required at this time.

Perella Weinberg Partners LP is serving as financial advisor to Seer and Wilson Sonsini Goodrich & Rosati, Professional Corporation is serving as legal counsel.

About Seer, Inc.

Seer, Inc. (Nasdaq: SEER) sets the standard in deep, unbiased proteomics, delivering insights with a scale, speed, precision and reproducibility previously unattainable. Seer’s Proteograph® Product Suite integrates proprietary engineered nanoparticles, streamlined automation instrumentation, optimized consumables and advanced analytical software to overcome the limitations of traditional proteomic methods. Seer’s products are for research use only and are not intended for diagnostic procedures. For more information, visit www.seer.bio.

For more information, please email us at pr@seer.bio.

Additional Information and Where to Find It

Seer, its directors and certain executive officers are participants in the solicitation of proxies from stockholders in connection with Seer’s 2026 Annual Meeting of Stockholders (the “Annual Meeting”). Seer plans to file a proxy statement (the “2026 Proxy Statement”) with the Securities and Exchange Commission (the “SEC”) in connection with the solicitation of proxies for the Annual Meeting.

Omid Farokhzad, Meeta Gulyani, Robert Langer, Terrance McGuire, Deep Nishar, Isaac Ro and Nicolas Roelofs, all of whom are members of Seer’s board of directors, and David Horn, Seer’s president and chief financial officer, are participants in Seer’s solicitation. Additional information regarding such participants, including their direct or indirect interests, by security holdings or otherwise, will be included in the 2026 Proxy Statement and other relevant documents to be filed by Seer with the SEC in connection with the Annual Meeting. Information relating to the foregoing can also be found in Seer’s definitive proxy statement for its 2025 Annual Meeting of Stockholders (the “2025 Proxy Statement”), which was filed with the SEC on May 28, 2025, and is available here. Particular attention is directed to the sections of the 2025 Proxy Statement captioned “Board of Directors and Corporate Governance,” “Executive Compensation,” “Named Executive Officer Compensation Overview,” “Security Ownership of Certain Beneficial Owners and Management” and “Certain Relationships, Related Party and Other Transactions.” To the extent that holdings of such participants in Seer’s securities have changed since the amounts printed in the 2025 Proxy Statement, such changes have been reflected on the following filings: for Mr. Farokhzad, on May 22, 2025, August 21, 2025, November 21, 2025, December 11, 2025, February 5, 2026, and February 19, 2026; for Ms. Gulyani, on July 9, 2025; for Mr. Langer, on July 9, 2025; for Mr. McGuire, on July 9, 2025 and December 11, 2025; for Mr. Nishar, on June 16, 2025 and July 9, 2025; for Mr. Ro, on September 3, 2025; for Mr. Roelofs, on July 9, 2025; and for Mr. Horn, on May 22, 2025; August 21, 2025; November 21, 2025, February 5, 2026, and February 19, 2026.

Promptly after filing its definitive 2026 Proxy Statement with the SEC, Seer will mail the definitive 2026 Proxy Statement and a BLUE proxy card to each stockholder entitled to vote at the Annual Meeting. STOCKHOLDERS ARE URGED TO READ THE 2026 PROXY STATEMENT (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND ANY OTHER RELEVANT DOCUMENTS THAT SEER WILL FILE WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Stockholders may obtain, free of charge, Seer’s proxy statement (in both preliminary and definitive form), any amendments or supplements thereto, and any other relevant documents filed by Seer with the SEC in connection with the Annual Meeting at the SEC’s website, which is located here. Copies of Seer’s definitive 2026 Proxy Statement, any amendments or supplements thereto, and any other relevant documents filed by Seer with the SEC in connection with the Annual Meeting will also be available, free of charge, at Seer’s website, which is located here, or by writing to Investor Relations, Seer, Inc., 3800 Bridge Parkway, Suite 102, Redwood City, CA 94065.

Forward Looking Statements

This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. Such forward-looking statements are based on Seer’s beliefs and assumptions and on information currently available to it on the date of this press release. Forward-looking statements may involve known and unknown risks, uncertainties and other factors that may cause Seer’s actual results, performance, or achievements to be materially different from those expressed or implied by the forward-looking statements. These statements include but are not limited to statements regarding the actions to be taken by the Board. These and other risks are described more fully in Seer’s filings with the SEC and other documents that Seer subsequently files with the SEC from time to time. Except to the extent required by law, Seer undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.

Media Contact:

Patrick Schmidt

pr@seer.bio

Joele Frank, Wilkinson Brimmer Katcher

Eric Brielmann / Joseph Sala

(212) 355-4449

Investor Contact:

Marissa Bych

investor@seer.bio

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 5

v3.26.1

Document and Entity Information

Apr. 13, 2026

Cover [Abstract]

Document Type

8-K

Document Period End Date

Apr. 13, 2026

Entity Registrant Name

Seer, Inc.

Entity File Number

001-39747

Entity Incorporation, State or Country Code

DE

Entity Tax Identification Number

82-1153150

Entity Address, Address Line One

3800 Bridge Parkway

Entity Address, Address Line Two

Suite 102

Entity Address, City or Town

Redwood City

Entity Address, State or Province

CA

Entity Address, Postal Zip Code

94065

City Area Code

650

Local Phone Number

453-0000

Written Communications

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Class A Common Stock, par value $0.00001 per share

Trading Symbol

SEER

Security Exchange Name

NASDAQ

Entity Emerging Growth Company

false

Entity Central Index Key

0001726445

Amendment Flag

false

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 2 such as Street or Suite number

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine2

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration