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SERA PROGNOSTICS, INC.

For the period ended Dec 31, 2025. Filed Mar 18, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 18, 2026

SERA$1.99-9.1%Stored close · as of Nov 10, 2026

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Contents

Item 15. Exhibits and Financial Statement Schedules

(a)

Documents Filed as Part of This Annual Report

(1)

Financial Statements

See “Index to Financial Statements” at Item 8 to this Annual Report.

(2)

Financial Statement Schedules

Financial statement schedules have been omitted because they are not applicable or because the required information is included in the financial statements and accompanying notes included in this Annual Report.

(3)

Exhibits

ExhibitNumberDescription
3.1Amended and Restated Certificate of Incorporation of Sera Prognostics, Inc., as amended (incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K (File No. 001-40606) filed with the SEC on July 20, 2021).
3.2Certificate of Amendment to Amended and Restated Certificate of Incorporation of Sera Prognostics, Inc., dated June 9, 2023 (incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K (File No. 001-40606) filed with the SEC on June 14, 2023).
3.3Amended and Restated Bylaws of Sera Prognostics, Inc. (incorporated by reference to Exhibit 3.2 of the Registrant’s Current Report on Form 8-K (File No. 001-40606) filed with the SEC on July 20, 2021).
4.1Specimen Class A Common Stock Certificate (incorporated by reference to Exhibit 4.1 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-257038) filed with the SEC on July 8, 2021).
4.2Form of Common Stock Purchase Warrant – I (incorporated by reference to Exhibit 4.2 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
4.3Form of Common Stock Purchase Warrant – II (incorporated by reference to Exhibit 4.3 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
4.4Form of Series E Warrant (incorporated by reference to Exhibit 4.4 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
4.5Fourth Amended and Restated Investors’ Rights Agreement, dated as of February 23, 2021 (incorporated by reference to Exhibit 4.5 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
4.6Description of Securities (incorporated by reference to Exhibit 4.6 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
4.7Form of Pre-Funded Warrant (incorporated by reference to Exhibit 4.1 of the Registrant's Current Report on Form 8-K (File No. 001-40606) filed with the SEC on February 12, 2025).
5.1*Opinion of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. with respect to the legality of the securities being registered.
10.1Form of Indemnification Agreement (incorporated by reference to Exhibit 10.1 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-257038) filed with the SEC July 8, 2021).
10.2+2021 Equity Incentive Plan (incorporated by reference to Exhibit 10.3 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-257038) filed with the SEC on July 8, 2021).
10.3+Form of 2021 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.4 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-257038) filed with the SEC on July 8, 2021).
10.4+Non-Employee Director Compensation Policy (incorporated by reference to Exhibit 10.4 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024.
10.5†Commercial Collaboration Agreement, dated as of February 17, 2021, by and between Anthem, Inc. and the Registrant (incorporated by reference to Exhibit 10.5 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.6†Laboratory Services Agreement, effective as of November 10, 2020, by and among Anthem Health Insurance and Amerigroup Corporation and the Registrant (incorporated by reference to Exhibit 10.6 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.7†Side Letter with Baker Bros. Advisors LP, dated as of April 29, 2021, by and between Baker Bros. Advisors LP and the Registrant (incorporated by reference to Exhibit 10.8 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.8†Amendment No. 1, dated February 16, 2023, to Side Letter with Baker Bros. Advisors LP, dated as of April 29, 2021, by and between Baker Bros. Advisors LP and the Registrant (incorporated by reference to Exhibit 10.8 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 22, 2023).
10.9†Amendment No. 2, dated December 6, 2023, to Side Letter with Baker Bros. Advisors LP, dated as of April 29, 2021, by and between Baker Bros. Advisors LP and the Registrant (incorporated by reference to Exhibit 10.7.2 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024).
10.10+Consulting Agreement by and between the Registrant and Douglas Fisher, dated January 10, 2022 (incorporated by reference to Exhibit 10.11 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
10.11.1+Employment Agreement by and between the Registrant and John J. Boniface, dated March 14, 2012 (incorporated by reference to Exhibit 10.13 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.11.2+Amendment to Employment Agreement by and between the Registrant and John J. Boniface, dated March 18, 2024 (incorporated by reference to Exhibit 10.13 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024).
10.11.3*+Amended and Restated Employment Agreement by and between the Registrant and John J. Boniface, dated March 13, 2026.
10.12.1+Employment Agreement by and between the Registrant and Benjamin Jackson, dated April 13, 2021 (incorporated by reference to Exhibit 10.16 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.12.2+Amendment to Employment Agreement by and between the Registrant and Benjamin Jackson, dated May 20, 2021 (incorporated by reference to Exhibit 10.15 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
10.12.3+Amendment to Employment Agreement by and between the Registrant and Benjamin Jackson, dated March 18, 2024 incorporated by reference to Exhibit 10.16 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024).
10.12.4*+Amended and Restated Employment Agreement by and between the Registrant and Benjamin Jackson, dated March 13, 2026.
10.13.1+Employment Agreement by and between the Registrant and Paul Kearney, dated October 1, 2021 (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on November 9, 2021).
10.13.2+Amendment to Employment Agreement by and between the Registrant and Paul Kearney, dated March 18, 2024 (incorporated by reference to Exhibit 10.18 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024.
10.13.3*+Amended and Restated Employment Agreement by and between the Registrant and Paul Kearney, dated March 13, 2026.
10.14.1+Employment Agreement by and between the Registrant and Robert Gardner Harrison, dated March 30, 2021 (incorporated by reference to Exhibit 10.19 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
10.14.2+Amendment to Employment Agreement by and between the Registrant and Robert Gardner Harrison, dated May 20, 2021 (incorporated by reference to Exhibit 10.20 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
10.14.3+Amendment to Employment Agreement by and between the Registrant and Robert Gardner Harrison, dated March 18, 2024 (incorporated by reference to Exhibit 10.23 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024).
10.14.4*+Amended and Restated Employment Agreement by and between the Registrant and Robert Gardner Harrison, dated March 17, 2026.
10.15.1+Employment Agreement by and between the Registrant and Evguenia (Zhenya) Lindgardt, dated November 6, 2023 (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on November 8, 2023).
10.15.2*+Amended and Restated Employment Agreement by and between the Registrant and Evguenia (Zhenya) Lindgardt, dated March 16, 2026.
10.16.1+Employment Agreement by and between the Registrant and Austin Aerts, dated November 6, 2023 (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on November 8, 2023).
10.16.2+Amendment to Employment Agreement by and between the Registrant and Austin Aerts, dated March 18, 2024 (incorporated by reference to Exhibit 10.28 of the Registrant’s Annual Report on Form 10-K (File No. 40606) filed with the SEC on March 20, 2024).
10.16.3*+Amended and Restated Employment Agreement by and between the Registrant and Austin Aerts, dated March 16, 2026.
10.17.1+Employment Agreement by and between the Registrant and Lee Anderson, dated May 19, 2025 (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on August 6, 2025).
10.17.2*+Amended and Restated Employment Agreement by and between the Registrant and Lee Anderson, dated March 14, 2026.
10.18.1*+Employment Agreement by and between the Registrant and Tiffany Inglis, M.D., effective as of October 1, 2025.
10.18.2*+Amended and Restated Employment Agreement by and between the Registrant and Tiffany Inglis, M.D., dated March 16, 2026.
10.19+Consulting Agreement by and between the Registrant and Marcus Wilson, dated June 4, 2025 (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on August 6, 2025).
10.20+Form of Restricted Stock Unit Agreement under the Registrant’s 2021 Equity Incentive Plan (incorporated by reference to Exhibit 10.29 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 20, 2024).
10.21Lease Agreement, effective as of August 1, 2017, by and between Eastland Regency, L.C. and the Registrant (incorporated by reference to Exhibit 10.20 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
10.22First Amendment to Lease, effective as of June 7, 2021, by and between Eastland Regency, L.C. and the Registrant (incorporated by reference to Exhibit 10.22 of the Registrant’s Annual Report on Form 10-K (File No. 001-40606) filed with the SEC on March 29, 2022).
10.23Second Amendment to Lease, effective October 10, 2022, by and between Eastland Regency, L.C. and the Registrant (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on November 9, 2022).
10.24Third Amendment to Lease, effective as of July 25, 2023, by and between Eastland Regency, L.C. and the Registrant (incorporated by reference to Exhibit 10.3 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on August 9, 2023).
10.25Fourth Amendment to Lease, effective as of September 22, 2025, by and between Eastland Regency, L.C. and the Registrant (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File No. 001-40606) filed with the SEC on November 13, 2025).
10.26*Sales Agreement, dated March 18, 2026, by and between Sera Prognostics, Inc. and William Blair & Company, L.L.C.
19.1*Insider Trading Policy
21.1Subsidiaries of the Registrant (incorporated by reference to Exhibit 21.1 of the Registrant’s Registration Statement on Form S-1 (File No. 333-257038) filed with the SEC on June 11, 2021).
23.1*Consent of Independent Registered Public Accounting Firm
23.2*Consent of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. (included in the opinion filed as Exhibit 5.1).
24.1*Power of Attorney (included on signature page)
31.1*Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**Certification of Principal Executive Officer and Principal Financial Officer and Principal Accounting Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
97.1+Clawback Policy of the Registrant (incorporated by reference to Exhibit 97.1 of the Registrant’s Annual Report on Form 10-K (File No. 333-40606) filed with the SEC on March 20, 2024).
101.INSInline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.
101.SCHInline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents
104Cover Page Interactive Data File (embedded within the Inline XBRL document)
  • Filed herewith.

** The Certification attached as Exhibit 32.1 that accompanies this Annual Report on Form 10-K is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Sera Prognostics, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Annual Report on Form 10-K, irrespective of any general incorporation language contained in such filing.

  • Indicates a management contract or any compensatory plan, contract or arrangement.

† Portions of this exhibit (indicated by asterisks) have been omitted in accordance with the rules of the Securities and Exchange Commission.

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