Proxy Results (Form 8-K)

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

On June 4, 2026, Sera Prognostics, Inc. (the "Company") held its 2026 Annual Meeting of Stockholders (the "Annual Meeting") via live audio webcast on the Internet. Of the 38,190,966 shares of Class A common stock, par value $0.0001 per share, issued and outstanding and eligible to vote as of the record date of April 13, 2026, a quorum of 25,773,203 shares, or 67.5% of the eligible shares, was present at the meeting or represented by proxy.

At the Annual Meeting, the stockholders: (1) elected each of Kim Kamdar, Ph.D. and Sandra A. J. Lawrence to the Company's Board of Directors as a Class II director for a term of three years to serve until the 2029 annual meeting of stockholders and until his or her successor is duly elected and qualified or until his or her earlier death, resignation, or removal ("Election of Directors"); and (2) ratified the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026 ("Auditor Ratification"). A more complete description of each of these matters is set forth in the Company's definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission on April 24, 2026.

The number of votes cast in favor or against or withheld by the stockholders and, where applicable, the number of abstentions and the number of broker non-votes on each of the foregoing matters are set forth below.

1. Election of Directors

2. Auditor Ratification