0001193125-26-104696.txt : 20260312 0001193125-26-104696.hdr.sgml : 20260312 20260312200806 ACCESSION NUMBER: 0001193125-26-104696 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20260312 DATE AS OF CHANGE: 20260312 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SERA PROGNOSTICS, INC. CENTRAL INDEX KEY: 0001534969 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-MEDICAL LABORATORIES [8071] ORGANIZATION NAME: 08 Industrial Applications and Services EIN: 261911522 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-40606 FILM NUMBER: 26749673 BUSINESS ADDRESS: STREET 1: 2749 E. PARLEYS WAY STREET 2: SUITE 200 CITY: SALT LAKE CITY STATE: UT ZIP: 84109 BUSINESS PHONE: (801) 990-0520 MAIL ADDRESS: STREET 1: 2749 E. PARLEYS WAY STREET 2: SUITE 200 CITY: SALT LAKE CITY STATE: UT ZIP: 84109 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Boniface John J. CENTRAL INDEX KEY: 0001870674 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O SERA PROGNOSTICS, INC. STREET 2: 2749 EAST PARLEYS WAY, SUITE 200 CITY: SALT LAKE CITY STATE: UT ZIP: 84109 144 1 primary_doc.xml 144 0001870674 XXXXXXXX LIVE 0001534969 Sera Prognostics, Inc. 001-40606 2749 East Parleys Way Suite 200 Salt Lake City UT 84109 (801)-990-0520 Boniface John J. Officer Class A Common Morgan Stanley Smith Barney LLC

1 New York Plaza 38th Floor New York NY 10004

1517 3097 38594793 03/11/2026 NASDAQ Class A Common 03/11/2026 Restricted Stock Unit Vesting Issuer N 1517 03/11/2026 Not Applicable N John J. Boniface

2749 E. Parleys Way Suite 200 Salt Lake City UT 84109

Class A Common 12/10/2025 1332 4405 John J. Boniface

2749 E. Parleys Way Suite 200 Salt Lake City UT 84109

Class A Common 03/09/2026 3038 5964 The sale on this form represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by sell to cover transactions and does not represent a discretionary transaction by the Reporting Person. 03/12/2026 /s/ John Boniface