Whetstone Capital Advisors, LLC - 31 Dec 2025 SCHEDULE 13G/A Report for Sera Prognostics, Inc. Class A Common Stock, par value $0.0001 per share (SERA)

Filing Manager: Whetstone Capital Advisors, LLC
Reporting Manager: Whetstone Capital Advisors, LLC
Security: Sera Prognostics, Inc. Class A Common Stock, par value $0.0001 per share
Symbol: SERA
Shares outstanding: 37,605,576 shares
Disclosed Ownership: 3,459,713 shares
Ownership: 9.2%
Form type: SCHEDULE 13G/A
Filing time: 16 Jan 2026, 14:45:31 UTC
Date of event: 31 Dec 2025
Previous filing: 08 Sep 2025
SEC: View on sec.gov

Reporting Managers (2)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Whetstone Capital Advisors, LLC	9.2%	3,459,713		3,459,713	/s/ David Atterbury	Manager
David Atterbury	9.2%	3,459,713		3,459,713	/s/ David Atterbury	David Atterbury