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

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Quoteable Key Fact

"Whetstone Capital Advisors, LLC disclosed 9.2% ownership in Sera Prognostics, Inc. Class A Common Stock, par value $0.0001 per share (SERA) on 31 Dec 2025."

Quick Takeaways

  • Whetstone Capital Advisors, LLC filed SCHEDULE 13G/A for Sera Prognostics, Inc. Class A Common Stock, par value $0.0001 per share (SERA).
  • Disclosed ownership: 9.2%.
  • Date of event: 31 Dec 2025.

What Changed

  • Previous schedule filing date: 08 Sep 2025.
  • Current filing was accepted on 16 Jan 2026, 14:45.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

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

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