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: 8.6%.
- Date of event: 31 Mar 2026.
Whetstone Capital Advisors, LLC - 31 Mar 2026 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
- Symbol
- SERA
- Shares outstanding
- 38,452,198 shares
- Disclosed Ownership
- 3,306,889 shares
- Ownership
- 8.6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 01 May 2026, 16:49:36 UTC
- Date of event
- 31 Mar 2026
- Previous filing
- 16 Jan 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"Whetstone Capital Advisors, LLC disclosed 8.6% ownership in SERA PROGNOSTICS, INC. Class A Common Stock, par value $0.0001 per share (SERA) on 31 Mar 2026."
What Changed
- Previous schedule filing date: 16 Jan 2026.
- Current filing was accepted on 01 May 2026, 16:49.
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.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Whetstone Capital Advisors, LLC | 8.6% | 3,306,889 | 3,306,389 | /s/ David Atterbury | Manager | ||
| David Atterbury | 8.6% | 3,306,889 | 3,306,889 | /s/ David Atterbury | David Atterbury |