Quick Takeaways
- William N. Thorndike Jr. filed SCHEDULE 13D for Perimeter Solutions, Inc. Common Stock (PRM).
- Disclosed ownership: 5.7%.
- Date of event: 03 Mar 2026.
William N. Thorndike Jr. - 03 Mar 2026 SCHEDULE 13D Report for Perimeter Solutions, Inc. Common Stock (PRM)
- Filing Manager
- William N. Thorndike Jr.
- Reporting Manager
- William N. Thorndike, Jr.
- Symbol
- PRM
- Shares outstanding
- 163,321,772 shares
- Disclosed Ownership
- 9,309,341 shares
- Ownership
- 5.7%
- Form type
- SCHEDULE 13D
- Filing time
- 10 Mar 2026, 18:12:02 UTC
- Date of event
- 03 Mar 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"William N. Thorndike Jr. disclosed 5.7% ownership in Perimeter Solutions, Inc. Common Stock (PRM) on 03 Mar 2026."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 10 Mar 2026, 18:12.
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 FilingReporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| William N. Thorndike, Jr. | 5.7% | 9,309,341 | 9,309,341 | 0 | /s/ William N Thorndike, Jr. | William N. Thorndike, Jr. | 0001437827 |