Thorndike William N Jr 4
4 · Perimeter Solutions, Inc. · Filed Mar 11, 2026
Research Summary
AI-generated summary of this filing
Perimeter Solutions Director William Thorndike Sells Shares
What Happened
- William N. Thorndike Jr., a director of Perimeter Solutions, sold a total of 325,000 shares in open-market transactions between March 9 and March 11, 2026. The four disposals were: 90,043 shares at a weighted avg $23.18 (proceeds $2,087,197), 34,957 shares at $23.85 (proceeds $833,724), 100,000 shares at $23.63 (proceeds $2,363,000), and 100,000 shares at $23.18 (proceeds $2,318,000). Total reported proceeds ≈ $7,601,921. These were sales (not purchases), which are often routine insider dispositions.
Key Details
- Transaction dates and weighted-average prices:
- Mar 9, 2026: 90,043 shares @ $23.18 (F1); price range on that date ~$22.71–$23.71.
- Mar 9, 2026: 34,957 shares @ $23.85 (F2); price range on that date ~$23.73–$23.95.
- Mar 10, 2026: 100,000 shares @ $23.63 (F3); price range on that date ~$23.33–$23.97.
- Mar 11, 2026: 100,000 shares @ $23.18 (F4); price range on that date ~$22.72–$23.40.
- Total shares sold: 325,000; total proceeds reported ≈ $7.6M.
- Shares owned after the transactions: not specified in the filing.
- Footnotes F1–F4 note the weighted-average prices and provide price ranges for each date; the filer can supply a breakdown of share counts at each separate price on request.
- Filing date: March 11, 2026. The Form 4 was filed March 11 and appears to report the March 9–11 trades within the usual reporting window.
Context
- These were open-market sales (code "S") — dispositions do not necessarily indicate the director’s view of the company; they can be for diversification, taxes, or other personal reasons. No option exercises, awards, or 10b5-1 plan references were included in the filing.
Insider Transaction Report
Form 4
Thorndike William N Jr
Director
Transactions
- Sale
Common Stock
[F1]2026-03-09$23.18/sh−90,043$2,087,197→ 8,770,613 total - Sale
Common Stock
[F2]2026-03-09$23.85/sh−34,957$833,724→ 8,735,656 total - Sale
Common Stock
[F3]2026-03-10$23.63/sh−100,000$2,363,000→ 8,635,656 total - Sale
Common Stock
[F4]2026-03-11$23.18/sh−100,000$2,318,000→ 8,535,656 total
Footnotes (4)
- [F1]Represents the weighted average price of the shares sold on March 9, 2026. The prices of the shares sold pursuant to the transaction ranged from approximately $22.71 to $23.71 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.
- [F2]Represents the weighted average price of the shares sold on March 9, 2026. The prices of the shares sold pursuant to the transaction ranged from approximately $23.73 to $23.95 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.
- [F3]Represents the weighted average price of the shares sold on March 10, 2026. The prices of the shares sold pursuant to the transaction ranged from approximately $23.33 to $23.97 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.
- [F4]Represents the weighted average price of the shares sold on March 11, 2026. The prices of the shares sold pursuant to the transaction ranged from approximately $22.72 to $23.40 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.
Signature
/s/ Noriko Yokozuka, as Attorney-in-Fact|2026-03-11