Perimeter Solutions, Inc. has 5 Schedule 13D or 13G filings on record since 2025-11-05. 4 holders' latest filing reports 5% or more of common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| The WindAcre Partnership LLC | 9.9% | 16,148,621 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Principal Global Investors | 8.2% | 13,375,024 | SCHEDULE 13G/A, 2026-08-05 | 2026-06-30 |
| Fmr LLC | 6.7% | 9,755,144 | SCHEDULE 13G, 2025-11-05 | 2025-09-30 |
| William N. Thorndike, Jr. | 5.7% | 9,309,341 | SCHEDULE 13D, 2026-03-10 | 2026-03-03 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
Purpose of Transaction (Item 4)
William N. Thorndike, Jr.
The Reporting Person acquired the securities of the Issuer for investment purposes. The information contained in Item 3 and in Item 6 of this Schedule 13D is incorporated herein by reference. The Reporting Person or his affiliates may purchase additional securities or dispose of securities of the Issuer in varying amounts and at varying times depending upon the Reporting Person's continuing assessments of pertinent factors, including the availability of shares of Common Stock or other securities for purchase at particular price levels, the business prospects of the Issuer, other business investment opportunities, economic conditions, stock market conditions, money market conditions, the attitudes and actions of the board of directors of the Issuer (the "Board") and management of the Issuer, the availability and nature of opportunities to dispose of shares of the Issuer and other plans and requirements of the Reporting Person. The Reporting Person may enter into derivative securities or similar instruments that derive their value with reference to securities of the Issuer, including hedging transactions with respect to some or all of the shares of Common Stock of the Issuer beneficially owned by the Reporting Person. The Reporting Person may discuss items of mutual interest with the Issuer, which could include items in subparagraphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Person intends to review his investment in the Issuer on an ongoing basis and, in the …The first part of Item 4 of the SCHEDULE 13D filed 2026-03-10; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-05 | Fmr LLC | 6.7% | SCHEDULE 13G |
| 2026-03-10 | William N. Thorndike, Jr. | 5.7% | SCHEDULE 13D |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-08-05 | Principal Global Investors | 8.2% | SCHEDULE 13G/A |
| 2026-08-14 | The WindAcre Partnership LLC | 9.9% | SCHEDULE 13G/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.