Every Form 4 that Perimeter Solutions, Inc. (PRM) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow PRM and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full PRM filings page.
The WindAcre Partnership Master Fund, LP, a ten percent owner of Perimeter Solutions, Inc. (PRM), reported open‑market sales totaling 5,705,979 ordinary shares on June 26, 29 and 30, 2026 at prices between $33.00 and $36.25 per share. Following these transactions, the Master Fund held 16,148,621 ordinary shares directly. Related entities The WindAcre Partnership LLC, The WindAcre General Partner LP, WAPGP LLC and Snehal Amin may be deemed to indirectly beneficially own these securities.
Perimeter Solutions, Inc.’s largest shareholder group reported sizable open-market sales of its ordinary shares. The WindAcre Partnership Master Fund, LP, whose holdings may be deemed indirectly beneficially owned by The WindAcre Partnership LLC and related entities, sold a total of 5,705,979 ordinary shares of Perimeter Solutions in open-market transactions between June 26 and June 30, 2026, at prices ranging from $33.00 to $36.25 per share. Following these sales, the reporting group continues to hold 16,148,621 ordinary shares directly.
Perimeter Solutions, Inc. director and Chief Executive Officer Haitham Khouri reported open-market sales of a total of 229,535 shares of Common Stock across three days. He sold 20,300 shares on May 20, 2026 at a weighted average price of $34.09 per share, with individual trade prices ranging from approximately $34.00 to $34.28. On May 21, 2026, he sold 91,724 shares at a weighted average price of $31.91, with prices between about $31.32 and $33.18. On May 22, 2026, he sold 117,511 shares at a weighted average price of $31.19, with prices between roughly $30.54 and $31.61. Following the most recent transaction, Khouri directly holds 1,874,615 shares of Perimeter Solutions common stock.
Perimeter Solutions, Inc.’s Chief Financial Officer, Kyle Sable, exercised stock options and sold the resulting shares. Sable exercised options for 49,540 shares of common stock at an exercise price of $8.36 per share, then executed open-market sales totaling 49,540 shares on May 13, 2026 at weighted average prices of $33.05 and $33.59 per share. Following these transactions, Sable reported owning 0 shares of common stock directly while retaining stock options covering 70,000 shares that remain outstanding and unexercised.
Perimeter Solutions, Inc. President – Global Fire Safety Jeffrey Emery exercised stock options and sold the resulting shares in an open-market transaction. He exercised options to acquire 53,537 shares of common stock at $8.36 per share, then sold 53,537 shares at a weighted average price of $33.45 per share, with individual sale prices ranging from approximately $33.27 to $33.67 per share. Following these transactions, he reported no directly held common shares and 300,000 stock options remaining, exercisable for common stock until May 6, 2032.
Perimeter Solutions, Inc. executive Jeffrey Emery, President – Global Fire Safety, reported paired option exercises and share sales in company stock. On May 8 and May 11, 2026, he exercised options for a total of 146,463 shares of Common Stock at an exercise price of $8.36 per share and then sold the same number of shares in open-market transactions.
The reported sales were at prices of $32.00, $32.90, and $34.05 per share, with footnotes stating weighted-average prices and sale ranges from approximately $32.00 to $34.18 per share. After these transactions, the filing shows no remaining Common Stock holdings and no remaining derivative positions for Emery.
Perimeter Solutions, Inc. Chief Financial Officer Sable Kyle reported option exercises followed by open-market sales of Common Stock. On May 8–12, 2026, Kyle exercised stock options covering 200,460 shares at exercise prices of $8.36 and $3.89 per share and sold 200,460 shares of Common Stock in the open market.
The reported sales included 150,000 shares at a weighted-average price of $31.52, 20,460 shares at a weighted-average price of $32.89, and 30,000 shares at a weighted-average price of $31.75, with actual trade prices ranging from approximately $31.00 to $33.16 per share as described in the footnotes.
Perimeter Solutions director Howley W. Nicholas gifted 3,480,640 shares of Common Stock to a 501(c)(3) nonprofit organization in a bona fide charitable transaction. The shares were transferred at a reported price of $0.00 per share under an exemption pursuant to Rule 16b-5. After the gift, Nicholas directly holds 606,200 shares of Perimeter Solutions common stock.
Perimeter Solutions, Inc. director W Nicholas Howley reported a bona fide gift of 1,000,000 shares of common stock. The shares were gifted to a 501(c)(3) nonprofit organization in an exempt transaction pursuant to Rule 16b-5.
After the gift, Howley directly holds 4,086,840 shares of Perimeter Solutions common stock. The transaction reflects a charitable transfer rather than an open-market sale or purchase and does not involve a stated price per share.
Perimeter Solutions, Inc. director William N. Thorndike Jr. reported open-market sales of a total of 325,000 shares of Common Stock over three trading days. He sold 134,000 shares on March 9, 2026 in two trades of 90,043 and 34,957 shares at weighted average prices of $23.18 and $23.85 per share, 100,000 shares on March 10, 2026 at a weighted average price of $23.63 per share, and 100,000 shares on March 11, 2026 at a weighted average price of $23.18 per share. The footnotes state that each daily price is a weighted average within intraday ranges, and full breakdowns are available upon request. Following these transactions, he directly holds 8,535,656 shares of Perimeter Solutions common stock.
Perimeter Solutions, Inc. director William N. Thorndike Jr. reported selling a total of 325,000 shares of common stock in open-market transactions. The sales took place over three days, with 125,000 shares sold on March 4, 2026, 100,000 shares on March 5, 2026, and 100,000 shares on March 6, 2026.
The reported weighted average sale prices were $24.26 on March 4, $24.06 on March 5, and $23.63 on March 6, 2026, with actual trade prices on each day ranging within the bands described in the footnotes. Following these transactions, Thorndike directly held 8,860,656 shares of Perimeter Solutions common stock.
Perimeter Solutions, Inc. director Tracy Britt Cool acquired 65,843 shares of common stock on March 3, 2026 through an exempt grant from the company. The shares were awarded at a stated price of $0.00 per share, increasing her directly held stake to 250,493 shares of common stock. The award is described as an exempt acquisition from the issuer under Rule 16b-3(d) based on her membership interests in EverArc Founders, LLC.
Perimeter Solutions, Inc. director William N. Thorndike Jr reported an exempt acquisition of 5,582,492 shares of common stock on March 3, 2026. The shares were acquired from the issuer at a stated price of $0.00 per share under a grant, award, or similar arrangement. Following this transaction, his directly held common stock increased to 9,185,656 shares. A footnote explains the acquisition is pursuant to Rule 16b-3(d) and is based on his membership interests in EverArc Founders, LLC.
Perimeter Solutions director Raj Vivek received a large stock award from the company. On the reported date, he acquired 555,859 shares of Perimeter Solutions, Inc. common stock at a stated price of $0.00 per share through a grant or award transaction exempt under Rule 16b-3(d), based on his membership interests in EverArc Founders, LLC.
After this award, his directly reported holdings increased to 677,560 common shares, reflecting the size of the equity grant rather than an open-market purchase.
Perimeter Solutions director W. Nicholas Howley reported two stock transactions. On March 3, 2026, he acquired 5,582,492 shares of Perimeter Solutions, Inc. common stock in an exempt transaction from the issuer under Rule 16b-3(d), based on his membership interests in EverArc Founders, LLC.
On the same date, he disposed of 1,101,852 shares through a bona fide gift to a 501(c)(3) nonprofit organization in an exempt transaction under Rule 16b-5. After these transactions, he directly owned 5,086,840 shares of common stock.
Perimeter Solutions, Inc. director and Chief Executive Officer Haitham Khouri reported an equity award of company common stock. On the reported date, he acquired 1,600,317 shares of common stock at a stated price of $0.00 per share as a grant or award acquisition.
Following this exempt acquisition from the issuer pursuant to Rule 16b-3(d), his directly held common stock ownership increased to 2,104,150 shares. The footnote explains that the award is based on his membership interests in EverArc Founders, LLC.
Perimeter Solutions director Bernt G. Iversen II reported multiple stock option acquisitions related to performance-based vesting. On February 26, 2026, he acquired several tranches of stock options with rights to buy shares of common stock at a stated price of $0.00 per option in the table.
Footnotes explain these entries reflect vesting from prior option grants made between May 3, 2022 and December 23, 2025. Each grant vests in five equal annual installments based on the company meeting specified performance criteria for the relevant fiscal years, with 2025 performance either met or partially met, triggering vesting of portions ranging from 2,655 to 7,000 options per grant.
Perimeter Solutions, Inc. reported that executive Grant Bowman, President of Specialty Products, acquired additional stock options through performance-based vesting. An option granted on February 14, 2024 vested for 100,000 shares after 2025 performance criteria were met, bringing that award to 200,000 options outstanding. A separate option granted on February 12, 2025 vested for 39,820 shares after 2025 criteria were partially met, leaving 39,820 options outstanding for that award.
Perimeter Solutions, Inc. director and Chief Executive Officer Haitham Khouri reported the vesting of previously granted stock options tied to 2025 performance. Three tranches of options to purchase common stock became vested awards: 88,489 shares from a February 12, 2025 grant for 500,000 shares where performance criteria were partially met, 100,000 shares from a February 14, 2024 grant for 500,000 shares where performance criteria were met, and 400,000 shares from a March 8, 2023 grant for 2,000,000 shares where performance criteria were met. These awards are shown as stock option acquisitions at a price per share of $0.0000, increasing his directly held option positions.
Perimeter Solutions, Inc. reported that President - Global Fire Safety Jeffrey Emery acquired 200,000 stock options through vesting of a previously granted award. These options relate to a 1,000,000-share option granted on May 6, 2022, which vests in five equal annual installments tied to performance goals.
The company states that performance criteria for fiscal year 2025 were met, triggering vesting of 200,000 shares under this option. Following this vesting event, Emery now holds 500,000 stock options directly, reflecting accumulated vested portions of the original performance-based grant.
Perimeter Solutions Chief Financial Officer Kyle Sable reported acquiring vested stock options on three prior equity awards after 2025 performance goals were met. Options originally granted in 2024, 2023, and 2022 vested for 50,000, 20,000, and 100,000 shares of common stock, respectively, all held as direct ownership.
Perimeter Solutions, Inc. reported that General Counsel Noriko Yokozuka acquired 120,000 stock options through vesting of a previously granted award. These options relate to an option granted on November 8, 2021 to purchase 600,000 shares of common stock, which vests in five equal annual performance-based installments. The company states that its performance criteria for fiscal year 2025 were met, triggering vesting of the option with respect to 120,000 shares. Following this vesting event, Yokozuka now holds 360,000 stock options directly.
HENNESSY SEAN P reported acquisition or exercise transactions in this Form 4 filing.
Perimeter Solutions, Inc. director Sean P. Hennessy reported the vesting of performance-based stock options covering 37,944 shares of common stock on February 26, 2026. These options, each described as a "Stock Option (right to buy)" with a reported price of $0.00 per share, stem from grants originally awarded between December 2021 and February 2025.
The filing explains that company performance criteria for fiscal year 2025 were met or partially met for six separate option grants, causing annual tranches of 6,194 shares, 7,000 shares in four separate grants, and 1,750 shares to become exercisable in five- or multi-year schedules tied to those awards.
Perimeter Solutions, Inc. reported that director Robert S. Henderson acquired multiple stock option positions on February 26, 2026, reflecting vesting of previously granted performance-based options rather than open-market purchases. All transactions involve "Stock Option (right to buy)" awards recorded at an acquisition price of $0.00 per option in the form.
Footnotes explain that these options were originally granted between December 7, 2021 and December 23, 2025, typically covering options to purchase between 8,750 and 35,000 shares, vesting in five equal annual installments. For the fiscal year ending December 31, 2025, performance criteria were met or partially met, causing specific tranches to vest, including 2,655, 6,194, several grants of 7,000, and one grant of 1,750 options. No share sales or disposals are reported in this filing.
Perimeter Solutions, Inc. director Cool Tracy Britt reported the acquisition of stock options to buy common shares after 2025 performance goals were met. On February 26, 2026, multiple option tranches vested at a price of $0.00 per share.
The activity reflects performance-based vesting from prior grants: 6,194 options tied to a February 12, 2025 grant, three 7,000-option tranches from grants dated February 14, 2024, February 15, 2023 and January 28, 2022, and 1,750 options from a December 7, 2021 grant.
Raj Vivek reported acquisition or exercise transactions in this Form 4 filing.
Perimeter Solutions, Inc. director Raj Vivek reported the vesting of multiple performance-based stock options tied to the company’s 2025 fiscal year results. These awards, originally granted between 2021 and 2025, resulted in options on a total of 28,944 shares of common stock becoming exercisable.
The Form 4 shows one 2025 grant vesting as to 6,194 shares after performance criteria were partially met, plus four earlier grants vesting as to 7,000, 7,000, 7,000, and 1,750 shares each as 2025 performance targets were achieved. All options are held directly by the reporting person.
Perimeter Solutions, Inc. director Jorge L. Valladares III reported acquiring vested stock options linked to 2025 performance goals. On April 21, 2025 and February 12, 2025, he had received separate options to buy 35,000 common shares each. Because the company only partially met its 2025 performance criteria, each grant vested as to 6,194 stock options. These are derivative securities with a reported exercise price of $0.0000 per share in this filing, reflecting non-cash, performance-based equity compensation rather than an open-market share purchase or sale.
Perimeter Solutions, Inc. reported an insider equity transaction by its General Counsel on 12/12/2025. The officer exercised stock options with a $10 exercise price to acquire 17,500 and 120,000 shares of common stock, then sold 137,500 shares at a weighted average price of $28.44 per share, with individual sale prices ranging from approximately $28.15 to $29.26.
After these transactions, the General Counsel directly beneficially owned 47,157 shares of common stock and 240,000 stock options, as reported in the filing.
Perimeter Solutions, Inc. reported an insider stock transaction by its chief financial officer. On 12/12/2025, the CFO exercised 100,000 stock options with an exercise price of $8.36 per share, acquiring the same number of common shares. That same day, the CFO sold 100,000 shares of common stock at a weighted average price of $28.47 per share, with individual sale prices ranging from approximately $28.16 to $29.44 per share. After these transactions, the CFO reported direct beneficial ownership of 0 shares of common stock and 200,000 stock options with a $8.36 exercise price expiring on 05/06/2032.
Perimeter Solutions, Inc. director reported a charitable stock transfer. On 12/09/2025, the reporting person gifted 673,685 shares of Perimeter Solutions common stock to a 501(c)(3) nonprofit organization in an exempt transaction under Rule 16b-5 of the Securities Exchange Act of 1934. The transaction price is listed as $0 because it was a gift, not a sale. Following this transaction, the director beneficially owns 3,603,164 shares of Perimeter Solutions common stock directly.
Perimeter Solutions, Inc. (PRM) reported an insider gift of common stock by one of its directors. On 11/24/2025, the director transferred 746,767 shares of Perimeter Solutions common stock as a gift in a transaction coded “G” under the reporting rules. The shares were gifted to a 501(c)(3) nonprofit organization in an exempt transaction pursuant to Rule 16b-5 of the Securities Exchange Act of 1934. Following this charitable gift, the director directly beneficially owns 606,200 shares of Perimeter Solutions common stock.