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Perimeter Solutions, Inc.·4

Mar 2, 5:28 PM ET

Henderson Robert S 4

4 · Perimeter Solutions, Inc. · Filed Mar 2, 2026

Research Summary

AI-generated summary of this filing

Updated

Perimeter (PRM) Director Robert S. Henderson Receives Option Vestings

What Happened

  • Robert S. Henderson, a director of Perimeter Solutions, had a total of 38,599 derivative securities (option-based awards) vest on February 26, 2026. Each vesting was reported as an acquisition (Form 4 code A) at $0.00 per share, so no cash was paid at the time of vesting. These vested amounts come from multiple prior option grants whose 2025 performance criteria were met or partially met.

Key Details

  • Transaction date: February 26, 2026 (filed March 2, 2026).
  • Aggregate shares vested: 38,599; reported acquisition price: $0.00 (derivative securities).
  • Breakdown by original grant (from footnotes):
    • Dec 23, 2025 grant — 2,655 shares vested (partial vesting) (F1).
    • Feb 12, 2025 grant — 6,194 shares vested (partial vesting) (F2).
    • Feb 14, 2024 grant — 7,000 shares vested (F3).
    • Sep 6, 2023 grant — 7,000 shares vested (F4).
    • Feb 15, 2023 grant — 7,000 shares vested (F5).
    • Jan 28, 2022 grant — 7,000 shares vested (F6).
    • Dec 7, 2021 grant — 1,750 shares vested (F7).
  • Transaction type: Derivative award vesting (Form 4 code A). This is vesting of previously granted options tied to performance criteria for fiscal 2025.
  • Shares owned after transaction: Not specified in the Form 4 filing.
  • Timeliness: Filed on March 2, 2026 for a Feb 26, 2026 transaction; appears to be filed within the required two business days (timely).

Context

  • These entries reflect options/awards vesting based on the company's achievement (fully or partially) of performance goals for fiscal 2025. This is not a market purchase or sale and does not indicate an immediate cash transaction or stock sale.
  • For retail investors: vesting increases the director's derivative/option holdings (or converts options into vested shares depending on plan mechanics) but by itself is not a signal of buying or selling pressure. Check subsequent filings (e.g., exercises or open-market sales) to see if shares were later sold.

Insider Transaction Report

Form 4
Period: 2026-02-26
Perimeter Solutions, Inc.PRM
Henderson Robert S
Director
Transactions
  • Award

    Stock Option (right to buy)

    [F1]
    2026-02-26+2,655→ 2,655 total
    Exercise: $27.84From: 2026-02-26Exp: 2035-12-23→ Common Stock (2,655 underlying)
  • Award

    Stock Option (right to buy)

    [F2]
    2026-02-26+6,194→ 6,194 total
    Exercise: $11.80From: 2026-02-26Exp: 2035-02-12→ Common Stock (6,194 underlying)
  • Award

    Stock Option (right to buy)

    [F3]
    2026-02-26+7,000→ 14,000 total
    Exercise: $5.23From: 2026-02-26Exp: 2034-02-14→ Common Stock (7,000 underlying)
  • Award

    Stock Option (right to buy)

    [F4]
    2026-02-26+7,000→ 21,000 total
    Exercise: $5.50From: 2026-02-26Exp: 2033-09-06→ Common Stock (7,000 underlying)
  • Award

    Stock Option (right to buy)

    [F5]
    2026-02-26+7,000→ 21,000 total
    Exercise: $8.88From: 2026-02-26Exp: 2033-02-15→ Common Stock (7,000 underlying)
  • Award

    Stock Option (right to buy)

    [F6]
    2026-02-26+7,000→ 28,000 total
    Exercise: $12.09From: 2026-02-26Exp: 2032-01-28→ Common Stock (7,000 underlying)
  • Award

    Stock Option (right to buy)

    [F7]
    2026-02-26+1,750→ 7,000 total
    Exercise: $11.80From: 2026-02-26Exp: 2031-12-07→ Common Stock (1,750 underlying)
Footnotes (7)
  • [F1]On December 23, 2025, the reporting person was granted an option to purchase 15,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2025, 2026, 2027, 2028 and 2029. The performance criteria for 2025 were partially met, resulting in the vesting of the option as to 2,655 shares of common stock.
  • [F2]On February 12, 2025, the reporting person was granted an option to purchase 35,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2025, 2026, 2027, 2028 and 2029. The performance criteria for 2025 were partially met, resulting in the vesting of the option as to 6,194 shares of common stock.
  • [F3]On February 14, 2024, the reporting person was granted an option to purchase 35,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2024, 2025, 2026, 2027 and 2028. The performance criteria for 2025 were met, resulting in the vesting of the option as to 7,000 shares of common stock.
  • [F4]On September 6, 2023, the reporting person was granted an option to purchase 35,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2023, 2024, 2025, 2026 and 2027. The performance criteria for 2025 were met, resulting in the vesting of the option as to 7,000 shares of common stock.
  • [F5]On February 15, 2023, the reporting person was granted an option to purchase 35,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2023, 2024, 2025, 2026 and 2027. The performance criteria for 2025 were met, resulting in the vesting of the option as to 7,000 shares of common stock.
  • [F6]On January 28, 2022, the reporting person was granted an option to purchase 35,000 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2022, 2023, 2024, 2025 and 2026. The performance criteria for 2025 were met, resulting in the vesting of the option as to 7,000 shares of common stock.
  • [F7]On December 7, 2021, the reporting person was granted an option to purchase 8,750 shares of common stock. The option vests in five equal annual installments based on the Issuer's satisfaction of certain performance criteria for each of the fiscal years ending December 31, 2022, 2023, 2024, 2025 and 2026. The performance criteria for 2025 were met, resulting in the vesting of the option as to 1,750 shares of common stock.
Signature
/s/ Noriko Yokozuka, as Attorney-in-Fact|2026-03-02

Documents

1 file
  • 4
    wk-form4_1772490512.xmlPrimary

    FORM 4