Perimeter Solutions, Inc. — Director's Dealing 2026

Mar 2, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Perimeter Solutions, Inc. (PRM)
CIK: 0001880319
Period of Report: 2026-02-26

Reporting Person: Iversen Bernt G II (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-26	Stock Option (right to buy)	$27.84	A	2655	Acquired	2035-12-23	Common Stock (2655)	Direct
2026-02-26	Stock Option (right to buy)	$11.80	A	6194	Acquired	2035-02-12	Common Stock (6194)	Direct
2026-02-26	Stock Option (right to buy)	$5.23	A	7000	Acquired	2034-02-14	Common Stock (7000)	Direct
2026-02-26	Stock Option (right to buy)	$8.88	A	7000	Acquired	2033-02-15	Common Stock (7000)	Direct
2026-02-26	Stock Option (right to buy)	$5.50	A	7000	Acquired	2033-09-06	Common Stock (7000)	Direct
2026-02-26	Stock Option (right to buy)	$10.13	A	5833	Acquired	2032-05-03	Common Stock (5833)	Direct

Footnotes

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 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.

F5: 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.

F6: On May 3, 2022, the reporting person was granted an option to purchase 29,167 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 5,833 shares of common stock.