Form 4 for PRM Perimeter Solutions, Inc.

Accepted 2026-05-22 17:39:28 ET · period of report 2026-05-20 · accession 0001892618-26-000006 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2026-05-22 17:39	2026-05-20+	PRM	Khouri Haitham	CEO, Dir	S - Sale	$31.73	-229.5K	1.87M	-11%	-$7.28M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-05-20	S	D	20,300	$34.09	2,083,850	D	—	—	(F1) Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $34.00 to $34.28 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.
2	Common	Common Stock	2026-05-21	S	D	91,724	$31.91	1,992,126	D	—	—	(F2) Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $31.32 to $33.18 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.
3	Common	Common Stock	2026-05-22	S	D	117,511	$31.19	1,874,615	D	—	—	(F3) Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $30.54 to $31.61 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.