Kevin Patrick O'Brien - 18 Aug 2025 Form 4 Insider Report for HYDROFARM HOLDINGS GROUP, INC. (HYFM)

Role: Chief Financial Officer
Signature: /s/ Kevin Patrick O'Brien
Issuer symbol: HYFM
Transactions as of: 18 Aug 2025
Net transactions value: -$216
Form type: 4
Filing time: 20 Aug 2025, 16:02:58 UTC
Previous filing: 10 Apr 2025
Next filing: 08 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
O'Brien Kevin Patrick	Chief Financial Officer	1510 MAIN STREET, SHOEMAKERSVILLE	/s/ Kevin Patrick O'Brien	19 Aug 2025	0001735272

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HYFM	Common Stock, $0.0001 par value per share	Tax liability	$216	-48	-0.33%	$4.51	14,372	18 Aug 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares withheld to satisfy tax withholding obligation applicable to the vesting of 166 stock-settled restricted stock units, which may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.