MARK S. PARKER - 06 Jan 2026 Form 4 Insider Report for HYDROFARM HOLDINGS GROUP, INC. (HYFM)

Role
President
Signature
/s/ Mark Parker
Issuer symbol
HYFM
Transactions as of
06 Jan 2026
Net transactions value
-$2,525
Form type
4
Filing time
08 Jan 2026, 16:09:57 UTC
Previous filing
20 Aug 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
PARKER MARK S President 1510 MAIN STREET, SHOEMAKERSVILLE /s/ Mark Parker 08 Jan 2026 0001915363

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 $2,525 -1,672 -8% $1.51 19,328 06 Jan 2026 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 3,333 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