Hydrofarm (HYFM) CFO logs 1,150 shares withheld for RSU tax

Rhea-AI Filing Summary

Hydrofarm Holdings Group, Inc. Chief Financial Officer Kevin Patrick O'Brien reported an automatic share withholding related to equity compensation. On January 6, 2026, a total of 1,150 shares of common stock were withheld at a price of $1.51 per share to cover tax obligations arising from the vesting of 3,333 stock-settled restricted stock units, which convert into common stock on a one-for-one basis. After this tax withholding event, O'Brien beneficially owned 13,222 shares of Hydrofarm common stock in direct form.

Insider Trade Summary

Net Seller: 1,150 shares ($1,737)

Net Sell 1 txn

Insider O'Brien Kevin Patrick

Role Chief Financial Officer

Sold 1,150 shs ($2K)

Type	Security	Shares	Price	Value
Sale	Common Stock, $0.0001 par value per share	1,150	$1.51	$2K

Holdings After Transaction: Common Stock, $0.0001 par value per share — 13,222 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

O'Brien Kevin Patrick

(Last) (First) (Middle)

1510 MAIN STREET

(Street)

SHOEMAKERSVILLE PA 19555

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HYDROFARM HOLDINGS GROUP, INC. [ HYFM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $0.0001 par value per share	01/06/2026		S		1,150(1)	D	$1.51	13,222	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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

Remarks:

	/s/ Kevin Patrick O'Brien	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did HYFM report for Kevin Patrick O'Brien?

Hydrofarm Chief Financial Officer Kevin Patrick O'Brien reported an automatic withholding of 1,150 shares of common stock on January 6, 2026 to cover tax obligations from vesting restricted stock units.

Was the HYFM CFO’s Form 4 transaction an open-market sale?

No. The 1,150 shares shown with transaction code "S" were withheld to satisfy tax withholding obligations tied to the vesting of 3,333 stock-settled restricted stock units, not a discretionary open-market sale.

How many HYFM shares does the CFO own after this reported transaction?

Following the tax withholding transaction, Kevin Patrick O'Brien beneficially owned 13,222 shares of Hydrofarm common stock in direct ownership.

What type of equity award vested for the HYFM CFO?

The filing states that 3,333 stock-settled restricted stock units vested. Each unit may be settled on a 1-for-1 basis in shares of Hydrofarm common stock.

What was the reported share price for the HYFM CFO’s tax withholding?

The 1,150 shares withheld for tax obligations were reported at a price of $1.51 per share of Hydrofarm common stock.

What is Kevin Patrick O'Brien’s role at Hydrofarm Holdings Group, Inc.?

Kevin Patrick O'Brien is reported as an officer of Hydrofarm Holdings Group, Inc., serving as the company’s Chief Financial Officer.