Griffon (NYSE: GFF) CFO trims stake with 7,500-share stock sale

Rhea-AI Filing Summary

Griffon Corporation executive Brian G. Harris, EVP and Chief Financial Officer, sold 7,500 shares of common stock in an open-market transaction. The sale occurred on June 11, 2026 at a weighted average price of $95.03 per share, with individual trades ranging from $95.00 to $95.05.

After the sale, Harris directly owned 151,149 shares of Griffon common stock and indirectly held 4,944 shares through an ESOP account. The filing notes that detailed trade-by-trade pricing information within the reported range is available upon request.

Insider Trade Summary 10b5-1

Net Seller: 7,500 shares ($712,725)

Net Sell 2 txns

Insider Harris Brian G

Role EVP, Chief Financial Officer

Sold 7,500 shs ($713K)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,500	$95.03	$713K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 151,149 shares (Direct, null); Common Stock — 4,944 shares (Indirect, By ESOP)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 7,500 shares Weighted average sale price: $95.03 per share Sale price range: $95.00–$95.05 per share +2 more

5 metrics

Shares sold 7,500 shares Open-market sale of Griffon common stock on June 11, 2026

Weighted average sale price $95.03 per share Price for 7,500-share open-market sale

Sale price range $95.00–$95.05 per share Range of prices for individual trades within the reported sale

Direct holdings after sale 151,149 shares Griffon common stock directly owned by Brian G. Harris after transaction

Indirect ESOP holdings 4,944 shares Griffon common stock held indirectly through ESOP after transaction

Key Terms

open-market sale, weighted average price, ESOP, non-derivative

4 terms

open-market sale financial

"The sale occurred on June 11, 2026 in an open-market transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

ESOP financial

"indirectly held 4,944 shares through an ESOP account"

An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.

non-derivative financial

"open-market sale of non-derivative common stock"

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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).

X

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^*

Harris Brian G

(Last) (First) (Middle)

C/O GRIFFON CORPORATION

712 FIFTH AVENUE

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
GRIFFON CORP [ GFF ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

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

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

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

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	06/11/2026		S		7,500	D	$95.03(1)	151,149	D
Common Stock								4,944	I	By ESOP

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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.00 to $95.05, inclusive. The reporting person undertakes to provide Griffon Corporation, any security holder of Griffon Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares disposed of at each price within the range set forth in this footnote.

Remarks:

	/s/ Seth L. Kaplan, as attorney-in-fact	06/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Griffon (GFF) report for CFO Brian Harris?

Griffon reported that EVP and CFO Brian G. Harris sold 7,500 shares of common stock. The sale occurred on June 11, 2026 in an open-market transaction at a weighted average price of $95.03 per share.

At what price did Griffon (GFF) CFO Brian Harris sell his shares?

Brian G. Harris sold 7,500 Griffon shares at a weighted average price of $95.03. The Form 4 notes individual trades were executed between $95.00 and $95.05 per share, and detailed breakdowns are available upon request.

How many Griffon (GFF) shares does CFO Brian Harris own after the reported sale?

After the June 11, 2026 transaction, Brian G. Harris directly owned 151,149 Griffon common shares. He also indirectly held 4,944 additional shares through an ESOP account, according to the Form 4 filing data.

Was the Griffon (GFF) CFO sale a market transaction or something else?

The filing classifies Brian G. Harris’s 7,500-share transaction as an open-market sale of non-derivative common stock. This means the shares were sold on the market or via a similar private transaction, rather than through option exercises or other derivative activity.

Does the Griffon (GFF) Form 4 show any option exercises by the CFO?

No option exercises are reported in this Form 4. The transaction summary shows one open-market sale of 7,500 non-derivative common shares and no derivative exercises, with derivativeSummary listing no remaining derivative positions.