Griffon (GFF) CFO Harris sells 5,267 shares in 10b5-1 plan trade

Rhea-AI Filing Summary

Griffon Corp executive Brian G. Harris, EVP and Chief Financial Officer, sold 5,267 shares of common stock on 2026-08-07 in an open-market transaction under a Rule 10b5-1 trading plan. The weighted average sale price was $107.11 per share. After this sale, he directly held 128,649 shares and indirectly held 4,944 shares through an ESOP.

Insider Trade Summary 10b5-1

Net Seller: 5,267 shares

Net Sell 2 txns

Insider Harris Brian G

Role EVP, Chief Financial Officer

Sold 5,267 shs ($564K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	5,267	$107.11	$564K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 128,649 shares (Direct); Common Stock — 4,944 shares (Indirect, By ESOP)

Footnotes (1)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.05 to $107.12, 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.

Key Figures

Shares sold: 5,267 shares Weighted average sale price: $107.11 per share Direct holdings after sale: 128,649 shares +1 more

4 metrics

Shares sold 5,267 shares Common stock sale by CFO on 2026-08-07

Weighted average sale price $107.11 per share Open-market sale price range $107.05–$107.12

Direct holdings after sale 128,649 shares CFO direct ownership following the reported transaction

Indirect ESOP holdings after update 4,944 shares Indirect ownership through ESOP after reported transactions

Key Terms

weighted average price, open market or private transaction, ESOP

3 terms

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.

open market or private transaction financial

"Sale in open market or private transaction"

ESOP financial

"nature_of_ownership":"By ESOP"

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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/11/2026 - 04:16 PM Accepted by SEC EDGAR 08/11/2026 - 04:15 PM Learn about SEC filing dates

FAQ

What did Griffon (GFF) CFO Brian G. Harris report in this Form 4?

Brian G. Harris reported a sale of 5,267 Griffon common shares on 2026-08-07 at a weighted average price of $107.11 per share, executed as an open-market transaction under a Rule 10b5-1 trading plan.

How many Griffon (GFF) shares did the CFO sell and at what price?

The CFO sold 5,267 shares of Griffon common stock at a weighted average price of $107.11 per share, with individual trades occurring between $107.05 and $107.12, as disclosed in the footnote.

How many Griffon (GFF) shares does the CFO hold after this transaction?

After the reported sale, the CFO directly held 128,649 shares of Griffon common stock and indirectly held 4,944 shares through an ESOP, as shown in the post-transaction ownership entries.

Was the Griffon (GFF) CFO’s share sale under a Rule 10b5-1 plan?

Yes. The filing indicates the transactions were carried out under a Rule 10b5-1 trading plan, meaning the trades followed a pre-established plan rather than discretionary market timing.

What price range did Griffon (GFF) shares trade at in the CFO’s sale?

The shares in this reported sale were transacted at prices ranging from $107.05 to $107.12 per share, with the Form 4 stating a weighted average price of $107.11 per share for the 5,267 shares sold.

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)
08/07/2026

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	08/07/2026		S		5,267	D	$107.11(1)	128,649	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 $107.05 to $107.12, 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	08/11/2026
	** 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)