Griffon Corp director sells 3,500 shares at $105.59

Kevin F. Sullivan, a director of Griffon Corp (GFF), reported selling 3,500 shares of common stock on 2026-08-13 in a sale described as an open market or private transaction.

Rhea-AI Filing Summary

Kevin F. Sullivan, a director of Griffon Corp (GFF), reported selling 3,500 shares of common stock on 2026-08-13 in a sale described as an open market or private transaction. The reported price of $105.59 per share reflects a weighted average of multiple trades executed between $105.58 and $105.95 per share. Following this transaction, Sullivan’s directly held stake in Griffon Corp common stock is reported as 40,602 shares.

Insider Trade Summary

Net Seller: 3,500 shares

Net Sell 1 txn

Insider Sullivan Kevin F

Role Director

Sold 3,500 shs ($370K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	3,500	$105.59	$370K

Holdings After Transaction: Common Stock — 40,602 shares (Direct)

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 $105.58 to $105.95, inclusive.

Key Figures

Shares sold: 3,500 shares Weighted average sale price: $105.59 per share Sale price range: $105.58–$105.95 per share +2 more

5 metrics

Shares sold 3,500 shares Common Stock sold by director Kevin F. Sullivan on 2026-08-13

Weighted average sale price $105.59 per share Reported weighted average price for the 3,500 shares sold

Sale price range $105.58–$105.95 per share Range of prices for multiple transactions included in the reported sale

Shares held after sale 40,602 shares Total Griffon Corp common shares directly owned after the transaction

Transaction date 2026-08-13 Date of reported sale of 3,500 common shares

Key Terms

weighted average price, open market or private transaction, Common Stock

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"

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did GRIFFON CORP (GFF) director Kevin F. Sullivan report?

Director Kevin F. Sullivan reported selling 3,500 shares of Griffon Corp common stock on 2026-08-13 in an open market or private transaction at a weighted average price of $105.59 per share.

At what price did Kevin F. Sullivan sell GFF shares in this Form 4 filing?

The Form 4 reports a weighted average price of $105.59 per share. A footnote explains the 3,500 shares were sold in multiple transactions at prices ranging from $105.58 to $105.95 per share.

How many GFF shares does Kevin F. Sullivan hold after the reported sale?

After selling 3,500 shares, Kevin F. Sullivan is reported to directly own 40,602 shares of Griffon Corp common stock. This post-transaction holding figure is provided in the Form 4 as the total shares following the transaction.

Was the 2026-08-13 GFF insider sale by Kevin F. Sullivan under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox is not marked as affirming a trading plan, and the price footnote only describes the sale as multiple transactions within a $105.58–$105.95 range. No specific 10b5-1 plan reference appears in the disclosure.

What type of security did Kevin F. Sullivan sell in the GFF Form 4?

The transaction involves Common Stock of Griffon Corp. On 2026-08-13, Kevin F. Sullivan reported selling 3,500 shares of this common stock at a weighted average price of $105.59 per share, leaving him with 40,602 directly held shares.

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

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Available on EDGAR 08/14/2026 - 04:35 PM Accepted by SEC EDGAR 08/14/2026 - 04:31 PM Learn about SEC filing dates

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^*

Sullivan Kevin F

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/13/2026

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	08/13/2026		S		3,500	D	$105.59(1)	40,602	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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.58 to $105.95, inclusive.

Remarks:

	/s/ Seth L. Kaplan, as attorney-in-fact	08/14/2026
	** 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)