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  4. [Form 4] GRIFFON CORP Insider Trading Activity

Griffon (NYSE: GFF) President & COO sells 3,565 shares, retains 802,951

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Griffon Corp President and COO Robert F. Mehmel reported open-market sales of 3,565 shares of common stock. On June 17, he sold 547 shares at a weighted average price of $95.37. On June 16, he sold 97 shares at $96.25 and 2,921 shares at $95.36.

After these transactions, Mehmel directly holds 802,951 shares of Griffon common stock and has an additional 4,219 shares held indirectly through an ESOP. The reported sales represent a small portion of his overall holdings.

Positive

  • None.

Negative

  • None.
Insider MEHMEL ROBERT F
Role President and COO
Sold 3,565 shs ($340K)
Type Security Shares Price Value
Sale Common Stock 547 $95.37 $52K
Sale Common Stock 2,921 $95.36 $279K
Sale Common Stock 97 $96.25 $9K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 802,951 shares (Direct, null); Common Stock — 4,219 shares (Indirect, by ESOP)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $95.00 to $95.85, 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 ranges set forth in footnotes (1), (2) and (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.02 to $96.25, inclusive. 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 $95.66, inclusive.
Total shares sold 3,565 shares Net open-market sales reported on June 16–17
June 17 sale 547 shares at $95.37 Open-market sale of common stock
June 16 sale (1) 97 shares at $96.25 Open-market sale of common stock
June 16 sale (2) 2,921 shares at $95.36 Open-market sale of common stock
Direct holdings after 802,951 shares Common stock directly owned after transactions
Indirect ESOP holdings 4,219 shares Common stock held indirectly by ESOP
open-market sale financial
"transaction_action: "open-market sale" for each sale of common stock"
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
"nature_of_ownership: "by ESOP" for indirect holdings"
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.
indirect ownership financial
"ownership_type: "indirect" and ownership_code: "I" for ESOP shares"
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
MEHMEL ROBERT 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)
Director10% Owner
XOfficer (give title below)Other (specify below)
President and COO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/16/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/16/2026S2,921D$95.36(1)803,595D
Common Stock06/16/2026S97D$96.25(2)803,498D
Common Stock06/17/2026S547D$95.37(3)802,951D
Common Stock4,219Iby 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $95.00 to $95.85, 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 ranges set forth in footnotes (1), (2) and (3) to this Form 4.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.02 to $96.25, inclusive.
3. 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 $95.66, inclusive.
Remarks:
/s/ Seth L. Kaplan, as attorney-in-fact06/18/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did GRIFFON CORP (GFF) report for Robert F. Mehmel?

Griffon reported that President and COO Robert F. Mehmel sold 3,565 shares of common stock in open-market transactions. These sales occurred on June 16 and June 17 at prices around the mid-$90s per share, while he retained a substantial remaining stake.

How many GFF shares did Robert F. Mehmel sell and at what prices?

Robert F. Mehmel sold a total of 3,565 Griffon shares. He sold 2,921 shares at a weighted average price of $95.36, 547 shares at $95.37, and 97 shares at $96.25, all reported as open-market sales of common stock.

What are Robert F. Mehmel’s remaining GFF holdings after these transactions?

After the reported sales, Robert F. Mehmel directly holds 802,951 shares of Griffon common stock. He also has 4,219 additional shares held indirectly through an ESOP, showing he maintains a large ongoing ownership position in the company.

Were the GFF insider share sales by Robert F. Mehmel open-market transactions?

Yes. The Form 4 describes Robert F. Mehmel’s transactions as open-market sales of Griffon common stock. Each sale is coded with transaction code “S,” indicating sales in the open market or private transactions at reported weighted average prices.