STOCK TITAN

Griffon (GFF) COO trims stake with 12,599-share open-market sale

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

Rhea-AI Filing Summary

Griffon Corp President and COO Robert F. Mehmel reported open-market sales of 12,599 shares of Common Stock over two days. On June 24 and 25, he executed several sale transactions at reported prices between about $95.45 and $97.27 per share, based on weighted-average prices disclosed.

After these sales, Mehmel directly owned 790,352 shares of Griffon Common Stock, according to the filing, and also had 4,219 shares held indirectly through an ESOP. The transactions appear as routine share disposals, with the executive retaining a substantial remaining equity stake.

Positive

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Negative

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Insights

Executive executes modest net share sale while keeping large stake.

Robert F. Mehmel, President and COO of Griffon Corp, reported net open-market sales of 12,599 Common Stock shares. All transactions are coded as S, indicating discretionary sales rather than option exercises, tax withholding, or gifts.

Following the sales, he still holds 790,352 shares directly plus 4,219 shares indirectly via an ESOP. With no derivative positions shown and a sizable remaining holding, the activity looks like a routine portfolio adjustment rather than a transformational change in exposure.

The filing notes that prices are reported on a weighted average basis, with underlying trades executed across price ranges around the mid‑$90s. Subsequent company filings may provide additional context, but this Form 4 alone suggests standard insider selling activity.

Insider MEHMEL ROBERT F
Role President and COO
Sold 12,599 shs ($1.21M)
Type Security Shares Price Value
Sale Common Stock 5,149 $95.62 $492K
Sale Common Stock 1,534 $96.41 $148K
Sale Common Stock 1,190 $97.27 $116K
Sale Common Stock 4,626 $95.45 $442K
Sale Common Stock 100 $96.03 $10K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 793,076 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 $95.02 to $95.98, 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), (3) and (4) 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 $95.11 to $95.97, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.80, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.02 to $97.64, inclusive.
Total shares sold 12,599 shares Net open-market sales in Form 4 transaction summary
Direct holdings after transactions 790,352 shares Common Stock directly owned following latest sale
Indirect ESOP holdings 4,219 shares Common Stock held indirectly by ESOP as of June 24
Sale price example $97.27 per share Reported weighted-average price for 1,190-share sale on June 25
Largest single reported block 5,149 shares Open-market sale at $95.62 per share on June 25
Additional sale block 4,626 shares Open-market sale at $95.45 per share on June 24
open-market sale financial
"transaction_action": "open-market sale""
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""
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.
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.
Form 4 regulatory
"set forth in footnotes (1), (2), (3) and (4) to this Form 4."
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
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Learn about SEC filing dates
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)
06/24/2026
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 Stock06/24/2026S4,626D$95.45(1)798,325D
Common Stock06/24/2026S100D$96.03798,225D
Common Stock06/25/2026S5,149D$95.62(2)793,076D
Common Stock06/25/2026S1,534D$96.41(3)791,542D
Common Stock06/25/2026S1,190D$97.27(4)790,352D
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 $95.02 to $95.98, 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), (3) and (4) 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 $95.11 to $95.97, inclusive.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.80, inclusive.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.02 to $97.64, inclusive.
Remarks:
/s/ Seth L. Kaplan, as attorney-in-fact06/26/2026
** 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)

FAQ

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

GRIFFON CORP reported that President and COO Robert F. Mehmel sold 12,599 shares of Common Stock in open-market transactions. The sales occurred over June 24 and June 25 at weighted-average prices in the mid-$90s per share, according to the Form 4 filing.

At what prices did GFF’s President and COO sell his Griffon shares?

The reported sales used weighted-average prices ranging from $95.45 to $97.27 per share. Footnotes explain that each price reflects multiple trades within narrower ranges, with detailed price-by-trade data available from Griffon, shareholders, or SEC staff upon request.

How many Griffon (GFF) shares does Robert F. Mehmel hold after these sales?

After the reported transactions, Robert F. Mehmel holds 790,352 Griffon Common Stock shares directly. He also has 4,219 shares held indirectly through an ESOP, as shown in the filing’s ownership table for indirect holdings as of June 24.

Were Mehmel’s Griffon (GFF) transactions open-market sales or option exercises?

All reported transactions are coded “S” for sales of non-derivative Common Stock, indicating open-market or private sale transactions. The filing shows no derivative exercises, tax-withholding dispositions, or grants, and derivative positions are not listed in the derivative summary.

Does the Griffon (GFF) Form 4 show any indirect holdings for Robert F. Mehmel?

Yes. The Form 4 lists 4,219 Griffon Common Stock shares held indirectly “by ESOP.” This entry reflects shares attributable through an employee stock ownership plan, separate from Mehmel’s 790,352 directly owned shares following the reported sales.

How large is Robert F. Mehmel’s net share sale in the latest Griffon (GFF) filing?

The transaction summary in the filing shows net sales of 12,599 Griffon Common Stock shares. This figure aggregates all reported sale transactions over the two days, with no offsetting purchases, exercises, gifts, or tax-withholding events disclosed in the same Form 4.