Company · Ownership research

GRIFFON CORP GFF

CIK 0000050725

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdingsInstitutional holders

Insider filings on file run through 2026-08-14.

Insider purchases & sales

Purchased: $79.99K
Sold: $98.51M

Sep 1, 2023 – Aug 14, 2026
Available records · partial months are marked ·

202610 of 27 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-08-13	TURNBULL CHERYL L Director	Sale	$318.36K 3,000 shares sold	9.08% sold Direct holding	▾
2026-08-13	Sullivan Kevin F Director	Sale	$369.56K 3,500 shares sold	7.94% sold Direct holding	▾
2026-08-11	MEHMEL ROBERT F President and COO	Sale	$347.20K 3,240 shares sold	0.45% sold Direct holding	▾
2026-08-10	MEHMEL ROBERT F President and COO	Sale	$692.72K 6,639 shares sold	0.91% sold Direct holding	▾
2026-08-07	MEHMEL ROBERT F President and COO	Sale	$1.71M 15,928 shares sold	2.13% sold Direct holding	▾
2026-08-07	Harris Brian G EVP, Chief Financial Officer	Sale	$564.15K 5,267 shares sold	3.93% sold Direct holding	▾
2026-08-06	MEHMEL ROBERT F President and COO	Sale	$1.56M 14,852 shares sold	1.94% sold Direct holding	▾
2026-08-05	Harris Brian G EVP, Chief Financial Officer	Sale	$1.14M 11,050 shares sold	7.62% sold Direct holding	▾
2026-08-05	KRAMER RONALD J Chairman of the Board and CEO · Director	Sale	$10.24M 100,000 shares sold	5.60% sold Direct holding	▾
2026-08-05	MEHMEL ROBERT F President and COO	Sale	$2.27M 22,209 shares sold	2.83% sold Direct holding	▾

Showing 27 / 27 record groups in 2026. The complete set is available through the API.

GRIFFON CORP · GFF

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 27 of 27 purchase / sale groups and 10 of 10 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"GFF","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.