Quick Takeaways
- GFF - GRIFFON CORP has 19 insiders with reported activity on this page.
- Net insider value flow over the last year: -$3,742,938.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 19 Insiders of GRIFFON CORP
- Symbol
- GFF on NYSE
- Location
- New York, NY
What Changed
- Buy value: $79,990; sell value: $3,822,928.
- Net share flow: -39,720.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$3,742,938.
Buys
$79,990
Shares: 1,000
Insiders: 1
Sells
$3,822,928
Shares: 40,720
Insiders: 5
Net
-$3,742,938
Shares: -39,720
Insiders: -4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 1,000 | 40,720 | $79,990 | $3,822,928 | -$3,742,938 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
GRIFFON CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ronald J. Kramer | Chairman of the Board and CEO, Director | $131,228,780 | Mixed | 24 Dec 2025 | ||
| Travis W. Cocke | Director, Other* | $87,385,385 | Mixed | 20 Feb 2024 | ||
| Robert F. Mehmel | President and COO | $61,462,846 | Mixed | 30 Nov 2025 | ||
| Brian G. Harris | EVP, Chief Financial Officer | $12,269,178 | Mixed | 30 Nov 2025 | ||
| Seth L. Kaplan | Sr VP, Gen. Counsel and Secy | $12,029,683 | -$1,431,664 | -11% | Mixed | 09 Feb 2026 |
| Henry A. Alpert | Director | $5,717,605 | +$79,990 | +1.4% | Filing P/S | 05 Mar 2026 |
| Kevin F. Sullivan | Director | $3,309,414 | Mixed | 18 Feb 2026 | ||
| Louis J. Grabowsky | Director | $3,227,470 | -$1,023,660 | -24% | Mixed | 18 Feb 2026 |
| W. Christopher Durborow | Vice President & CAO | $3,000,327 | -$919,700 | -23% | Mixed | 17 Feb 2026 |
| Robert G. Harrison | Director | $2,846,251 | Mixed | 03 Mar 2022 | ||
| Cheryl L. Turnbull | Director | $2,484,874 | Mixed | 18 Feb 2026 | ||
| Thomas Brosig | Director | $2,222,459 | Mixed | 03 Mar 2022 | ||
| Lacy M. Johnson | Director | $1,984,282 | Mixed | 18 Feb 2026 | ||
| Samanta Hegedus | Director | $1,955,167 | Mixed | 18 Feb 2026 | ||
| Victor Eugene Renuart | Director | $1,631,092 | Filing P/S | 20 Mar 2024 | ||
| Jerome L. Coben | Director | $1,460,203 | Mixed | 18 Feb 2026 | ||
| James W. Sight | Director | $1,141,508 | -$295,181 | -21% | Mixed | 18 Feb 2026 |
| H.c. Charles Diao | Director | $901,455 | Mixed | 18 Feb 2026 | ||
| Michelle L. Taylor | Director | $777,639 | -$152,724 | -16% | Mixed | 18 Feb 2026 |
Top shareholders of GRIFFON CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
12%
from 13D/G
|
5,934,213
|
$437,054,774 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
12%
|
5,855,976
|
$431,292,632 | — | 31 Dec 2025 | |
| Ronald J. Kramer |
3/4/5
|
Chairman of the Board and CEO, Director |
4.1%
|
1,929,835
|
$131,228,780 | — | 24 Dec 2025 | |
| Voss Capital, LP |
13F
|
Company |
3.7%
|
1,760,000
|
$129,624,000 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.3%
|
1,535,473
|
$113,087,586 | — | 31 Dec 2025 | |
| Travis W. Cocke |
3/4/5
|
Director, Other* |
—
class O/S missing
|
1,334,128
|
$87,385,385 | — | 20 Feb 2024 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.2%
|
1,048,366
|
$77,213,448 | — | 31 Dec 2025 | |
| FULLER & THALER ASSET MANAGEMENT, INC. |
13F
|
Company |
2.1%
|
1,002,513
|
$73,835,087 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2%
|
922,091
|
$67,921,926 | — | 31 Dec 2025 | |
| LSV ASSET MANAGEMENT |
13F
|
Company |
1.8%
|
867,195
|
$63,869,000 | — | 31 Dec 2025 | |
| Robert F. Mehmel |
3/4/5
|
President and COO |
1.7%
|
819,508
|
$61,462,846 | — | 30 Nov 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
1.6%
|
754,546
|
$55,572,000 | — | 31 Dec 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
1.5%
|
718,416
|
$52,911,328 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
1.4%
|
659,299
|
$48,557,371 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.2%
|
548,562
|
$40,401,591 | — | 31 Dec 2025 | |
| GAMCO INVESTORS, INC. ET AL |
13F
|
Company |
1.1%
|
512,145
|
$37,719,479 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.98%
|
460,251
|
$33,897,486 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.91%
|
426,591
|
$31,418,528 | — | 31 Dec 2025 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
|
Company |
0.87%
|
410,547
|
$30,236,789 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.87%
|
409,777
|
$30,180,077 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.86%
|
404,493
|
$29,792,000 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.82%
|
384,890
|
$28,347,149 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.8%
|
375,921
|
$27,686,609 | — | 31 Dec 2025 | |
| Boston Partners |
13F
|
Company |
0.77%
|
363,381
|
$27,567,891 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.79%
|
372,915
|
$27,465,226 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.74%
|
345,797
|
$25,467,949 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.7%
|
330,272
|
$24,324,534 | — | 31 Dec 2025 | |
| JENNISON ASSOCIATES LLC |
13F
|
Company |
0.7%
|
328,431
|
$24,188,943 | — | 31 Dec 2025 | |
| SEGALL BRYANT & HAMILL, LLC |
13F
|
Company |
0.69%
|
323,877
|
$23,853,551 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.65%
|
302,914
|
$22,309,569 | — | 31 Dec 2025 | |
| GABELLI FUNDS LLC |
13F
|
Company |
0.64%
|
298,500
|
$21,984,525 | — | 31 Dec 2025 | |
| SummitTX Capital, L.P. |
13F
|
Company |
0.62%
|
290,781
|
$21,416,021 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
0.53%
|
248,083
|
$18,271,313 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.5%
|
234,728
|
$17,287,717 | — | 31 Dec 2025 | |
| BESSEMER GROUP INC |
13F
|
Company |
0.5%
|
232,849
|
$17,149,000 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.49%
|
231,937
|
$17,082,160 | — | 31 Dec 2025 | |
| Wilmington Savings Fund Society, FSB |
13F
|
Company |
0.43%
|
202,785
|
$14,935,115 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.4%
|
186,490
|
$13,734,989 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.37%
|
175,835
|
$12,950,248 | — | 31 Dec 2025 | |
| Brian G. Harris |
3/4/5
|
EVP, Chief Financial Officer |
0.35%
|
163,593
|
$12,269,178 | — | 30 Nov 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.35%
|
164,097
|
$12,085,744 | — | 31 Dec 2025 | |
| Seth L. Kaplan |
3/4/5
|
Sr VP, Gen. Counsel and Secy |
0.27%
|
124,533
|
$12,029,683 | -$1,431,664 | 09 Feb 2026 | |
| Man Group plc |
13F
|
Company |
0.35%
|
162,758
|
$11,987,127 | — | 31 Dec 2025 | |
| Congruence Capital, LLC |
13F
|
Company |
0.35%
|
162,729
|
$11,984,992 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.32%
|
152,031
|
$11,197,100 | — | 31 Dec 2025 | |
| Aberdeen Group plc |
13F
|
Company |
0.32%
|
150,187
|
$11,061,272 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.29%
|
135,740
|
$9,997,251 | — | 31 Dec 2025 | |
| Dana Investment Advisors, Inc. |
13F
|
Company |
0.28%
|
131,763
|
$9,704,345 | — | 31 Dec 2025 | |
| LORD, ABBETT & CO. LLC |
13F
|
Company |
0.28%
|
130,624
|
$9,620,000 | — | 31 Dec 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.27%
|
128,545
|
$9,467,340 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for GRIFFON CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Henry A. Alpert | GFF | Common Stock | Purchase | 1.42% | $79,990 | $79.99 | 1,000 | 71,479 | 05 Mar 2026 | Direct |
| Louis J. Grabowsky | GFF | Common Stock | Award | 3.22% | 1,340 | 43,010 | 18 Feb 2026 | Direct | ||
| Lacy M. Johnson | GFF | Common Stock | Award | 5.34% | 1,340 | 26,443 | 18 Feb 2026 | Direct | ||
| Henry A. Alpert | GFF | Common Stock | Award | 1.94% | 1,340 | 70,479 | 18 Feb 2026 | Direct | ||
| Kevin F. Sullivan | GFF | Common Stock | Award | 3.13% | 1,340 | 44,102 | 18 Feb 2026 | Direct | ||
| James W. Sight | GFF | Common Stock | Award | 9.66% | 1,340 | 15,212 | 18 Feb 2026 | Direct | ||
| Samanta Hegedus | GFF | Common Stock | Award | 5.42% | 1,340 | 26,055 | 18 Feb 2026 | Direct | ||
| Cheryl L. Turnbull | GFF | Common Stock | Award | 4.23% | 1,340 | 33,039 | 18 Feb 2026 | Direct | ||
| Michelle L. Taylor | GFF | Common Stock | Award | 14.8% | 1,340 | 10,363 | 18 Feb 2026 | Direct | ||
| Jerome L. Coben | GFF | Common Stock | Award | 7.4% | 1,340 | 19,459 | 18 Feb 2026 | Direct | ||
| H.c. Charles Diao | GFF | Common Stock | Award | 12.6% | 1,340 | 12,013 | 18 Feb 2026 | Direct | ||
| W. Christopher Durborow | GFF | Common Stock | Sale | -25% | $919,700 | $91.97 | -10,000 | 29,963 | 17 Feb 2026 | Direct |
| Louis J. Grabowsky | GFF | Common Stock | Sale | -20.9% | $1,023,660 | $93.06 | -11,000 | 41,670 | 13 Feb 2026 | Direct |
| Michelle L. Taylor | GFF | Common Stock | Sale | -15.5% | $152,724 | $92.56 | -1,650 | 9,023 | 12 Feb 2026 | Direct |
| Seth L. Kaplan | GFF | Common Stock | Sale | -11.1% | $1,431,664 | $95.44 | -15,000 | 119,747 | 09 Feb 2026 | Direct |
| James W. Sight | GFF | Common Stock | Sale | -18.1% | $295,180 | $96.15 | -3,070 | 13,872 | 09 Feb 2026 | Direct |
| Ronald J. Kramer | GFF | Common Stock | Gift | -3.47% | -67,785 | 1,884,297 | 24 Dec 2025 | Direct | ||
| Seth L. Kaplan | GFF | Common Stock | Gift | -0.44% | -600 | 134,747 | 22 Dec 2025 | Direct | ||
| Henry A. Alpert | GFF | Common Stock | Gift | -3.02% | -2,150 | 69,139 | 04 Dec 2025 | Direct | ||
| Brian G. Harris | GFF | Common Stock | Tax liability | -4.58% | -7,610 | 158,649 | 30 Nov 2025 | Direct | ||
| Ronald J. Kramer | GFF | Common Stock | Tax liability | -3.66% | -74,079 | 1,952,082 | 30 Nov 2025 | Direct | ||
| Seth L. Kaplan | GFF | Common Stock | Tax liability | -6.18% | -8,921 | 135,347 | 30 Nov 2025 | Direct | ||
| W. Christopher Durborow | GFF | Common Stock | Tax liability | -9.8% | -4,343 | 39,963 | 30 Nov 2025 | Direct | ||
| Robert F. Mehmel | GFF | Common Stock | Tax liability | -3.2% | -26,928 | 815,289 | 30 Nov 2025 | Direct | ||
| Ronald J. Kramer | GFF | Common Stock | Award | 7.24% | 136,864 | 2,026,161 | 18 Nov 2025 | Direct | ||
| Robert F. Mehmel | GFF | Common Stock | Award | 8.84% | 68,432 | 842,217 | 18 Nov 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.