GFF
Griffon Corporation$93.22-0.59 (-0.63%)Prev Close$93.81·MCap$4.57B·P/E129.47·Vol225.7K·Yield0.01%
▲
Buys (12M)
1
$80.0K
▼
Sells (12M)
21
$36.67M
◆
Net Activity
Net Seller
$36.59M
●
Active Insiders
11
last 12 mo
Over the past 12 months, insider activity at Griffon Corporation (GFF) has been dominated by selling, with 1 insider purchase totaling $80.0K and 21 insider sales totaling $36.67M. The most recent insider transaction was by Sullivan Kevin F (director), who sold $369.6K worth of shares on Aug 14, 2026. Griffon Corporation operates in the Basic Materials sector, within the Construction Materials industry, with a market cap of $4.57B.
GFF Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Sullivan Kevin F | director | Sell | 3,500 | $105.59 | $369.6K | 40,602 |
| Aug 14, 2026 | TURNBULL CHERYL L | director | Sell | 3,000 | $106.12 | $318.4K | 30,039 |
| Aug 13, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 3,240 | $107.16 | $347.2K | 723,032 |
| Aug 11, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 22,567 | $106.47 | $2.40M | 746,928 |
| Aug 11, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 5,267 | $107.11 | $564.1K | 128,649 |
| Aug 7, 2026 | KRAMER RONALD J | director, officer: Chairman of the Board and CEO | Sell | 100,000 | $102.42 | $10.24M | 1,771,381 |
| Aug 7, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 37,061 | $103.32 | $3.83M | 785,283 |
| Aug 7, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 11,050 | $103.27 | $1.14M | 136,149 |
| Jul 2, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 4,166 | $97.76 | $407.3K | 785,900 |
| Jul 2, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 6,183 | $98.01 | $606.0K | 144,966 |
| Jun 30, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 286 | $95.66 | $27.4K | 790,122 |
| Jun 26, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 12,599 | $95.81 | $1.21M | 798,325 |
| Jun 18, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 3,565 | $95.39 | $340.1K | 803,595 |
| Jun 16, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 8,773 | $95.26 | $835.7K | 809,788 |
| Jun 15, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 7,500 | $95.03 | $712.7K | 151,149 |
| Jun 15, 2026 | KRAMER RONALD J | director, officer: Chairman of the Board and CEO | Sell | 100,000 | $94.92 | $9.49M | 1,833,268 |
| Mar 9, 2026 | ALPERT HENRY A | director | Buy | 1,000 | $79.99 | $80.0K | 71,479 |
| Feb 17, 2026 | Durborow W. Christopher | Vice President & CAO | Sell | 10,000 | $91.97 | $919.7K | 0 |
| Feb 13, 2026 | Grabowsky Louis J. | Director | Sell | 11,000 | $93.06 | $1.02M | 0 |
| Feb 12, 2026 | Taylor Michelle L | Director | Sell | 1,650 | $92.56 | $152.7K | 0 |
| Feb 11, 2026 | Kaplan Seth L. | officer: Sr VP, Gen. Counsel and Secy | Sell | 15,000 | $95.44 | $1.43M | 127,661 |
| Feb 11, 2026 | SIGHT JAMES W | director | Sell | 3,070 | $96.15 | $295.2K | 13,872 |
| Feb 10, 2025 | Hegedus Samanta | Director | Sell | 1,236 | $79.47 | $98.2K | 23,121 |
| Feb 7, 2025 | SIGHT JAMES W | Director | Sell | 1,360 | $81.00 | $110.2K | 15,348 |
| Feb 7, 2025 | TURNBULL CHERYL L | Director | Sell | 3,000 | $80.80 | $242.4K | 30,730 |
| Dec 6, 2024 | Durborow W. Christopher | Vice President & CAO | Sell | 5,170 | $80.38 | $415.6K | 44,306 |
| Dec 3, 2024 | Harris Brian G | EVP, Chief Financial Officer | Sell | 18,540 | $82.60 | $1.53M | 170,816 |
| Dec 3, 2024 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell | 12,666 | $82.73 | $1.05M | 148,607 |
| Nov 29, 2024 | Renuart Victor Eugene | Director | Sell | 10,784 | $51.03 | $550.3K | 27,196-28% |
| Nov 20, 2024 | Sullivan Kevin F | Director | Sell | 9,222 | $75.50 | $696.3K | 41,168 |
| Nov 15, 2024 | Coben Jerome L | Director | Sell | 2,052 | $76.34 | $156.7K | 16,525 |
| Nov 15, 2024 | Grabowsky Louis J. | Director | Sell | 11,000 | $77.02 | $847.3K | 51,176 |
| Nov 15, 2024 | Hegedus Samanta | Director | Sell | 3,095 | $80.49 | $249.1K | 24,357 |
| Nov 15, 2024 | MEHMEL ROBERT F | President and COO | Sell | 25,000 | $74.97 | $1.87M | 736,133 |
| Nov 15, 2024 | SIGHT JAMES W | Director | Sell | 3,660 | $76.42 | $279.7K | 16,708 |
| Nov 13, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 308,921 | $74.20 | $22.92M0.7% OS | 2,102,503 |
| Nov 13, 2024 | MEHMEL ROBERT F | President and COO | Sell | 8,697 | $70.10 | $609.7K | 737,914 |
| Oct 18, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 6,532 | $70.06 | $457.6K | 2,169,667 |
| Oct 18, 2024 | MEHMEL ROBERT F | President and COO | Sell | 912 | $70.06 | $63.9K | 746,611 |
| Oct 4, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 300 | $70.07 | $21.0K | 2,176,199 |
| Oct 1, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 18,632 | $70.02 | $1.30M | 2,181,441 |
| Oct 1, 2024 | MEHMEL ROBERT F | President and COO | Sell | 3,349 | $70.04 | $234.6K | 747,607 |
| Sep 25, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 20,135 | $70.01 | $1.41M | 2,195,131 |
| Sep 25, 2024 | MEHMEL ROBERT F | President and COO | Sell | 3,174 | $70.01 | $222.2K | 750,872 |
| Sep 23, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 45,480 | $70.05 | $3.19M | 2,221,499 |
| Sep 23, 2024 | MEHMEL ROBERT F | President and COO | Sell | 8,868 | $70.03 | $621.0K | 755,251 |
| Sep 20, 2024 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell | 35,274 | $70.00 | $2.47M | 198,571 |
| Sep 19, 2024 | Harris Brian G | SVP, Chief Financial Officer | Sell | 5,819 | $67.65 | $393.7K | 193,678 |
| Sep 19, 2024 | MEHMEL ROBERT F | President and COO | Sell | 25,000 | $68.04 | $1.70M | 778,766 |
| Sep 17, 2024 | Harris Brian G | SVP, Chief Financial Officer | Sell | 13,565 | $66.13 | $897.0K | 203,062 |
Showing 1–50 of 66
1 / 2
GFF Insider Buying Activity
The following table shows recent insider purchases of Griffon Corporation (GFF) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Mar 9, 2026 | ALPERT HENRY A | director | Buy | 1,000 | $79.99 | $80.0K | 71,479 |
GFF Insider Selling Activity
The following table shows recent insider sales of Griffon Corporation (GFF) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Sullivan Kevin F | director | Sell | 3,500 | $105.59 | $369.6K | 40,602 |
| Aug 14, 2026 | TURNBULL CHERYL L | director | Sell | 3,000 | $106.12 | $318.4K | 30,039 |
| Aug 13, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 3,240 | $107.16 | $347.2K | 723,032 |
| Aug 11, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 22,567 | $106.47 | $2.40M | 746,928 |
| Aug 11, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 5,267 | $107.11 | $564.1K | 128,649 |
| Aug 7, 2026 | KRAMER RONALD J | director, officer: Chairman of the Board and CEO | Sell | 100,000 | $102.42 | $10.24M | 1,771,381 |
| Aug 7, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 37,061 | $103.32 | $3.83M | 785,283 |
| Aug 7, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 11,050 | $103.27 | $1.14M | 136,149 |
| Jul 2, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 4,166 | $97.76 | $407.3K | 785,900 |
| Jul 2, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 6,183 | $98.01 | $606.0K | 144,966 |
| Jun 30, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 286 | $95.66 | $27.4K | 790,122 |
| Jun 26, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 12,599 | $95.81 | $1.21M | 798,325 |
| Jun 18, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 3,565 | $95.39 | $340.1K | 803,595 |
| Jun 16, 2026 | MEHMEL ROBERT F | officer: President and COO | Sell | 8,773 | $95.26 | $835.7K | 809,788 |
| Jun 15, 2026 | Harris Brian G | officer: EVP, Chief Financial Officer | Sell | 7,500 | $95.03 | $712.7K | 151,149 |
| Jun 15, 2026 | KRAMER RONALD J | director, officer: Chairman of the Board and CEO | Sell | 100,000 | $94.92 | $9.49M | 1,833,268 |
| Feb 17, 2026 | Durborow W. Christopher | Vice President & CAO | Sell | 10,000 | $91.97 | $919.7K | 0 |
| Feb 13, 2026 | Grabowsky Louis J. | Director | Sell | 11,000 | $93.06 | $1.02M | 0 |
| Feb 12, 2026 | Taylor Michelle L | Director | Sell | 1,650 | $92.56 | $152.7K | 0 |
| Feb 11, 2026 | Kaplan Seth L. | officer: Sr VP, Gen. Counsel and Secy | Sell | 15,000 | $95.44 | $1.43M | 127,661 |
| Feb 11, 2026 | SIGHT JAMES W | director | Sell | 3,070 | $96.15 | $295.2K | 13,872 |
| Feb 10, 2025 | Hegedus Samanta | Director | Sell | 1,236 | $79.47 | $98.2K | 23,121 |
| Feb 7, 2025 | SIGHT JAMES W | Director | Sell | 1,360 | $81.00 | $110.2K | 15,348 |
| Feb 7, 2025 | TURNBULL CHERYL L | Director | Sell | 3,000 | $80.80 | $242.4K | 30,730 |
| Dec 6, 2024 | Durborow W. Christopher | Vice President & CAO | Sell | 5,170 | $80.38 | $415.6K | 44,306 |
| Dec 3, 2024 | Harris Brian G | EVP, Chief Financial Officer | Sell | 18,540 | $82.60 | $1.53M | 170,816 |
| Dec 3, 2024 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell | 12,666 | $82.73 | $1.05M | 148,607 |
| Nov 29, 2024 | Renuart Victor Eugene | Director | Sell | 10,784 | $51.03 | $550.3K | 27,196-28% |
| Nov 20, 2024 | Sullivan Kevin F | Director | Sell | 9,222 | $75.50 | $696.3K | 41,168 |
| Nov 15, 2024 | Coben Jerome L | Director | Sell | 2,052 | $76.34 | $156.7K | 16,525 |
| Nov 15, 2024 | Grabowsky Louis J. | Director | Sell | 11,000 | $77.02 | $847.3K | 51,176 |
| Nov 15, 2024 | Hegedus Samanta | Director | Sell | 3,095 | $80.49 | $249.1K | 24,357 |
| Nov 15, 2024 | MEHMEL ROBERT F | President and COO | Sell | 25,000 | $74.97 | $1.87M | 736,133 |
| Nov 15, 2024 | SIGHT JAMES W | Director | Sell | 3,660 | $76.42 | $279.7K | 16,708 |
| Nov 13, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 308,921 | $74.20 | $22.92M0.7% OS | 2,102,503 |
| Nov 13, 2024 | MEHMEL ROBERT F | President and COO | Sell | 8,697 | $70.10 | $609.7K | 737,914 |
| Oct 18, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 6,532 | $70.06 | $457.6K | 2,169,667 |
| Oct 18, 2024 | MEHMEL ROBERT F | President and COO | Sell | 912 | $70.06 | $63.9K | 746,611 |
| Oct 4, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 300 | $70.07 | $21.0K | 2,176,199 |
| Oct 1, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 18,632 | $70.02 | $1.30M | 2,181,441 |
| Oct 1, 2024 | MEHMEL ROBERT F | President and COO | Sell | 3,349 | $70.04 | $234.6K | 747,607 |
| Sep 25, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 20,135 | $70.01 | $1.41M | 2,195,131 |
| Sep 25, 2024 | MEHMEL ROBERT F | President and COO | Sell | 3,174 | $70.01 | $222.2K | 750,872 |
| Sep 23, 2024 | KRAMER RONALD J | Chairman of the Board and CEO | Sell | 45,480 | $70.05 | $3.19M | 2,221,499 |
| Sep 23, 2024 | MEHMEL ROBERT F | President and COO | Sell | 8,868 | $70.03 | $621.0K | 755,251 |
| Sep 20, 2024 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell | 35,274 | $70.00 | $2.47M | 198,571 |
| Sep 19, 2024 | Harris Brian G | SVP, Chief Financial Officer | Sell | 5,819 | $67.65 | $393.7K | 193,678 |
| Sep 19, 2024 | MEHMEL ROBERT F | President and COO | Sell | 25,000 | $68.04 | $1.70M | 778,766 |
| Sep 17, 2024 | Harris Brian G | SVP, Chief Financial Officer | Sell | 13,565 | $66.13 | $897.0K | 203,062 |
GFF Insiders
KRAMER RONALD J
director, officer: Chairman of the Board and CEO
Sold $61.97M
10 tradesLast: Aug 7, 2026
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