Griffon Corp (GFF) · Insider trading
What Griffon's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$79,990
1 insider, 1 trade
Sold, 12 months
$36.67M
10 insiders, 62% under a plan
Net, 12 months
−$36.59M
bought less sold
Latest filing
2026-08-14
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Kramer Ronald JDirector, Chairman of the Board and CEO | – | $42.66M | 16 | 2026-08-05 | 1,771,381 |
| Mehmel Robert FPresident and COO | – | $11.88M | 39 | 2026-08-11 | 723,032 |
| Harris Brian GEVP, Chief Financial Officer | – | $4.56M | 7 | 2026-08-07 | 128,649 |
| Kaplan Seth L.Sr VP, Gen. Counsel and Secy | – | $2.48M | 7 | 2026-02-09 | 127,661 |
| Grabowsky Louis J.Director | – | $1.87M | 3 | 2026-02-13 | 41,670 |
| Durborow W. ChristopherVice President & CAO | – | $1.34M | 2 | 2026-02-17 | 29,963 |
| Sullivan Kevin FDirector | – | $1.07M | 2 | 2026-08-13 | 40,602 |
| Sight James WDirector | – | $685,038 | 3 | 2026-02-09 | 13,872 |
| Turnbull Cheryl LDirector | – | $560,760 | 2 | 2026-08-13 | 30,039 |
| Renuart Victor EugeneDirector | – | $380,070 | 1 | 2024-11-26 | 19,312 |
| Hegedus SamantaDirector | – | $347,341 | 2 | 2025-02-07 | 23,121 |
| Coben Jerome LDirector | – | $156,650 | 1 | 2024-11-14 | 16,525 |
| Taylor Michelle LDirector | – | $152,724 | 1 | 2026-02-12 | 9,023 |
| Alpert Henry ADirector | $79,990 | – | 1 | 2026-03-05 | 71,479 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-13 | Sullivan Kevin FDirector | Sale | 3,500 | 105.59 | $369,565 | 40,602 | Form 4 |
| 2026-08-13 | Turnbull Cheryl LDirector | Sale | 3,000 | 106.12 | $318,360 | 30,039 | Form 4 |
| 2026-08-11 | Mehmel Robert FPresident and COO | Saleplan | 3,240 | 107.16 | $347,198 | 723,032 | Form 4 |
| 2026-08-10 | Mehmel Robert FPresident and COO | Saleplan | 3,638 | 104.08 | $378,643 | 729,273 | Form 4 |
| 2026-08-10 | Mehmel Robert FPresident and COO | Saleplan | 2,913 | 104.64 | $304,816 | 726,360 | Form 4 |
| 2026-08-10 | Mehmel Robert FPresident and COO | Saleplan | 88 | 105.21 | $9,258 | 726,272 | Form 4 |
| 2026-08-07 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 5,267 | 107.11 | $564,148 | 128,649 | Form 4 |
| 2026-08-07 | Mehmel Robert FPresident and COO | Saleplan | 1,911 | 106.60 | $203,713 | 746,928 | Form 4 |
| 2026-08-07 | Mehmel Robert FPresident and COO | Saleplan | 13,464 | 107.43 | $1.45M | 733,464 | Form 4 |
| 2026-08-07 | Mehmel Robert FPresident and COO | Saleplan | 553 | 108.09 | $59,774 | 732,911 | Form 4 |
| 2026-08-06 | Mehmel Robert FPresident and COO | Saleplan | 158 | 102.03 | $16,121 | 763,533 | Form 4 |
| 2026-08-06 | Mehmel Robert FPresident and COO | Saleplan | 211 | 103.52 | $21,843 | 763,322 | Form 4 |
| 2026-08-06 | Mehmel Robert FPresident and COO | Saleplan | 5,476 | 104.56 | $572,571 | 757,846 | Form 4 |
| 2026-08-06 | Mehmel Robert FPresident and COO | Saleplan | 6,933 | 105.46 | $731,154 | 750,913 | Form 4 |
| 2026-08-06 | Mehmel Robert FPresident and COO | Saleplan | 2,074 | 106.27 | $220,404 | 748,839 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 617 | 98.68 | $60,886 | 785,283 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 2,283 | 99.67 | $227,547 | 783,000 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 3,527 | 100.46 | $354,322 | 779,473 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 2,790 | 101.44 | $283,018 | 776,683 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 5,341 | 102.59 | $547,933 | 771,342 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 5,434 | 103.53 | $562,582 | 765,908 | Form 4 |
| 2026-08-05 | Mehmel Robert FPresident and COO | Saleplan | 2,217 | 104.12 | $230,834 | 763,691 | Form 4 |
| 2026-08-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 12,916 | 100.44 | $1.30M | 1,771,381 | Form 4 |
| 2026-08-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 17,322 | 101.58 | $1.76M | 1,754,059 | Form 4 |
| 2026-08-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 45,240 | 102.63 | $4.64M | 1,708,819 | Form 4 |
| 2026-08-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 16,402 | 103.37 | $1.70M | 1,692,417 | Form 4 |
| 2026-08-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 8,120 | 104.27 | $846,672 | 1,684,297 | Form 4 |
| 2026-08-05 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 8,817 | 103.08 | $908,856 | 136,149 | Form 4 |
| 2026-08-05 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 2,233 | 104.01 | $232,254 | 133,916 | Form 4 |
| 2026-06-30 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 6,183 | 98.01 | $605,996 | 144,966 | Form 4 |
| 2026-06-30 | Mehmel Robert FPresident and COO | Saleplan | 4,166 | 97.76 | $407,268 | 785,900 | Form 4 |
| 2026-06-26 | Mehmel Robert FPresident and COO | Saleplan | 230 | 95.52 | $21,970 | 790,122 | Form 4 |
| 2026-06-26 | Mehmel Robert FPresident and COO | Saleplan | 52 | 96.14 | $4,999 | 790,070 | Form 4 |
| 2026-06-26 | Mehmel Robert FPresident and COO | Saleplan | 4 | 97.50 | $390 | 790,066 | Form 4 |
| 2026-06-25 | Mehmel Robert FPresident and COO | Saleplan | 5,149 | 95.62 | $492,347 | 793,076 | Form 4 |
| 2026-06-25 | Mehmel Robert FPresident and COO | Saleplan | 1,534 | 96.41 | $147,893 | 791,542 | Form 4 |
| 2026-06-25 | Mehmel Robert FPresident and COO | Saleplan | 1,190 | 97.27 | $115,751 | 790,352 | Form 4 |
| 2026-06-24 | Mehmel Robert FPresident and COO | Saleplan | 4,626 | 95.45 | $441,552 | 798,325 | Form 4 |
| 2026-06-24 | Mehmel Robert FPresident and COO | Saleplan | 100 | 96.03 | $9,603 | 798,225 | Form 4 |
| 2026-06-17 | Mehmel Robert FPresident and COO | Saleplan | 547 | 95.37 | $52,167 | 802,951 | Form 4 |
47 more
| 2026-06-16 | Mehmel Robert FPresident and COO | Saleplan | 2,921 | 95.36 | $278,547 | 803,595 | Form 4 |
| 2026-06-16 | Mehmel Robert FPresident and COO | Saleplan | 97 | 96.25 | $9,336 | 803,498 | Form 4 |
| 2026-06-15 | Mehmel Robert FPresident and COO | Saleplan | 3,272 | 95.40 | $312,149 | 806,516 | Form 4 |
| 2026-06-12 | Mehmel Robert FPresident and COO | Saleplan | 5,501 | 95.18 | $523,585 | 809,788 | Form 4 |
| 2026-06-12 | Kramer Ronald JDirector, Chairman of the Board and CEO | Sale | 51,029 | 95.21 | $4.86M | 1,833,268 | Form 4 |
| 2026-06-12 | Kramer Ronald JDirector, Chairman of the Board and CEO | Sale | 48,971 | 94.62 | $4.63M | 1,784,297 | Form 4 |
| 2026-06-11 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 7,500 | 95.03 | $712,725 | 151,149 | Form 4 |
| 2026-03-05 | Alpert Henry ADirector | Buy | 1,000 | 79.99 | $79,990 | 71,479 | Form 4 |
| 2026-02-17 | Durborow W. ChristopherVice President & CAO | Sale | 10,000 | 91.97 | $919,700 | 29,963 | Form 4 |
| 2026-02-13 | Grabowsky Louis J.Director | Sale | 11,000 | 93.06 | $1.02M | 41,670 | Form 4 |
| 2026-02-12 | Taylor Michelle LDirector | Sale | 1,650 | 92.56 | $152,724 | 9,023 | Form 4 |
| 2026-02-09 | Sight James WDirector | Sale | 3,070 | 96.15 | $295,180 | 13,872 | Form 4 |
| 2026-02-09 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Sale | 7,086 | 94.67 | $670,832 | 127,661 | Form 4 |
| 2026-02-09 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Sale | 4,274 | 95.61 | $408,637 | 123,387 | Form 4 |
| 2026-02-09 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Sale | 3,240 | 96.67 | $313,211 | 120,147 | Form 4 |
| 2026-02-09 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Sale | 400 | 97.46 | $38,984 | 119,747 | Form 4 |
| 2025-02-07 | Hegedus SamantaDirector | Sale | 1,236 | 79.47 | $98,225 | 23,121 | Form 4 |
| 2025-02-06 | Sight James WDirector | Sale | 1,360 | 81.00 | $110,160 | 15,348 | Form 4 |
| 2025-02-06 | Turnbull Cheryl LDirector | Sale | 3,000 | 80.80 | $242,400 | 30,730 | Form 4 |
| 2024-12-06 | Durborow W. ChristopherVice President & CAO | Sale | 5,170 | 80.38 | $415,565 | 44,306 | Form 4 |
| 2024-12-02 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 13,983 | 82.43 | $1.15M | 170,816 | Form 4 |
| 2024-12-02 | Harris Brian GEVP, Chief Financial Officer | Saleplan | 4,557 | 83.11 | $378,732 | 166,259 | Form 4 |
| 2024-12-02 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Saleplan | 8,327 | 82.40 | $686,145 | 148,607 | Form 4 |
| 2024-12-02 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Saleplan | 4,239 | 83.35 | $353,321 | 144,368 | Form 4 |
| 2024-12-02 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Saleplan | 100 | 83.97 | $8,397 | 144,268 | Form 4 |
| 2024-11-26 | Renuart Victor EugeneDirector | Sale | 4,500 | 84.46 | $380,070 | 19,312 | Form 4 |
| 2024-11-18 | Sullivan Kevin FDirector | Sale | 9,222 | 75.50 | $696,261 | 41,168 | Form 4 |
| 2024-11-14 | Grabowsky Louis J.Director | Sale | 10,900 | 77.02 | $839,518 | 51,176 | Form 4 |
| 2024-11-14 | Grabowsky Louis J.Director | Sale | 100 | 77.53 | $7,753 | 51,076 | Form 4 |
| 2024-11-14 | Hegedus SamantaDirector | Sale | 3,095 | 80.49 | $249,117 | 24,357 | Form 4 |
| 2024-11-14 | Coben Jerome LDirector | Sale | 2,052 | 76.34 | $156,650 | 16,525 | Form 4 |
| 2024-11-14 | Sight James WDirector | Sale | 3,660 | 76.42 | $279,697 | 16,708 | Form 4 |
| 2024-11-13 | Mehmel Robert FPresident and COO | Saleplan | 1,781 | 73.13 | $130,245 | 736,133 | Form 4 |
| 2024-11-13 | Mehmel Robert FPresident and COO | Saleplan | 1,719 | 74.24 | $127,619 | 734,414 | Form 4 |
| 2024-11-13 | Mehmel Robert FPresident and COO | Saleplan | 7,664 | 74.82 | $573,420 | 726,750 | Form 4 |
| 2024-11-13 | Mehmel Robert FPresident and COO | Saleplan | 12,653 | 75.30 | $952,771 | 714,097 | Form 4 |
| 2024-11-13 | Mehmel Robert FPresident and COO | Saleplan | 1,183 | 76.20 | $90,145 | 712,914 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 4,100 | 71.32 | $292,412 | 2,098,403 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 5,536 | 72.43 | $400,972 | 2,092,867 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 11,020 | 73.39 | $808,758 | 2,081,847 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 80,105 | 74.72 | $5.99M | 2,001,742 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 90,741 | 75.34 | $6.84M | 1,911,001 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 17,000 | 76.43 | $1.30M | 1,894,001 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 15,148 | 77.45 | $1.17M | 1,878,853 | Form 4 |
| 2024-11-13 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 18,107 | 78.39 | $1.42M | 1,860,746 | Form 4 |
| 2024-11-11 | Mehmel Robert FPresident and COO | Saleplan | 8,697 | 70.10 | $609,660 | 737,914 | Form 4 |
| 2024-11-11 | Kramer Ronald JDirector, Chairman of the Board and CEO | Saleplan | 67,164 | 70.08 | $4.71M | 2,102,503 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
27 × grant or award10 × gift10 × shares withheld for tax
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-02-18 | Diao H.c. CharlesDirector | Grant or award A | +1,340 | – | 12,013 | Form 4 |
| 2026-02-18 | Coben Jerome LDirector | Grant or award A | +1,340 | – | 19,459 | Form 4 |
| 2026-02-18 | Taylor Michelle LDirector | Grant or award A | +1,340 | – | 10,363 | Form 4 |
| 2026-02-18 | Turnbull Cheryl LDirector | Grant or award A | +1,340 | – | 33,039 | Form 4 |
| 2026-02-18 | Hegedus SamantaDirector | Grant or award A | +1,340 | – | 26,055 | Form 4 |
| 2026-02-18 | Sight James WDirector | Grant or award A | +1,340 | – | 15,212 | Form 4 |
| 2026-02-18 | Sullivan Kevin FDirector | Grant or award A | +1,340 | – | 44,102 | Form 4 |
| 2026-02-18 | Alpert Henry ADirector | Grant or award A | +1,340 | – | 70,479 | Form 4 |
| 2026-02-18 | Johnson Lacy M.Director | Grant or award A | +1,340 | – | 26,443 | Form 4 |
| 2026-02-18 | Grabowsky Louis J.Director | Grant or award A | +1,340 | – | 43,010 | Form 4 |
| 2025-12-24 | Kramer Ronald JDirector, Chairman of the Board and CEO | Gift G | −62,785 | – | 1,889,297 | Form 4 |
| 2025-12-24 | Kramer Ronald JDirector, Chairman of the Board and CEO | Gift G | −5,000 | – | 1,884,297 | Form 4 |
| 2025-12-22 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Gift G | −600 | – | 134,747 | Form 4 |
| 2025-12-04 | Alpert Henry ADirector | Gift G | −2,150 | – | 69,139 | Form 4 |
| 2025-11-30 | Mehmel Robert FPresident and COO | Shares withheld for tax F | −26,928 | 75.00 | 815,289 | Form 4 |
| 2025-11-30 | Durborow W. ChristopherVice President & CAO | Shares withheld for tax F | −4,343 | 75.00 | 39,963 | Form 4 |
| 2025-11-30 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Shares withheld for tax F | −8,921 | 75.00 | 135,347 | Form 4 |
| 2025-11-30 | Kramer Ronald JDirector, Chairman of the Board and CEO | Shares withheld for tax F | −74,079 | 75.00 | 1,952,082 | Form 4 |
| 2025-11-30 | Harris Brian GEVP, Chief Financial Officer | Shares withheld for tax F | −7,610 | 75.00 | 158,649 | Form 4 |
| 2025-11-18 | Mehmel Robert FPresident and COO | Grant or award A | +68,432 | – | 842,217 | Form 4 |
| 2025-11-18 | Kramer Ronald JDirector, Chairman of the Board and CEO | Grant or award A | +136,864 | – | 2,026,161 | Form 4 |
| 2025-03-11 | Grabowsky Louis J.Director | Grant or award A | +1,594 | – | 52,670 | Form 4 |
| 2025-03-11 | Taylor Michelle LDirector | Grant or award A | +1,594 | – | 10,673 | Form 4 |
| 2025-03-11 | Diao H.c. CharlesDirector | Grant or award A | +1,594 | – | 10,673 | Form 4 |
| 2025-03-11 | Turnbull Cheryl LDirector | Grant or award A | +1,594 | – | 31,699 | Form 4 |
| 2025-03-11 | Sight James WDirector | Grant or award A | +1,594 | – | 16,942 | Form 4 |
| 2025-03-11 | Hegedus SamantaDirector | Grant or award A | +1,594 | – | 24,715 | Form 4 |
| 2025-03-11 | Johnson Lacy M.Director | Grant or award A | +1,594 | – | 25,103 | Form 4 |
| 2025-03-11 | Coben Jerome LDirector | Grant or award A | +1,594 | – | 18,119 | Form 4 |
| 2025-03-11 | Alpert Henry ADirector | Grant or award A | +1,594 | – | 71,289 | Form 4 |
| 2025-03-11 | Sullivan Kevin FDirector | Grant or award A | +1,594 | – | 42,762 | Form 4 |
| 2025-02-27 | Alpert Henry ADirector | Gift G | −1,466 | – | 69,695 | Form 4 |
| 2025-02-04 | Mehmel Robert FPresident and COO | Grant or award A | +36,000 | – | 733,914 | Form 4 |
| 2025-02-04 | Mehmel Robert FPresident and COO | Grant or award A | +151,382 | – | 885,296 | Form 4 |
| 2025-02-04 | Mehmel Robert FPresident and COO | Shares withheld for tax F | −111,511 | 76.95 | 773,785 | Form 4 |
| 2025-02-04 | Kramer Ronald JDirector, Chairman of the Board and CEO | Grant or award A | +108,000 | – | 1,964,746 | Form 4 |
| 2025-02-04 | Kramer Ronald JDirector, Chairman of the Board and CEO | Grant or award A | +302,764 | – | 2,267,510 | Form 4 |
| 2025-02-04 | Kramer Ronald JDirector, Chairman of the Board and CEO | Shares withheld for tax F | −378,213 | 76.95 | 1,889,297 | Form 4 |
| 2024-12-05 | Kramer Ronald JDirector, Chairman of the Board and CEO | Gift G | −4,000 | – | 1,856,746 | Form 4 |
| 2024-11-30 | Harris Brian GEVP, Chief Financial Officer | Shares withheld for tax F | −8,879 | 84.30 | 184,799 | Form 4 |
| 2024-11-30 | Durborow W. ChristopherVice President & CAO | Shares withheld for tax F | −5,243 | 84.30 | 49,476 | Form 4 |
| 2024-11-30 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Shares withheld for tax F | −10,407 | 84.30 | 156,934 | Form 4 |
| 2024-11-27 | Mehmel Robert FPresident and COO | Gift G | −15,000 | – | 697,914 | Form 4 |
| 2024-11-19 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Gift G | −400 | – | 167,341 | Form 4 |
| 2024-11-18 | Alpert Henry ADirector | Gift G | −3,234 | – | 71,161 | Form 4 |
| 2024-11-18 | Kaplan Seth L.Sr VP, Gen. Counsel and Secy | Gift G | −400 | – | 167,741 | Form 4 |
| 2024-11-12 | Durborow W. ChristopherVice President & CAO | Grant or award A | +6,351 | – | 54,719 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.