GFF · Insider Trading
Griffon Corp
Every open-market purchase and sale reported by GFF officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-11-06 | Robert F Mehmel | President and COO | Sell | −7,743 | −$833.31K |
| 2026-08-14 | Cheryl L Turnbull | Director | Sell | −3,000 | −$318.36K |
| 2026-08-14 | Kevin F Sullivan | Director | Sell | −3,500 | −$369.56K |
| 2026-08-13 | Robert F Mehmel | President and COO | Sell | −3,240 | −$347.20K |
| 2026-08-11 | Brian G Harris | EVP, Chief Financial Officer | Sell | −5,267 | −$564.15K |
| 2026-08-11 | Robert F Mehmel | President and COO | Sell | −22,567 | −$2.40M |
| 2026-08-07 | Ronald J Kramer | Chairman of the Board and CEO | Sell | −100,000 | −$10.24M |
| 2026-08-07 | Robert F Mehmel | President and COO | Sell | −37,061 | −$3.83M |
| 2026-08-07 | Brian G Harris | EVP, Chief Financial Officer | Sell | −11,050 | −$1.14M |
| 2026-07-02 | Brian G Harris | EVP, Chief Financial Officer | Sell | −6,183 | −$606.00K |
| 2026-07-02 | Robert F Mehmel | President and COO | Sell | −4,166 | −$407.27K |
| 2026-06-26 | Robert F Mehmel | President and COO | Sell | −12,599 | −$1.21M |
| 2026-06-18 | Robert F Mehmel | President and COO | Sell | −3,565 | −$340.05K |
| 2026-06-16 | Robert F Mehmel | President and COO | Sell | −8,773 | −$835.73K |
| 2026-06-15 | Brian G Harris | EVP, Chief Financial Officer | Sell | −7,500 | −$712.73K |
| 2026-06-15 | Ronald J Kramer | Chairman of the Board and CEO | Sell | −100,000 | −$9.49M |
| 2026-03-09 | Henry A Alpert | Director | Buy | +1,000 | +$79.99K |
| 2026-02-20 | Jerome L Coben | Director | A | +1,340 | — |
| 2026-02-20 | Louis J. Grabowsky | Director | A | +1,340 | — |
| 2026-02-20 | H.C. Charles Diao | Director | A | +1,340 | — |
| 2026-02-20 | Henry A Alpert | Director | A | +1,340 | — |
| 2026-02-20 | James W Sight | Director | A | +1,340 | — |
| 2026-02-20 | Kevin F Sullivan | Director | A | +1,340 | — |
| 2026-02-20 | Michelle L Taylor | Director | A | +1,340 | — |
| 2026-02-20 | Cheryl L Turnbull | Director | A | +1,340 | — |
| 2026-02-20 | Lacy M. Johnson | Director | A | +1,340 | — |
| 2026-02-20 | Samanta Hegedus | Director | A | +1,340 | — |
| 2026-02-18 | W. Christopher Durborow | Vice President & CAO | Sell | −10,000 | −$919.70K |
| 2026-02-17 | Michelle L Taylor | Director | Sell | −1,650 | −$152.72K |
| 2026-02-17 | Louis J. Grabowsky | Director | Sell | −11,000 | −$1.02M |
| 2026-02-11 | James W Sight | Director | Sell | −3,070 | −$295.18K |
| 2026-02-11 | Seth L. Kaplan | Sr VP, Gen. Counsel and Secy | Sell | −15,000 | −$1.43M |
| 2025-12-30 | Ronald J Kramer | Chairman of the Board and CEO | G | −67,785 | — |
| 2025-12-23 | Seth L. Kaplan | Sr VP, Gen. Counsel and Secy | G | −600 | — |
| 2025-12-08 | Henry A Alpert | Director | G | −2,150 | — |
| 2025-12-02 | Ronald J Kramer | Chairman of the Board and CEO | F | −74,079 | −$5.56M |
| 2025-12-02 | Brian G Harris | EVP, Chief Financial Officer | F | −7,610 | −$570.75K |
| 2025-12-02 | W. Christopher Durborow | Vice President & CAO | F | −4,343 | −$325.73K |
| 2025-12-02 | Robert F Mehmel | President and COO | F | −26,928 | −$2.02M |
| 2025-12-02 | Seth L. Kaplan | Sr VP, Gen. Counsel and Secy | F | −8,921 | −$669.08K |
| 2025-11-19 | Ronald J Kramer | Chairman of the Board and CEO | A | +136,864 | — |
| 2025-11-19 | Robert F Mehmel | President and COO | A | +68,432 | — |
| 2025-03-13 | H.C. Charles Diao | Director | A | +1,594 | — |
| 2025-03-13 | Louis J. Grabowsky | Director | A | +1,594 | — |
| 2025-03-13 | Michelle L Taylor | Director | A | +1,594 | — |
| 2025-03-13 | Samanta Hegedus | Director | A | +1,594 | — |
| 2025-03-13 | James W Sight | Director | A | +1,594 | — |
| 2025-03-13 | Cheryl L Turnbull | Director | A | +1,594 | — |
| 2025-03-13 | Kevin F Sullivan | Director | A | +1,594 | — |
| 2025-03-13 | Lacy M. Johnson | Director | A | +1,594 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Ronald J Kramer | Chairman of the Board and CEO | 1,749,117 | $186.75M |
| Robert F Mehmel | President and COO | 720,333 | $76.91M |
| Brian G Harris | EVP, Chief Financial Officer | 133,593 | $14.26M |
| Seth L. Kaplan | Sr VP, Gen. Counsel and Secy | 132,447 | $14.14M |
| Henry A Alpert | Director | 107,879 | $11.52M |
| Louis J. Grabowsky | Director | 43,010 | $4.59M |
| Kevin F Sullivan | Director | 40,602 | $4.34M |
| W. Christopher Durborow | Vice President & CAO | 33,223 | $3.55M |
| Cheryl L Turnbull | Director | 30,114 | $3.22M |
| Lacy M. Johnson | Director | 26,443 | $2.82M |
| Samanta Hegedus | Director | 26,055 | $2.78M |
| Jerome L Coben | Director | 19,459 | $2.08M |
| Victor Eugene Renuart | Director | 19,312 | $2.06M |
| James W Sight | Director | 15,212 | $1.62M |
| H.C. Charles Diao | Director | 12,013 | $1.28M |
| Michelle L Taylor | Director | 10,363 | $1.11M |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the GFF quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.