As of March 23, 2026, Griffon's top three insider holders are Ronald J Kramer (Chairman Of The Board And Ceo, 1.88Mn shares), Robert F Mehmel (President And Coo, 815.29K shares), Brian G Harris (Evp, Chief Financial Officer, 158.65K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Ronald J Kramer | Chairman Of The Board And Ceo | 1,884,297 | 0 | 30 Dec, 2025 |
| Robert F Mehmel | President And Coo | 815,289 | 0 | 02 Dec, 2025 |
| Brian G Harris | Evp, Chief Financial Officer | 158,649 | 0 | 02 Dec, 2025 |
| Seth L. Kaplan | Sr Vp, Gen. Counsel And Secy | 119,747 | 0 | 11 Feb, 2026 |
| Travis W. Cocke | 276 | 93,499 | 22 Feb, 2024 | |
| Henry A Alpert | 71,479 | 0 | 09 Mar, 2026 | |
| Robert G Harrison | 50,296 | 0 | 04 Mar, 2022 | |
| Kevin F Sullivan | 44,102 | 0 | 20 Feb, 2026 | |
| Louis J. Grabowsky | 43,010 | 0 | 20 Feb, 2026 | |
| Thomas Brosig | 39,273 | 0 | 04 Mar, 2022 | |
| Victor Eugene Renuart | 36,442 | 0 | 22 Mar, 2024 | |
| Cheryl L Turnbull | 33,039 | 0 | 20 Feb, 2026 | |
| W. Christopher Durborow | Vice President Cao | 29,963 | 0 | 18 Feb, 2026 |
| Lacy M. Johnson | 26,443 | 0 | 20 Feb, 2026 | |
| Samanta Hegedus | 26,055 | 0 | 20 Feb, 2026 | |
| Jerome L Coben | 19,459 | 0 | 20 Feb, 2026 | |
| James W Sight | 15,212 | 0 | 20 Feb, 2026 | |
| H.C. Charles Diao | 12,013 | 0 | 20 Feb, 2026 | |
| Michelle L Taylor | 10,363 | 0 | 20 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 05 Mar, 2026 | Henry A Alpert | Common Stock | A | 1,000 | $79.99 | 71,479 | D | P |
| 18 Feb, 2026 | Cheryl L Turnbull | Common Stock | A | 1,340 | $0.00 | 33,039 | D | A |
| 18 Feb, 2026 | James W Sight | Common Stock | A | 1,340 | $0.00 | 15,212 | D | A |
| 18 Feb, 2026 | Jerome L Coben | Common Stock | A | 1,340 | $0.00 | 19,459 | D | A |
| 18 Feb, 2026 | Kevin F Sullivan | Common Stock | A | 1,340 | $0.00 | 44,102 | D | A |
| 18 Feb, 2026 | Henry A Alpert | Common Stock | A | 1,340 | $0.00 | 70,479 | D | A |
| 18 Feb, 2026 | H.C. Charles Diao | Common Stock | A | 1,340 | $0.00 | 12,013 | D | A |
| 18 Feb, 2026 | Samanta Hegedus | Common Stock | A | 1,340 | $0.00 | 26,055 | D | A |
| 18 Feb, 2026 | Lacy M. Johnson | Common Stock | A | 1,340 | $0.00 | 26,443 | D | A |
| 18 Feb, 2026 | Michelle L Taylor | Common Stock | A | 1,340 | $0.00 | 10,363 | D | A |
| 18 Feb, 2026 | Louis J. Grabowsky | Common Stock | A | 1,340 | $0.00 | 43,010 | D | A |
| 17 Feb, 2026 | W. Christopher Durborow | Common Stock | D | 10,000 | $91.97 | 29,963 | D | S |
| 12 Feb, 2026 | Michelle L Taylor | Common Stock | D | 1,650 | $92.56 | 9,023 | D | S |
| 13 Feb, 2026 | Louis J. Grabowsky | Common Stock | D | 11,000 | $93.06 | 41,670 | D | S |
| 09 Feb, 2026 | Seth L. Kaplan | Common Stock | D | 7,086 | $94.67 | 127,661 | D | S |
| 09 Feb, 2026 | James W Sight | Common Stock | D | 3,070 | $96.15 | 13,872 | D | S |
| 09 Feb, 2026 | Seth L. Kaplan | Common Stock | D | 4,274 | $95.61 | 123,387 | D | S |
| 09 Feb, 2026 | Seth L. Kaplan | Common Stock | D | 3,240 | $96.67 | 120,147 | D | S |
| 09 Feb, 2026 | Seth L. Kaplan | Common Stock | D | 400 | $97.46 | 119,747 | D | S |
| 24 Dec, 2025 | Ronald J Kramer | Common Stock | D | 62,785 | $0.00 | 1,889,297 | D | G |