🕵️ Griffon Corp ($GFF)
SEC insider & ownership activity, last 12 months · CIK 50725 · every row links its SEC filing
Over the last 12 months insiders sold $36.7M against $80K of open-market buying. Ronald J. Kramer sold $19.7M (Jun–Aug). 1 planned sale is pending, the largest $1.1M (Brian G. Harris). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $80K (1 lots) · 10 sellers, $36.7M (55 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Ronald J. Kramer | 0 | – | 7 | $19.7M | Aug 5, 2026 |
| Robert F. Mehmel | 0 | – | 33 | $9.4M | Aug 11, 2026 |
| Brian G. Harris | 0 | – | 5 | $3.0M | Aug 7, 2026 |
| Seth L. Kaplan | 0 | – | 4 | $1.4M | Feb 9, 2026 |
| Louis J. Grabowsky | 0 | – | 1 | $1.0M | Feb 13, 2026 |
| William C. Durborow | 0 | – | 1 | $920K | Feb 17, 2026 |
| Kevin F. Sullivan | 0 | – | 1 | $370K | Aug 13, 2026 |
| Cheryl L. Turnbull | 0 | – | 1 | $318K | Aug 13, 2026 |
| James Sight | 0 | – | 1 | $295K | Feb 9, 2026 |
| Michelle L. Taylor | 0 | – | 1 | $153K | Feb 12, 2026 |
| Henry A. Alpert | 1 | $80K | 0 | – | Mar 5, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12.3% | 13G | Jul 18, 2025 | filing ↗ | |
| Vanguard Portfolio Management | 8.1% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Cheryl L. Turnbull | $320K | Aug 13, 2026 | filing ↗ |
| Kevin F. Sullivan | $367K | Aug 13, 2026 | filing ↗ |
| Brian G. Harris | $564K | Aug 7, 2026 | filing ↗ |
| Robert Mehmel | $5.1M | Aug 5, 2026 | filing ↗ |
| Brian G. Harris | $1.1M | Aug 5, 2026 | filing ↗ |
| Ronald J. Kramer | $9.4M | Aug 5, 2026 | filing ↗ |
| Brian G. Harris | $606K | Jun 30, 2026 | filing ↗ |
| Robert Mehmel | $4.7M | Jun 12, 2026 | filing ↗ |
| Ronald J. Kramer | $9.1M | Jun 12, 2026 | filing ↗ |
| Brian G. Harris | $713K | Jun 11, 2026 | filing ↗ |
| William C. Durborow | $921K | Feb 17, 2026 | filing ↗ |
| Louis J. Grabowsky | $1.0M | Feb 13, 2026 | filing ↗ |
| Michelle L. Taylor | $153K | Feb 12, 2026 | filing ↗ |
| James Sight | $295K | Feb 9, 2026 | filing ↗ |
| Seth L. Kaplan | $1.4M | Feb 9, 2026 | filing ↗ |
| Ronald J. Kramer | $9.5M | Feb 9, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Aug 18, 2026 | filing ↗ |
| New financial obligation (2.03) | Aug 18, 2026 | filing ↗ |
| Other events (8.01) | Aug 18, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 18, 2026 | filing ↗ |
| Material agreement (1.01) | Aug 10, 2026 | filing ↗ |
| Other events (8.01) | Aug 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 10, 2026 | filing ↗ |
| Other events (8.01) | Aug 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2026 | filing ↗ |
| Earnings (2.02) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Material agreement (1.01) | Jul 31, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Jul 31, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 31, 2026 | filing ↗ |
| Other events (8.01) | Jul 31, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 31, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 7, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 18, 2026 | filing ↗ |
| Earnings (2.02) | Feb 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 5, 2026 | filing ↗ |
| Earnings (2.02) | Nov 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 19, 2025 | filing ↗ |