Griffon Corporation (GFF) Insider Trading
Over the last 3 months, GFF insiders made 0 open-market buys and 16 sales, a net sale of -$12.6M (SEC Form 4). Over the last 6 months, 261 institutions increased and 231 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
16
Net (3m)
-$12.6M
Insider trades by month Buys Sells
Nov
Dec
Feb
Feb
Mar
Jun
Context3-month price +34.2%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 30, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 230 | $95.52 |
| Jun 30, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 4 | $97.50 |
| Jun 30, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 52 | $96.14 |
| Jun 26, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 100 | $96.03 |
| Jun 26, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 1,190 | $97.27 |
| Jun 26, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 1,534 | $96.41 |
| Jun 26, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 4,626 | $95.45 |
| Jun 26, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 5,149 | $95.62 |
| Jun 18, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 97 | $96.25 |
| Jun 18, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 547 | $95.37 |
| Jun 18, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 2,921 | $95.36 |
| Jun 16, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 5,501 | $95.18 |
| Jun 16, 2026 | MEHMEL ROBERT Fofficer: President and COO | Sell | 3,272 | $95.40 |
| Jun 15, 2026 | KRAMER RONALD Jdirector, officer: Chairman of the Board and CEO | Sell | 48,971 | $94.62 |
| Jun 15, 2026 | Harris Brian Gofficer: EVP, Chief Financial Officer | Sell | 7,500 | $95.03 |
| Jun 15, 2026 | KRAMER RONALD Jdirector, officer: Chairman of the Board and CEO | Sell | 51,029 | $95.21 |
| Mar 9, 2026 | ALPERT HENRY Adirector | Buy | 1,000 | $79.99 |
| Feb 20, 2026 | Grabowsky Louis J.director | Grant | 1,340 | — |
| Feb 20, 2026 | Taylor Michelle Ldirector | Grant | 1,340 | — |
| Feb 20, 2026 | Hegedus Samantadirector | Grant | 1,340 | — |
| Feb 20, 2026 | Coben Jerome Ldirector | Grant | 1,340 | — |
| Feb 20, 2026 | Sullivan Kevin Fdirector | Grant | 1,340 | — |
| Feb 20, 2026 | Johnson Lacy M.director | Grant | 1,340 | — |
| Feb 20, 2026 | Diao H.C. Charlesdirector | Grant | 1,340 | — |
| Feb 20, 2026 | SIGHT JAMES Wdirector | Grant | 1,340 | — |
| Feb 20, 2026 | ALPERT HENRY Adirector | Grant | 1,340 | — |
| Feb 20, 2026 | TURNBULL CHERYL Ldirector | Grant | 1,340 | — |
| Feb 18, 2026 | Durborow W. Christopherofficer: Vice President & CAO | Sell | 10,000 | $91.97 |
| Feb 17, 2026 | Taylor Michelle Ldirector | Sell | 1,650 | $92.56 |
| Feb 17, 2026 | Grabowsky Louis J.director | Sell | 11,000 | $93.06 |
Source: GFF SEC Form 4 filings, latest Jun 30, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their GFF positions over the last 6 months (SEC Form 13F).
Increased
261
New positions
93
Reduced
231
Sold out
70
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 6.0M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 5.9M | Feb 12, 2026 |
| VANGUARD GROUP INC | Reduced | 5.9M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 3.8M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3.7M | May 8, 2026 |
| VOSS CAPITAL, LLC | Increased | 1.8M | May 15, 2026 |
| VOSS CAPITAL, LLC | Increased | 1.8M | Feb 13, 2026 |
| STATE STREET CORP | Increased | 1.5M | Feb 13, 2026 |
| STATE STREET CORP | Reduced | 1.5M | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.0M | Feb 12, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.0M | May 7, 2026 |
| FULLER & THALER ASSET MANAGEMENT, INC. | Increased | 1.0M | Feb 18, 2026 |
| FULLER & THALER ASSET MANAGEMENT, INC. | Reduced | 1.0M | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 924K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 922K | Feb 9, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.