GFF
insider transactionsGRIFFON CORP — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-159.6K
1.0K buy · 160.6K sell
Net value · 365d
-$15.1M
$80.0K in · $15.2M out
Sentiment · 365d
Net selling
1% buying · 99% selling
Open-market trades · 365d
17
1.0K buy · 160.6K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Sell·S
Robert F Mehmel KEY
President and COO · 10b5-1
$52.2K
547 sh · $95.37
Own -0%
-
Sell·S
Robert F Mehmel KEY
President and COO · 10b5-1
$9.3K
97 sh · $96.25
Own -0%
-
Sell·S
Robert F Mehmel KEY
President and COO · 10b5-1
$278.5K
2.9K sh · $95.36
Own -0%
-
Sell·S
Robert F Mehmel KEY
President and COO · 10b5-1
$312.1K
3.3K sh · $95.40
Own -0%
-
Sell·S
Ronald J Kramer KEY
Chairman of the Board and CEO
$4.6M
49.0K sh · $94.62
Own -3%
-
Sell·S
Ronald J Kramer KEY
Chairman of the Board and CEO
$4.9M
51.0K sh · $95.21
Own -3%
-
Sell·S
Robert F Mehmel KEY
President and COO · 10b5-1
$523.6K
5.5K sh · $95.18
Own -1%
-
Sell·S
Brian G Harris KEY
EVP, Chief Financial Officer · 10b5-1
$712.7K
7.5K sh · $95.03
Own -5%
-
Buy·P
Director
$80.0K
1.0K sh · $79.99
Own +1%
-
Grant·A
Director
$0
1.3K sh
Own +3%
-
Grant·A
Director
$0
1.3K sh
Own +5%
-
Grant·A
Director
$0
1.3K sh
Own +3%
-
Grant·A
Director
$0
1.3K sh
Own +10%
-
Grant·A
Director
$0
1.3K sh
Own +5%
-
Grant·A
Director
$0
1.3K sh
Own +4%
-
Grant·A
Director
$0
1.3K sh
Own +15%
-
Grant·A
Director
$0
1.3K sh
Own +7%
-
Grant·A
Director
$0
1.3K sh
Own +2%
-
Sell·S
Vice President & CAO
$919.7K
10.0K sh · $91.97
Own -25%
-
Sell·S
Director
$1.0M
11.0K sh · $93.06
Own -21%
-
Sell·S
Director
$152.7K
1.6K sh · $92.56
Own -15%
-
Sell·S
Sr VP, Gen. Counsel and Secy
$39.0K
400 sh · $97.46
Own -0%
-
Sell·S
Sr VP, Gen. Counsel and Secy
$313.2K
3.2K sh · $96.67
Own -3%
-
Sell·S
Sr VP, Gen. Counsel and Secy
$408.6K
4.3K sh · $95.61
Own -3%
-
Sell·S
Sr VP, Gen. Counsel and Secy
$670.8K
7.1K sh · $94.67
Own -5%
-
Sell·S
Director
$295.2K
3.1K sh · $96.15
Own -18%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 17, 2026 | Robert F Mehmel KEY 10b5-1 | Sell S | 547 | $52.2K |
| Jun 16, 2026 | Robert F Mehmel KEY 10b5-1 | Sell S | 97 | $9.3K |
| Jun 16, 2026 | Robert F Mehmel KEY 10b5-1 | Sell S | 2.9K | $278.5K |
| Jun 15, 2026 | Robert F Mehmel KEY 10b5-1 | Sell S | 3.3K | $312.1K |
| Jun 12, 2026 | Ronald J Kramer KEY | Sell S | 49.0K | $4.6M |
| Jun 12, 2026 | Ronald J Kramer KEY | Sell S | 51.0K | $4.9M |
| Jun 12, 2026 | Robert F Mehmel KEY 10b5-1 | Sell S | 5.5K | $523.6K |
| Jun 11, 2026 | Brian G Harris KEY 10b5-1 | Sell S | 7.5K | $712.7K |
| Mar 5, 2026 | Henry A Alpert | Buy P | 1.0K | $80.0K |
| Feb 18, 2026 | Louis J. Grabowsky | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Lacy M. Johnson | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Kevin F Sullivan | Grant A | 1.3K | $0 |
| Feb 18, 2026 | SIGHT JAMES W | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Samanta Hegedus | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Cheryl L Turnbull | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Michelle L Taylor | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Jerome L Coben | Grant A | 1.3K | $0 |
| Feb 18, 2026 | Henry A Alpert | Grant A | 1.3K | $0 |
| Feb 17, 2026 | Christopher W. Durborow KEY | Sell S | 10.0K | $919.7K |
| Feb 13, 2026 | Louis J. Grabowsky | Sell S | 11.0K | $1.0M |
| Feb 12, 2026 | Michelle L Taylor | Sell S | 1.6K | $152.7K |
| Feb 9, 2026 | Seth L. Kaplan | Sell S | 400 | $39.0K |
| Feb 9, 2026 | Seth L. Kaplan | Sell S | 3.2K | $313.2K |
| Feb 9, 2026 | Seth L. Kaplan | Sell S | 4.3K | $408.6K |
| Feb 9, 2026 | Seth L. Kaplan | Sell S | 7.1K | $670.8K |
| Feb 9, 2026 | SIGHT JAMES W | Sell S | 3.1K | $295.2K |
About GFF insider trading
This page tracks insider transactions for GRIFFON CORP (GFF) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.