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Buy GFF
Griffon Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -68.17. In total, the insiders bought 1.45M and sold 1.44M GFF shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-68.17 |
| ● Buy | 1.45M shares |
| ● Sell | 1.44M shares |
|
41% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jun 30, 2026 Sell |
Harris Brian G EVP, Chief Financial Officer |
6 183 Value: $606.0K |
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|
Jun 30, 2026 Sell |
Mehmel Robert F President And COO |
4 166 Value: $407.3K |
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|
Jun 26, 2026 Sell |
Mehmel Robert F President And COO |
4 Value: $390 |
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Jun 26, 2026 Sell |
Mehmel Robert F President And COO |
52 Value: $5K |
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|
Jun 26, 2026 Sell |
Mehmel Robert F President And COO |
230 Value: $22.0K |
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Jun 25, 2026 Sell |
Mehmel Robert F President And COO |
1 190 Value: $115.8K |
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Jun 25, 2026 Sell |
Mehmel Robert F President And COO |
1 534 Value: $147.9K |
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|
Jun 25, 2026 Sell |
Mehmel Robert F President And COO |
5 149 Value: $492.3K |
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|
Jun 24, 2026 Sell |
Mehmel Robert F President And COO |
4 626 Value: $441.6K |
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Jun 24, 2026 Sell |
Mehmel Robert F President And COO |
100 Value: $10K |
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|
Jun 17, 2026 Sell |
Mehmel Robert F President And COO |
547 Value: $52.2K |
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Jun 16, 2026 Sell |
Mehmel Robert F President And COO |
2 921 Value: $278.5K |
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Jun 16, 2026 Sell |
Mehmel Robert F President And COO |
97 Value: $9K |
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|
Jun 15, 2026 Sell |
Mehmel Robert F President And COO |
3 272 Value: $312.1K |
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|
Jun 12, 2026 Sell |
Mehmel Robert F President And COO |
5 501 Value: $523.6K |
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Jun 12, 2026 Sell |
Kramer Ronald J Chairman Of The Board And CEO |
48 971 Value: $4.63M |
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Jun 12, 2026 Sell |
Kramer Ronald J Chairman Of The Board And CEO |
51 029 Value: $4.86M |
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|
Jun 11, 2026 Sell |
Harris Brian G EVP, Chief Financial Officer |
7 500 Value: $712.7K |
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|
Mar 05, 2026 Buy |
Alpert Henry A Director |
1 000 Value: $80.0K |
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|
Feb 18, 2026 Buy |
Diao H.c. Charles Director |
1 340 Value: $120.0K |
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Feb 18, 2026 Buy |
Coben Jerome L Director |
1 340 Value: $120.0K |
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|
Feb 18, 2026 Buy |
Taylor Michelle L Director |
1 340 Value: $120.0K |
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|
Feb 18, 2026 Buy |
Turnbull Cheryl L Director |
1 340 Value: $120.0K |
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|
Feb 18, 2026 Buy |
Johnson Lacy M. Director |
1 340 Value: $120.0K |
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|
Feb 18, 2026 Buy |
Grabowsky Louis J. Director |
1 340 Value: $120.0K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
