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Insider Trading Intelligence
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RM

Robert F. Mehmel

GFF
PRESIDENT AND COO · GRIFFON CORP · CIK 0001201289
FILING MIX · LIFETIME20%/80%
BUYS
11
SELLS
45
TOTAL VALUE
$30.14M
COMPANIES
1
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
785,900
AVG SELL PX
$56.62
TRADE KIND
SHOWING 56 / 56
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
22 backtested trades · 8 horizons · 22 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Robert F. Mehmel, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d22+40.91%+0.64%+0.51%+0.13%-0.31%—
14d22+22.73%+2.51%+1.02%+1.49%+1.71%—
30d22+59.09%-0.38%+2.62%-3.00%-3.70%—
60d22+22.73%+5.18%+2.96%+2.22%+3.99%—
90d22+22.73%+8.57%+5.02%+3.55%+3.58%—
180d22+27.27%+0.28%-0.62%+0.90%+2.94%—
1y22+22.73%+6.32%+16.67%-10.35%-6.25%—
2y22(22 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
GFF · 785,900 shares · as of Jun 30, 2026
0227,543455,085682,628910,170202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 11 buys / 45 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
4,166$97.76$407.3K785,900Jun 30, 2026Jul 2, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
4$97.50$390790,066Jun 26, 2026Jun 30, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
230$95.52$22.0K790,122Jun 26, 2026Jun 30, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
52$96.14$5.0K790,070Jun 26, 2026Jun 30, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,534$96.41$147.9K791,542Jun 25, 2026Jun 26, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,190$97.27$115.8K790,352Jun 25, 2026Jun 26, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
5,149$95.62$492.3K793,076Jun 25, 2026Jun 26, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
4,626$95.45$441.6K798,325Jun 24, 2026Jun 26, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
100$96.03$9.6K798,225Jun 24, 2026Jun 26, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
547$95.37$52.2K802,951Jun 17, 2026Jun 18, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
2,921$95.36$278.5K803,595Jun 16, 2026Jun 18, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
97$96.25$9.3K803,498Jun 16, 2026Jun 18, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
3,272$95.40$312.1K806,516Jun 15, 2026Jun 16, 2026 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
5,501$95.18$523.6K809,788Jun 12, 2026Jun 16, 2026 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
26,928$75.00$2.02M815,289Nov 30, 2025Dec 2, 2025 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
68,432——842,217Nov 18, 2025Nov 19, 2025 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
151,382——885,296Feb 4, 2025Feb 6, 2025 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
36,000——733,914Feb 4, 2025Feb 6, 2025 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
111,511$76.95$8.58M773,785Feb 4, 2025Feb 6, 2025 ↗View →
GFF
GRIFFON CORP
SALEGRANT
Gift
15,000——697,914Nov 27, 2024Nov 29, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,719$74.24$127.6K734,414Nov 13, 2024Nov 15, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
12,653$75.30$952.8K714,097Nov 13, 2024Nov 15, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,183$76.20$90.1K712,914Nov 13, 2024Nov 15, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,781$73.13$130.2K736,133Nov 13, 2024Nov 15, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
7,664$74.82$573.4K726,750Nov 13, 2024Nov 15, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
8,697$70.10$609.7K737,914Nov 11, 2024Nov 13, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
912$70.06$63.9K746,611Oct 16, 2024Oct 18, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
84$70.01$5.9K747,523Oct 1, 2024Oct 1, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
3,265$70.04$228.7K747,607Sep 27, 2024Oct 1, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
3,174$70.01$222.2K750,872Sep 23, 2024Sep 25, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,205$70.11$84.5K754,046Sep 20, 2024Sep 23, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
7,663$70.02$536.6K755,251Sep 19, 2024Sep 23, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
2,154$69.27$149.2K762,914Sep 18, 2024Sep 19, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
2,897$68.54$198.6K765,068Sep 18, 2024Sep 19, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
7,892$67.77$534.8K767,965Sep 18, 2024Sep 19, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
9,148$67.74$619.7K778,766Sep 17, 2024Sep 19, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
2,909$68.29$198.7K775,857Sep 17, 2024Sep 19, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,989$67.11$133.5K787,914Sep 16, 2024Sep 17, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
7,903$66.59$526.3K789,903Sep 16, 2024Sep 17, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
7,587$66.75$506.4K804,275Sep 13, 2024Sep 17, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
1,052$65.56$69.0K811,862Sep 13, 2024Sep 17, 2024 ↗View →
GFF
GRIFFON CORP
SALE10b5-1
10b5-1 plan
6,469$67.49$436.6K797,806Sep 13, 2024Sep 17, 2024 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
64,928$60.99$3.96M812,914Jan 30, 2024Jan 31, 2024 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
45,000——877,842Jan 29, 2024Jan 31, 2024 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
15,386$56.59$870.7K832,842Dec 17, 2023Dec 19, 2023 ↗View →
GFF
GRIFFON CORP
SALEGRANT
Gift
10,000——848,228Dec 15, 2023Dec 19, 2023 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
51,942$34.99$1.82M858,228Dec 23, 2022Dec 27, 2022 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
36,000——910,170Dec 23, 2022Dec 27, 2022 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
120,000——874,170Sep 27, 2022Sep 28, 2022 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
61,014$24.87$1.52M754,170Dec 20, 2021Dec 22, 2021 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
28,594——815,184Dec 20, 2021Dec 22, 2021 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
96,000——690,590Jul 28, 2021Jul 29, 2021 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
96,000——786,590Jul 28, 2021Jul 29, 2021 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
45,551——594,590Dec 17, 2020Dec 21, 2020 ↗View →
GFF
GRIFFON CORP
SALE
President and COO
71,318$21.90$1.56M549,039Jan 29, 2020Jan 31, 2020 ↗View →
GFF
GRIFFON CORP
PURCHASEGRANT
Stock grant
33,635——620,357Jan 29, 2020Jan 31, 2020 ↗View →
Other insiders · GFF
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About this filer
CIK 0001201289
ROLE
President and COO
PRIMARY
GFF
COMPANIES
1
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001201289DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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