Insider · CIK 0001201289
Robert F Mehmel
Files at GFF (GRIFFON CORP). First filing Oct 18, 2024, latest Aug 13, 2026.
In brief
Robert F Mehmel files SEC Form 4 as COO and president at GFF (GRIFFON CORP). Since Oct 18, 2024, Robert F Mehmel has reported 0 open-market buys worth $0 and 11 open-market sells worth $12M, the latest filed on Aug 13, 2026.
A track record needs three past buys with six months of prices behind them; Robert F Mehmel has 0, so none is measured yet.
The newest scored trade: sold $347k of GFF on Aug 11, 2026, filed Aug 13, 2026, scored 30 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 8 sells worth $9.4M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
GFF: GRIFFON CORP
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 30Weak | GRIFFON CORP | $347k 3,240 shares | -0% | +61% from low-0% from high | |
| 40Moderate | GRIFFON CORP | $2.4M 22,567 shares | -3% | +62% from low0% from high | |
| 40Moderate | GRIFFON CORP | $3.8M 37,061 shares | -5% | +55% from low0% from high | |
| 24Weak | GRIFFON CORP | $407k 4,166 shares | -1% | +47% from low0% from high | |
| 20Weak | GRIFFON CORP | $27k 286 shares | -0% | +46% from low0% from high | |
| 40Moderate | GRIFFON CORP | $1.2M 12,599 shares | -2% | +43% from low-0% from high | |
| 30Weak | GRIFFON CORP | $340k 3,565 shares | -0% | +42% from low-1% from high | |
| 38Weak | GRIFFON CORP | $836k 8,773 shares | -1% | +41% from low-2% from high | |
| 40Moderate | GRIFFON CORP | $1.9M 25,000 shares | -3% | - | |
| 35Weak | GRIFFON CORP | $610k 8,697 shares | -1% | - | |
| 16Weak | GRIFFON CORP | $64k 912 shares | -0% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 5, 2026 | GFF Griffon Corporation | 50,000 0.11% of outstanding | $5.1M | Aug 5, 2026 | $4.9M |
| Jun 12, 2026 | GFF Griffon Corporation | 50,000 0.11% of outstanding | $4.7M | Jun 12, 2026 | none |
Transactions
Every row this insider has filed, 48 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 11, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -3,240 | $107.16 | $347k | 723,032 | Aug 13, 2026 |
| Aug 7, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,911 | $106.60 | $204k | 746,928 | Aug 11, 2026 |
| Aug 7, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -13,464 | $107.43 | $1.4M | 733,464 | Aug 11, 2026 |
| Aug 7, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -553 | $108.09 | $60k | 732,911 | Aug 11, 2026 |
| Aug 10, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -3,638 | $104.08 | $379k | 729,273 | Aug 11, 2026 |
| Aug 10, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,913 | $104.64 | $305k | 726,360 | Aug 11, 2026 |
| Aug 10, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -88 | $105.21 | $9,258 | 726,272 | Aug 11, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -617 | $98.68 | $61k | 785,283 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,283 | $99.67 | $228k | 783,000 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -3,527 | $100.46 | $354k | 779,473 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,790 | $101.44 | $283k | 776,683 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,341 | $102.59 | $548k | 771,342 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,434 | $103.53 | $563k | 765,908 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,217 | $104.12 | $231k | 763,691 | Aug 7, 2026 |
| Aug 6, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -158 | $102.03 | $16k | 763,533 | Aug 7, 2026 |
| Aug 6, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -211 | $103.52 | $22k | 763,322 | Aug 7, 2026 |
| Aug 6, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,476 | $104.56 | $573k | 757,846 | Aug 7, 2026 |
| Aug 6, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -6,933 | $105.46 | $731k | 750,913 | Aug 7, 2026 |
| Aug 6, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,074 | $106.27 | $220k | 748,839 | Aug 7, 2026 |
| Jun 30, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -4,166 | $97.76 | $407k | 785,900 | Jul 2, 2026 |
| Jun 26, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -230 | $95.52 | $22k | 790,122 | Jun 30, 2026 |
| Jun 26, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -52 | $96.14 | $4,999 | 790,070 | Jun 30, 2026 |
| Jun 26, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -4 | $97.50 | $390 | 790,066 | Jun 30, 2026 |
| Jun 24, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -4,626 | $95.45 | $442k | 798,325 | Jun 26, 2026 |
| Jun 24, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -100 | $96.03 | $9,603 | 798,225 | Jun 26, 2026 |
| Jun 25, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,149 | $95.62 | $492k | 793,076 | Jun 26, 2026 |
| Jun 25, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,534 | $96.41 | $148k | 791,542 | Jun 26, 2026 |
| Jun 25, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,190 | $97.27 | $116k | 790,352 | Jun 26, 2026 |
| Jun 16, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,921 | $95.36 | $279k | 803,595 | Jun 18, 2026 |
| Jun 16, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -97 | $96.25 | $9,336 | 803,498 | Jun 18, 2026 |
| Jun 17, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -547 | $95.37 | $52k | 802,951 | Jun 18, 2026 |
| Jun 12, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,501 | $95.18 | $524k | 809,788 | Jun 16, 2026 |
| Jun 15, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -3,272 | $95.40 | $312k | 806,516 | Jun 16, 2026 |
| Nov 30, 2025 | GFF GRIFFON CORP | FTax withholding Common Stock | -26,928 | $75.00 | $2.0M | 815,289 | Dec 2, 2025 |
| Nov 18, 2025 | GFF GRIFFON CORP | AGrant or award Common Stock | +68,432 | $0.00 | $0 | 842,217 | Nov 19, 2025 |
| Feb 4, 2025 | GFF GRIFFON CORP | AGrant or award Common Stock | +36,000 | $0.00 | $0 | 733,914 | Feb 6, 2025 |
| Feb 4, 2025 | GFF GRIFFON CORP | AGrant or award Common Stock | +151,382 | $0.00 | $0 | 885,296 | Feb 6, 2025 |
| Feb 4, 2025 | GFF GRIFFON CORP | FTax withholding Common Stock | -111,511 | $76.95 | $8.6M | 773,785 | Feb 6, 2025 |
| Nov 27, 2024 | GFF GRIFFON CORP | GGift Common Stock | -15,000 | $0.00 | $0 | 697,914 | Nov 29, 2024 |
| Nov 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,781 | $73.13 | $130k | 736,133 | Nov 15, 2024 |
| Nov 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,719 | $74.24 | $128k | 734,414 | Nov 15, 2024 |
| Nov 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -7,664 | $74.82 | $573k | 726,750 | Nov 15, 2024 |
| Nov 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -12,653 | $75.30 | $953k | 714,097 | Nov 15, 2024 |
| Nov 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -1,183 | $76.20 | $90k | 712,914 | Nov 15, 2024 |
| Nov 11, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -8,697 | $70.10 | $610k | 737,914 | Nov 13, 2024 |
| Oct 16, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -912 | $70.06 | $64k | 746,611 | Oct 18, 2024 |
| Dec 15, 2023 | GFF GRIFFON CORP | GGift Common Stock | -10,000 | $0.00 | $0 | 848,228 | Dec 19, 2023 |
| Dec 17, 2023 | GFF GRIFFON CORP | FTax withholding Common Stock | -15,386 | $56.59 | $871k | 832,842 | Dec 19, 2023 |
Questions about Robert F Mehmel
Answered from the filings on this page, as of the latest one.
Is Robert F Mehmel buying or selling?
In the last 12 months Robert F Mehmel reported 0 open-market buys worth $0 and 8 open-market sells worth $9.4M on SEC Form 4; the latest was sold $347k of GFF on Aug 11, 2026. Grants, option exercises and tax withholding are not counted.
How did Robert F Mehmel's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Robert F Mehmel has 0.
Where does Robert F Mehmel file Form 4?
Robert F Mehmel has filed Form 4 at GFF (GRIFFON CORP) as President and COO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.