Robert F. Mehmel is President & COO at GRIFFON CORP (GFF). They have made 19 open-market trades across 1 company since 2013, most recently 2026-08-11.
CIK 0001201289
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
3 open-market purchases totalling $1.1M since 2013, against 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GFF | 723,032 | $67.1M |
| DRS | 21,906 | $776K |
| Total | $67.9M |
Shares reported on the most recent Form 4, priced at the 2026-08-13 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GFF | SELL | 2026-08-11 | 2026-08-13 | $107.16 | $347K | -4.9% | -12.4% | — |
| GFF | SELL | 2026-08-07 | 2026-08-11 | $106.47 | $2.4M | -4.3% | -9.3% | — |
| GFF | SELL | 2026-08-05 | 2026-08-07 | $103.32 | $3.8M | +0.1% | -5.5% | — |
| GFF | SELL | 2026-06-30 | 2026-07-02 | $97.76 | $407K | +1.1% | -1.6% | +2.8% |
| GFF | SELL | 2026-06-26 | 2026-06-30 | $95.66 | $27K | -7.1% | -9.0% | -0.8% |
| GFF | SELL | 2026-06-24 | 2026-06-26 | $95.81 | $1.2M | -2.9% | -1.3% | +2.3% |
| GFF | SELL | 2026-06-16 | 2026-06-18 | $95.39 | $340K | +1.2% | -2.4% | +2.2% |
| GFF | SELL | 2026-06-12 | 2026-06-16 | $95.26 | $836K | +1.8% | -1.1% | -1.1% |
| GFF | SELL | 2024-11-13 | 2024-11-15 | $74.97 | $3.7M | +12.1% | +5.4% | +2.6% |
| GFF | SELL | 2024-11-11 | 2024-11-13 | $70.10 | $1.2M | +5.8% | -2.5% | -1.5% |
| GFF | SELL | 2024-10-16 | 2024-10-18 | $70.06 | $128K | -7.4% | +7.7% | +10.2% |
| GFF | SELL | 2024-09-27 | 2024-10-01 | $70.04 | $463K | -0.9% | -8.5% | +3.4% |
| GFF | SELL | 2024-09-23 | 2024-09-25 | $70.01 | $444K | -1.6% | -8.7% | +5.6% |
| GFF | SELL | 2024-09-19 | 2024-09-23 | $70.03 | $1.2M | -1.6% | -7.3% | +4.5% |
| GFF | SELL | 2024-09-17 | 2024-09-19 | $68.04 | $3.4M | -0.5% | -6.0% | +3.4% |
| GFF | SELL | 2024-09-13 | 2024-09-17 | $66.87 | $3.3M | +2.6% | +0.5% | +16.0% |
| GFF | BUY | 2015-05-05 | 2015-05-07 | $15.76 | $552K | -7.2% | -2.0% | -2.0% |
| GFF | BUY | 2013-05-17 | 2013-05-21 | $11.69 | $351K | -7.2% | -2.0% | -2.0% |
| GFF | BUY | 2013-05-15 | 2013-05-17 | $11.08 | $222K | -7.2% | -2.0% | -2.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.