Over the last 12 months, Griffon insiders reported no purchases and 11 sales totaling $28.8M across SEC Form 4 filings. 91% of the activity was filed under pre-arranged 10b5-1 trading plans.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Aug 6, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 37,061 | $103.32 | $3.8M | -4.7% | plan · 12 tranches |
| Aug 5, 2026 | Harris Brian GEVP, Chief Financial Officer · O | ▼ Sale | 11,050 | $103.27 | $1.1M | -7.6% | plan · 2 tranches |
| Aug 5, 2026 | KRAMER RONALD JChairman of the Board and CEO · O·D | ▼ Sale | 100,000 | $102.42 | $10.2M | -5.6% | plan · 5 tranches |
| Jun 30, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 4,166 | $97.76 | $407K | -0.5% | plan |
| Jun 30, 2026 | Harris Brian GEVP, Chief Financial Officer · O | ▼ Sale | 6,183 | $98.01 | $606K | -4.1% | plan |
| Jun 26, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 286 | $95.66 | $27K | — | plan · 3 tranches |
| Jun 25, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 12,599 | $95.81 | $1.2M | -1.6% | plan · 5 tranches |
| Jun 17, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 3,565 | $95.39 | $340K | -0.4% | plan · 3 tranches |
| Jun 15, 2026 | MEHMEL ROBERT FPresident and COO · O | ▼ Sale | 8,773 | $95.26 | $836K | -1.1% | plan · 2 tranches |
| Jun 12, 2026 | KRAMER RONALD JChairman of the Board and CEO · O·D | ▼ Sale | 100,000 | $94.92 | $9.5M | -5.3% | 2 tranches |
| Jun 11, 2026 | Harris Brian GEVP, Chief Financial Officer · O | ▼ Sale | 7,500 | $95.03 | $713K | -4.7% | plan |
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $GFF feed.