GRIFFON CORP (GFF) — insider trading
Industrials · NYSE
GRIFFON CORP (GFF) has 51 reported SEC Form 4 insider transactions in our data, including 1 open-market purchase and 47 open-market sales among the most recent 51 (latest 2026-08-13).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-13 | Sullivan Kevin F | Director | Open-market sale | 3,500 | $105.59 | $369.6K | Form 4 |
| 2026-08-13 | TURNBULL CHERYL L | Director | Open-market sale | 3,000 | $106.12 | $318.4K | Form 4 |
| 2026-08-11 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 3,240 | $107.16 | $347.2K | Form 4 |
| 2026-08-10 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 88 | $105.21 | $9.3K | Form 4 |
| 2026-08-10 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,913 | $104.64 | $304.8K | Form 4 |
| 2026-08-10 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 3,638 | $104.08 | $378.6K | Form 4 |
| 2026-08-07 | Harris Brian G | Officer (EVP, Chief Financial Officer) | Open-market sale | 5,267 | $107.11 | $564.1K | Form 4 |
| 2026-08-07 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 553 | $108.09 | $59.8K | Form 4 |
| 2026-08-07 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 13,464 | $107.43 | $1.45M | Form 4 |
| 2026-08-07 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 1,911 | $106.60 | $203.7K | Form 4 |
| 2026-08-06 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,074 | $106.27 | $220.4K | Form 4 |
| 2026-08-06 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 6,933 | $105.46 | $731.2K | Form 4 |
| 2026-08-06 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 5,476 | $104.56 | $572.6K | Form 4 |
| 2026-08-06 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 211 | $103.52 | $21.8K | Form 4 |
| 2026-08-06 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 158 | $102.03 | $16.1K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,217 | $104.12 | $230.8K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 5,434 | $103.53 | $562.6K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 5,341 | $102.59 | $547.9K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,790 | $101.44 | $283.0K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 3,527 | $100.46 | $354.3K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,283 | $99.67 | $227.5K | Form 4 |
| 2026-08-05 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 617 | $98.68 | $60.9K | Form 4 |
| 2026-08-05 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 8,120 | $104.27 | $846.7K | Form 4 |
| 2026-08-05 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 16,402 | $103.37 | $1.70M | Form 4 |
| 2026-08-05 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 45,240 | $102.63 | $4.64M | Form 4 |
| 2026-08-05 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 17,322 | $101.58 | $1.76M | Form 4 |
| 2026-08-05 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 12,916 | $100.44 | $1.30M | Form 4 |
| 2026-08-05 | Harris Brian G | Officer (EVP, Chief Financial Officer) | Open-market sale | 2,233 | $104.01 | $232.3K | Form 4 |
| 2026-08-05 | Harris Brian G | Officer (EVP, Chief Financial Officer) | Open-market sale | 8,817 | $103.08 | $908.9K | Form 4 |
| 2026-06-30 | Harris Brian G | Officer (EVP, Chief Financial Officer) | Open-market sale | 6,183 | $98.01 | $606.0K | Form 4 |
| 2026-06-30 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 4,166 | $97.76 | $407.3K | Form 4 |
| 2026-06-26 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 4 | $97.50 | $390 | Form 4 |
| 2026-06-26 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 52 | $96.14 | $5.0K | Form 4 |
| 2026-06-26 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 230 | $95.52 | $22.0K | Form 4 |
| 2026-06-25 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 1,190 | $97.27 | $115.8K | Form 4 |
| 2026-06-25 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 1,534 | $96.41 | $147.9K | Form 4 |
| 2026-06-25 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 5,149 | $95.62 | $492.3K | Form 4 |
| 2026-06-24 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 100 | $96.03 | $9.6K | Form 4 |
| 2026-06-24 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 4,626 | $95.45 | $441.6K | Form 4 |
| 2026-06-17 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 547 | $95.37 | $52.2K | Form 4 |
| 2026-06-16 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 97 | $96.25 | $9.3K | Form 4 |
| 2026-06-16 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 2,921 | $95.36 | $278.5K | Form 4 |
| 2026-06-15 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 3,272 | $95.40 | $312.1K | Form 4 |
| 2026-06-12 | MEHMEL ROBERT F | Officer (President and COO) | Open-market sale | 5,501 | $95.18 | $523.6K | Form 4 |
| 2026-06-12 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 48,971 | $94.62 | $4.63M | Form 4 |
| 2026-06-12 | KRAMER RONALD J | Director, Officer (Chairman of the Board and CEO) | Open-market sale | 51,029 | $95.21 | $4.86M | Form 4 |
| 2026-06-11 | Harris Brian G | Officer (EVP, Chief Financial Officer) | Open-market sale | 7,500 | $95.03 | $712.7K | Form 4 |
| 2026-03-05 | ALPERT HENRY A | Director | Open-market purchase | 1,000 | $79.99 | $80.0K | Form 4 |
| 2026-02-18 | ALPERT HENRY A | Director | Grant / award / vesting | 1,340 | — | $0 | Form 4 |
| 2026-02-18 | Johnson Lacy M. | Director | Grant / award / vesting | 1,340 | — | $0 | Form 4 |
| 2026-02-18 | Grabowsky Louis J. | Director | Grant / award / vesting | 1,340 | — | $0 | Form 4 |
Ask the chat about GFF's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: GRIFFON CORP (GFF).
Last updated 2026-08-13 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.