Updated Jul 16, 2026 · Last SEC filing 2026-07-02
GRIFFON CORP (GFF) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-02. 2 Form 8-K material event filings were reported by GFF in the last 90 days. 4 Form 144 notices of proposed sale were filed for GFF stock. InsiderAlpha tracks every GFF SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000050725 |
|---|
| Form 4 filings (90d) | 8 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 4 |
| Latest Form 4 filing | 2026-07-02 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Harris Brian G | EVP, Chief Financial Officer | S — Open-market sale | 6.2K | $98.01 | $606K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 4.2K | $97.76 | $407K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 52 | $96.14 | $5K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 230 | $95.52 | $22K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 4 | $97.50 | $390 | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 1.2K | $97.27 | $116K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 5.1K | $95.62 | $492K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 1.5K | $96.41 | $148K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 100 | $96.03 | $10K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 4.6K | $95.45 | $442K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 547 | $95.37 | $52K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 97 | $96.25 | $9K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 2.9K | $95.36 | $279K | SEC | |
| MEHMEL ROBERT F | President and COO | S — Open-market sale | 3.3K | $95.40 | $312K | SEC | |
| KRAMER RONALD J | Chairman of the Board and CEO | S — Open-market sale | 51.0K | $95.21 | $4.86M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for GRIFFON CORP (GFF). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| MEHMEL ROBERT F | 14 | $2.82M |
| KRAMER RONALD J | 2 | $9.49M |
| Harris Brian G | 2 | $1.32M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in GFF insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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