Insider · CIK 0001470077
Brian G Harris
Files at GFF (GRIFFON CORP). First filing Sep 17, 2024, latest Aug 11, 2026.
In brief
Brian G Harris files SEC Form 4 as CFO at GFF (GRIFFON CORP). Since Sep 17, 2024, Brian G Harris has reported 0 open-market buys worth $0 and 7 open-market sells worth $5.8M, the latest filed on Aug 11, 2026.
A track record needs three past buys with six months of prices behind them; Brian G Harris has 0, so none is measured yet.
The newest scored trade: sold $564k of GFF on Aug 7, 2026, filed Aug 11, 2026, scored 36 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 4 sells worth $3.0M.
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 |
|---|---|---|---|---|---|
| 36Weak | GRIFFON CORP | $564k 5,267 shares | -4% | +62% from low0% from high | |
| 42Moderate | GRIFFON CORP | $1.1M 11,050 shares | -8% | +55% from low0% from high | |
| 29Weak | GRIFFON CORP | $606k 6,183 shares | -4% | +47% from low0% from high | |
| 38Weak | GRIFFON CORP | $713k 7,500 shares | -5% | +44% from low0% from high | |
| 47Moderate | GRIFFON CORP | $1.5M 18,540 shares | -10% | - | |
| 33Weak | GRIFFON CORP | $394k 5,819 shares | -3% | +78% from low-9% from high | |
| 41Moderate | GRIFFON CORP | $897k 13,565 shares | -6% | +76% from low-10% from high |
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 7, 2026 | GFF GRIFFON CORP | 5,267 0.01% of outstanding | $564k | Aug 7, 2026 | $2.5M |
| Aug 5, 2026 | GFF GRIFFON CORP | 11,050 0.02% of outstanding | $1.1M | Aug 5, 2026 | $1.3M |
| Jun 30, 2026 | GFF GRIFFON CORP | 6,183 0.01% of outstanding | $606k | Jun 30, 2026 | $713k |
| Jun 11, 2026 | GFF GRIFFON CORP | 7,500 0.02% of outstanding | $713k | Jun 11, 2026 | none |
| Nov 29, 2024 | GFF GRIFFON CORP | 18,540 0.04% of outstanding | $1.6M | Nov 29, 2024 | $1.3M |
| Sep 4, 2024 | GFF GRIFFON CORP | 19,384 0.04% of outstanding | $1.3M | Sep 4, 2024 | none |
Transactions
Every row this insider has filed, 17 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,267 | $107.11 | $564k | 128,649 | Aug 11, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -8,817 | $103.08 | $909k | 136,149 | Aug 7, 2026 |
| Aug 5, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -2,233 | $104.01 | $232k | 133,916 | Aug 7, 2026 |
| Jun 30, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -6,183 | $98.01 | $606k | 144,966 | Jul 2, 2026 |
| Jun 11, 2026 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -7,500 | $95.03 | $713k | 151,149 | Jun 15, 2026 |
| Nov 30, 2025 | GFF GRIFFON CORP | FTax withholding Common Stock | -7,610 | $75.00 | $571k | 158,649 | Dec 2, 2025 |
| Nov 30, 2024 | GFF GRIFFON CORP | FTax withholding Common Stock10b5-1 | -8,879 | $84.30 | $748k | 184,799 | Dec 3, 2024 |
| Dec 2, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -13,983 | $82.43 | $1.2M | 170,816 | Dec 3, 2024 |
| Dec 2, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -4,557 | $83.11 | $379k | 166,259 | Dec 3, 2024 |
| Sep 17, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -5,819 | $67.65 | $394k | 193,678 | Sep 19, 2024 |
| Sep 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -10,000 | $65.64 | $656k | 203,062 | Sep 17, 2024 |
| Sep 13, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -3,314 | $67.50 | $224k | 199,748 | Sep 17, 2024 |
| Sep 16, 2024 | GFF GRIFFON CORP | SOpen-market sale Common Stock10b5-1 | -251 | $67.50 | $17k | 199,497 | Sep 17, 2024 |
| Dec 17, 2023 | GFF GRIFFON CORP | FTax withholding Common Stock | -7,170 | $56.59 | $406k | 213,062 | Dec 19, 2023 |
| Nov 30, 2023 | GFF GRIFFON CORP | FTax withholding Common Stock | -8,958 | $46.53 | $417k | 220,232 | Dec 4, 2023 |
| Nov 14, 2023 | GFF GRIFFON CORP | AGrant or award Common Stock | +19,339 | $0.00 | $0 | 229,190 | Nov 17, 2023 |
| Nov 14, 2023 | GFF GRIFFON CORP | FTax withholding Common Stock | +19,339 | $0.00 | $0 | 229,190 | Nov 16, 2023 |
Questions about Brian G Harris
Answered from the filings on this page, as of the latest one.
Is Brian G Harris buying or selling?
In the last 12 months Brian G Harris reported 0 open-market buys worth $0 and 4 open-market sells worth $3.0M on SEC Form 4; the latest was sold $564k of GFF on Aug 7, 2026. Grants, option exercises and tax withholding are not counted.
How did Brian G Harris's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Brian G Harris has 0.
Where does Brian G Harris file Form 4?
Brian G Harris has filed Form 4 at GFF (GRIFFON CORP) as SVP, Chief Financial Officer. 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.