| Investor | Value | Of portfolio | Shares | Change | Quarter |
|---|---|---|---|---|---|
| Renaissance Technologies | $49.6M | 0.07% | 508.75K | −7.1% | Q2 2026 |
From each investor's quarterly 13F filing with the SEC: positions at the quarter's end, reported up to 45 days later. All investors
No member of Congress has disclosed a GFF trade since 2025.
From House and Senate STOCK Act reports. Members disclose trades, not holdings, as value ranges up to 45 days later, so amounts are estimates and “last move” is a hint at who still holds it, not a position. All recent congress trades
| Date | Insider | Transaction | Shares | Value |
|---|---|---|---|---|
| Aug 12, 2026 | Sullivan Kevin FDirector | Sale at price 105.59 per share. | 3.5K | $369.56K |
| Aug 12, 2026 | Turnbull Cheryl LDirector | Sale at price 106.12 per share. | 3K | $318.36K |
| Aug 10, 2026 | Mehmel Robert FPresident | Sale at price 107.16 per share. | 3.2K | $347.20K |
| Aug 9, 2026 | Mehmel Robert FPresident | Sale at price 104.08 - 108.09 per share. | 22.6K | $2.40M |
| Aug 6, 2026 | Harris Brian GChief Financial Officer | Sale at price 107.11 per share. | 5.3K | $564.15K |
| Aug 5, 2026 | Mehmel Robert FPresident | Sale at price 98.68 - 106.27 per share. | 37.1K | $3.83M |
| Aug 4, 2026 | Harris Brian GChief Financial Officer | Sale at price 103.08 - 104.01 per share. | 11.1K | $1.14M |
| Aug 4, 2026 | Kramer Ronald JChief Executive Officer | Sale at price 100.44 - 104.27 per share. | 100K | $10.24M |
| Jun 29, 2026 | Mehmel Robert FPresident | Sale at price 97.76 per share. | 4.2K | $407.27K |
| Jun 29, 2026 | Harris Brian GChief Financial Officer | Sale at price 98.01 per share. | 6.2K | $606.00K |
| Jun 25, 2026 | Mehmel Robert FPresident | Sale at price 95.52 - 97.50 per share. | 286 | $27.36K |
| Jun 24, 2026 | Mehmel Robert FPresident | Sale at price 95.45 - 97.27 per share. | 12.6K | $1.21M |
| Jun 16, 2026 | Mehmel Robert FPresident | Sale at price 95.36 - 96.25 per share. | 3.6K | $340.05K |
| Jun 14, 2026 | Mehmel Robert FPresident | Sale at price 95.18 - 95.40 per share. | 8.8K | $835.73K |
| Jun 11, 2026 | Kramer Ronald JChief Executive Officer | Sale at price 94.62 - 95.21 per share. | 100K | $9.49M |
| Jun 10, 2026 | Harris Brian GChief Financial Officer | Sale at price 95.03 per share. | 7.5K | $712.73K |
| Mar 4, 2026 | Alpert Henry ADirector | Purchase at price 79.99 per share. | 1K | $79.99K |
| Feb 17, 2026 | Coben Jerome LDirector | Stock Award(Grant) at price 0.00 per share. | 1.3K | — |
| Feb 17, 2026 | Sullivan Kevin FDirector | Stock Award(Grant) at price 0.00 per share. | 1.3K | — |
| Feb 17, 2026 | Diao H C CharlesDirector | Stock Award(Grant) at price 0.00 per share. | 1.3K | — |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 10.6 | 4.7 | -14.7 | 25.4 | -3.5 | 10.9 | -11.6 | 13.0 | -4.5 | -2.7 | +22.9% | ||
| 2025 | 6.3 | -4.5 | -1.2 | -4.7 | 0.9 | 5.3 | 12.3 | -6.3 | -0.0 | -2.8 | 1.3 | -1.8 | +3.3% |
| 2024 | -4.4 | 22.6 | 2.7 | -10.7 | 3.1 | -5.4 | 12.8 | -8.1 | 5.8 | -10.2 | 34.1 | -15.5 | +16.9% |
| 2023 | 14.2 | -10.8 | -12.2 | -11.1 | 10.8 | 27.9 | 3.5 | 0.4 | -5.3 | 0.7 | 16.5 | 31.0 | +70.3% |
| 2022 | -21.4 | 2.9 | -13.1 | -6.6 | 71.4 | -12.6 | 7.1 | 4.5 | -5.8 | 8.9 | 9.9 | 1.4 | +25.7% |
| 2021 | 10.2 | 9.5 | 10.4 | -0.2 | -3.1 | -2.5 | -9.8 | 4.7 | 1.7 | 7.7 | -0.7 | 8.2 | +39.7% |
| 2020 | 2.3 | -16.3 | -27.3 | 29.7 | 2.4 | 10.2 | 23.5 | -5.0 | -10.1 | 9.7 | -2.8 | -2.3 | +0.2% |
| 2019 | 52.2 | 12.1 | 3.6 | 6.2 | -26.7 | 17.7 | -3.4 | 6.7 | 20.2 | 1.6 | -0.4 | -4.2 | +94.5% |
| 2018 | -1.5 | -6.7 | -2.4 | 9.0 | 14.1 | -21.6 | 0.6 | 2.0 | -11.5 | -25.0 | 0.3 | -14.1 | −48.6% |
| 2017 | -2.9 | -1.2 | -2.0 | -2.6 | -9.6 | 1.2 | -6.6 | -9.5 | 19.7 | 1.6 | 3.5 | -12.8 | −22.3% |
| 2016 | -14.7 | -2.1 | 4.0 | 2.3 | 6.6 | 0.1 | 1.7 | -0.1 | -0.6 | -1.8 | 43.1 | 9.6 | +47.2% |
| 2015 | 10.5 | 11.1 | 6.8 | -3.6 | -5.0 | -0.3 | 8.3 | -3.5 | -5.2 | 8.9 | 5.6 | -1.9 | +33.8% |
| 2014 | -4.9 | -1.3 | -3.7 | -10.9 | 9.9 | 6.1 | -13.1 | 15.8 | -8.7 | 7.9 | 1.3 | 6.8 | +0.7% |
| 2013 | 3.0 | -4.5 | 5.8 | -13.6 | 12.0 | -2.5 | 5.8 | -7.3 | 13.7 | -0.1 | 2.6 | 2.7 | +15.3% |
| 2012 | 9.2 | 7.2 | 0.1 | -7.4 | -19.2 | 7.1 | 2.4 | 10.0 | 6.5 | -1.5 | 2.3 | 10.4 | +25.5% |
| 2011 | -8.6 | 3.6 | 8.9 | -3.0 | -16.9 | -4.8 | -6.3 | -7.5 | -6.4 | 15.8 | -1.0 | -2.7 | −28.3% |
| 2010 | -3.4 | 4.8 | 0.6 | 13.2 | -13.9 | -8.9 | 22.6 | -21.2 | 14.0 | -3.3 | 2.8 | 5.1 | +4.3% |
| 2009 | 6.6 | -26.9 | 3.2 | 15.6 | 11.8 | -14.1 | 15.9 | 9.6 | -4.7 | -12.9 | 18.6 | 17.5 | +31.0% |
| 2008 | -12.4 | -18.8 | -2.8 | 8.7 | -3.3 | -3.1 | 14.7 | 21.9 | -26.4 | -6.4 | -5.2 | 16.6 | −25.1% |
| 2007 | 1.0 | -8.9 | 5.5 | -3.1 | -2.7 | -6.7 | -19.3 | -10.9 | -3.6 | 2.2 | -16.3 | -3.6 | −51.2% |
Griffon Corporation, through its subsidiaries, provides home and building, and consumer and professional products in the United States, Europe, Canada, Australia, and internationally. The Home and Building Products segment manufactures and markets residential and sectional commercial garage doors, rolling steel service doors, fire doors, shutters, steel security grilles, and room dividers. This segment also sells garage door openers. Its Consumer and Professional Products segment manufactures and markets long-handled engineered tools, including shovels, spades, scoops, rakes, hoes, cultivators, weeders, post hole diggers, scrapers, edgers, and forks; wheelbarrows and lawn carts; snow tools comprising pushers, roof rakes, sled sleigh shovels, and ice scrapers; and pruning products, such as pruners, loppers, shears, and other tools. This segment also offers striking tools, including axes, picks, mattocks, mauls, wood splitters, sledgehammers, pry bars, and repair handles; hand tools comprising hammers, screwdrivers, pliers, adjustable wrenches, handsaws, tape measures, levels, clamps, trowels, and other hand tools; indoor and outdoor planters and lawn accessories; and garden hoses and hose reels. In addition, this segment provides home organization products, including wire and wood shelving, containers, storage cabinets, and other closet and home organization accessories; residential, industrial, and commercial fans; and cleaning products, such as brooms, brushes, squeegees, and other cleaning products. It serves independent professional installing dealers and home center retail chains; and industrial distributors, homebuilders, and e-commerce platforms, as well as mass market, specialty, and hardware retailers. The company was formerly known as Instrument Systems Corporation and changed its name to Griffon Corporation in 1995. Griffon Corporation was incorporated in 1959 and is headquartered in New York, New York.
Buy / hold / sell counts