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Griffon Corp

GFF
Exchange
NYSE
Industry
Metal Doors, Sash, Frames, Moldings & Trim
SEC CIK
0000050725

In the last 90 days, Griffon Corp insiders filed 0 open-market purchases and 11 sales; 346 institutions reported holding it in 13F filings for Q2 2026, worth $3.56B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Griffon Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
11 filings
5 insiders, $20.3M in total
Insiders trading
5
Net value
−$20.3M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Griffon Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Griffon Corp
NameTitleLast reported holdingLast filingFilings, past year
Turnbull Cheryl LDirector30,039Aug 14, 20262
Sullivan Kevin FDirector40,602Aug 14, 20262
Mehmel Robert FPresident and COO723,032Aug 13, 202610
Harris Brian GEVP, Chief Financial Officer128,649Aug 11, 20265
Kramer Ronald JChairman of the Board and CEO1,684,297Aug 7, 20265
Alpert Henry ADirector71,479Mar 9, 20263
Sight James WDirector15,212Feb 20, 20262
Coben Jerome LDirector19,459Feb 20, 20261
Diao H.C. CharlesDirector12,013Feb 20, 20261
Grabowsky Louis J.Director43,010Feb 20, 20262
Johnson Lacy M.Director26,443Feb 20, 20261
Stewart Samanta HDirector26,055Feb 20, 20261
Taylor Michelle LDirector10,363Feb 20, 20262
Durborow W. ChristopherVice President & CAO29,963Feb 18, 20262
Kaplan Seth L.Sr VP, Gen. Counsel and Secy119,747Feb 11, 20263
Renuart Victor EugeneDirector19,312Nov 29, 20240
Voss Capital, LPDirector, Other: See Remarks276Feb 22, 20240
Voss Advisors GP, LLCDirector, Other: See Remarks276Feb 22, 20240
Cocke Travis W.Director, Other: See Remarks276Feb 22, 20240
Voss Value-Oriented Special Situations Fund, LPDirector, Other: See Remarks276Feb 22, 20240
Voss Value Master Fund, LPDirector, Other: See Remarks276Feb 22, 20240
Voss Value Master Fund, L.P.Director1,556,953IndirectJan 24, 20230
Brosig ThomasDirector39,273Mar 4, 20220
Harrison Robert GDirector50,296Mar 4, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 14, 2026 (view filing)4:31 PM ETAug 131 dayTurnbull Cheryl LDirectorSSale−3.00K$106.12−$318.4K−9.1%30.0K after
Aug 14, 2026 (view filing)4:31 PM ETAug 131 daySullivan Kevin FDirectorSSale−3.50K$105.59−$369.6K−7.9%40.6K after
Aug 13, 2026 (view filing)4:30 PM ETAug 112 daysMehmel Robert FPresident and COOSSale−3.24K$107.16−$347.2K−0.4%723.0K after10b5-1
Aug 11, 2026 (view filing)4:15 PM ETAug 7-104 daysMehmel Robert FPresident and COOSSale−22.6K$106.47−$2.40M−3.0%726.3K after6 lots10b5-1
Aug 11, 2026 (view filing)4:15 PM ETAug 74 daysHarris Brian GEVP, Chief Financial OfficerSSale−5.27K$107.11−$564.1K−3.9%128.6K after10b5-1
Aug 7, 2026 (view filing)5:02 PM ETAug 52 daysHarris Brian GEVP, Chief Financial OfficerSSale−11.1K$103.27−$1.14M−7.6%133.9K after2 lots10b5-1
Aug 7, 2026 (view filing)5:02 PM ETAug 52 daysKramer Ronald JChairman of the Board and CEOSSale−100.0K$102.42−$10.2M−5.6%1.68M after5 lots10b5-1
Aug 7, 2026 (view filing)5:02 PM ETAug 5-62 daysMehmel Robert FPresident and COOSSale−37.1K$103.32−$3.83M−4.7%748.8K after12 lots10b5-1
Jul 2, 2026 (view filing)5:00 PM ETJun 302 daysMehmel Robert FPresident and COOSSale−4.17K$97.76−$407.3K−0.5%785.9K after10b5-1
Jul 2, 2026 (view filing)5:00 PM ETJun 302 daysHarris Brian GEVP, Chief Financial OfficerSSale−6.18K$98.01−$606.0K−4.1%145.0K after10b5-1
Jun 30, 2026 (view filing)Jun 264 daysMehmel Robert FPresident and COOSSale−286$95.66−$27.4K0.0%790.1K after3 lots10b5-1
Jun 26, 2026 (view filing)Jun 24-252 daysMehmel Robert FPresident and COOSSale−12.6K$95.81−$1.21M−1.6%790.4K after5 lots10b5-1
Jun 18, 2026 (view filing)Jun 16-172 daysMehmel Robert FPresident and COOSSale−3.56K$95.39−$340.1K−0.4%803.0K after3 lots10b5-1
Jun 16, 2026 (view filing)Jun 12-154 daysMehmel Robert FPresident and COOSSale−8.77K$95.26−$835.7K−1.1%806.5K after2 lots10b5-1
Jun 15, 2026 (view filing)Jun 123 daysKramer Ronald JChairman of the Board and CEOSSale−100.0K$94.92−$9.49M−5.3%1.78M after2 lots
Jun 15, 2026 (view filing)Jun 114 daysHarris Brian GEVP, Chief Financial OfficerSSale−7.50K$95.03−$712.7K−4.7%151.1K after10b5-1
Mar 9, 2026 (view filing)Mar 54 daysAlpert Henry ADirectorPPurchase+1.00K$79.99+$80.0K+1.4%71.5K after
Feb 18, 2026 (view filing)Feb 171 dayDurborow W. ChristopherVice President & CAOSSale−10.0K$91.97−$919.7K−25.0%30.0K after
Feb 17, 2026 (view filing)Feb 134 daysGrabowsky Louis J.DirectorSSale−11.0K$93.06−$1.02M−20.9%41.7K after
Feb 17, 2026 (view filing)Feb 125 daysTaylor Michelle LDirectorSSale−1.65K$92.56−$152.7K−15.5%9.02K after
Feb 11, 2026 (view filing)Feb 92 daysKaplan Seth L.Sr VP, Gen. Counsel and SecySSale−15.0K$95.44−$1.43M−11.1%119.7K after4 lots
Feb 11, 2026 (view filing)Feb 92 daysSight James WDirectorSSale−3.07K$96.15−$295.2K−18.1%13.9K after
Feb 10, 2025 (view filing)Feb 73 daysStewart Samanta HDirectorSSale−1.24K$79.47−$98.2K−5.1%23.1K after
Feb 7, 2025 (view filing)Feb 61 dayTurnbull Cheryl LDirectorSSale−3.00K$80.80−$242.4K−8.9%30.7K after
Feb 7, 2025 (view filing)Feb 61 daySight James WDirectorSSale−1.36K$81.00−$110.2K−8.1%15.3K after
Dec 6, 2024 (view filing)Dec 6Same dayDurborow W. ChristopherVice President & CAOSSale−5.17K$80.38−$415.6K−10.4%44.3K after
Dec 3, 2024 (view filing)Dec 21 dayKaplan Seth L.Sr VP, Gen. Counsel and SecySSale−12.7K$82.73−$1.05M−8.1%144.3K after3 lots10b5-1
Dec 3, 2024 (view filing)Dec 21 dayHarris Brian GEVP, Chief Financial OfficerSSale−18.5K$82.60−$1.53M−10.0%166.3K after2 lots10b5-1
Nov 29, 2024 (view filing)Jul 5, 2019-Nov 26, 20241,974 daysLateRenuart Victor EugeneDirectorSSale−17.1K$38.73−$663.4K−47.0%19.3K after7 lots
Nov 20, 2024 (view filing)Nov 182 daysSullivan Kevin FDirectorSSale−9.22K$75.50−$696.3K−18.3%41.2K after
Nov 15, 2024 (view filing)Nov 141 daySight James WDirectorSSale−3.66K$76.42−$279.7K−18.0%16.7K after
Nov 15, 2024 (view filing)Nov 132 daysMehmel Robert FPresident and COOSSale−25.0K$74.97−$1.87M−3.4%712.9K after5 lots10b5-1
Nov 15, 2024 (view filing)Nov 141 dayCoben Jerome LDirectorSSale−2.05K$76.34−$156.6K−11.0%16.5K after
Nov 15, 2024 (view filing)Nov 141 dayStewart Samanta HDirectorSSale−3.10K$80.49−$249.1K−11.3%24.4K after
Nov 15, 2024 (view filing)Nov 141 dayGrabowsky Louis J.DirectorSSale−11.0K$77.02−$847.3K−17.7%51.1K after2 lots
Nov 13, 2024 (view filing)Nov 11-132 daysKramer Ronald JChairman of the Board and CEOSSale−308.9K$74.20−$22.9M−14.2%1.86M after9 lots10b5-1
Nov 13, 2024 (view filing)Nov 112 daysMehmel Robert FPresident and COOSSale−8.70K$70.10−$609.7K−1.2%737.9K after10b5-1
Oct 18, 2024 (view filing)Oct 162 daysMehmel Robert FPresident and COOSSale−912$70.06−$63.9K−0.1%746.6K after10b5-1
Oct 18, 2024 (view filing)Oct 162 daysKramer Ronald JChairman of the Board and CEOSSale−6.53K$70.06−$457.6K−0.3%2.17M after10b5-1
Oct 4, 2024 (view filing)Oct 22 daysKramer Ronald JChairman of the Board and CEOSSale−300$70.07−$21.0K0.0%2.18M after10b5-1
Oct 1, 2024 (view filing)Sep 27-Oct 14 daysMehmel Robert FPresident and COOSSale−3.35K$70.04−$234.6K−0.4%747.5K after2 lots10b5-1
Oct 1, 2024 (view filing)Sep 27-Oct 14 daysKramer Ronald JChairman of the Board and CEOSSale−18.6K$70.02−$1.30M−0.8%2.18M after3 lots10b5-1
Sep 25, 2024 (view filing)Sep 232 daysMehmel Robert FPresident and COOSSale−3.17K$70.01−$222.2K−0.4%750.9K after10b5-1
Sep 25, 2024 (view filing)Sep 232 daysKramer Ronald JChairman of the Board and CEOSSale−20.1K$70.01−$1.41M−0.9%2.20M after10b5-1
Sep 23, 2024 (view filing)Sep 19-204 daysKramer Ronald JChairman of the Board and CEOSSale−45.5K$70.05−$3.19M−2.0%2.22M after2 lots10b5-1
Sep 23, 2024 (view filing)Sep 19-204 daysMehmel Robert FPresident and COOSSale−8.87K$70.03−$621.0K−1.2%754.0K after2 lots10b5-1
Sep 20, 2024 (view filing)Sep 18-192 daysKaplan Seth L.Sr VP, Gen. Counsel and SecySSale−35.3K$70.00−$2.47M−17.3%168.1K after2 lots10b5-1
Sep 19, 2024 (view filing)Sep 172 daysHarris Brian GSVP, Chief Financial OfficerSSale−5.82K$67.65−$393.7K−2.9%193.7K after10b5-1
Sep 19, 2024 (view filing)Sep 17-182 daysMehmel Robert FPresident and COOSSale−25.0K$68.04−$1.70M−3.2%762.9K after5 lots10b5-1
Sep 17, 2024 (view filing)Sep 13-164 daysHarris Brian GSVP, Chief Financial OfficerSSale−13.6K$66.13−$897.0K−6.4%199.5K after3 lots10b5-1