Form4insider filings, from the source

Company · CIK 0000050725 · SIC 3442 — Metal Doors, Sash, Frames, Moldings & Trim · NYSE

GRIFFON CORP · GFF

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $32.8M · 16net −$32.8M
$10k$10k$1M$1M$100M$100MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 13, 2026 SForm 4 →Aug 14, 4:31 pm EDTCheryl L TurnbullDirector3,000$106.12$318,36030,039−9.08%
Aug 13, 2026 SForm 4 →Aug 14, 4:31 pm EDTKevin F SullivanDirector3,500$105.59$369,56540,602−7.94%
Aug 11, 2026 SForm 4 →Aug 13, 4:30 pm EDTRobert F MehmelPresident and COO3,240$107.16$347,198723,032−0.45%10b5-1
Aug 7, 2026 SForm 4 →Aug 11, 4:15 pm EDTRobert F MehmelPresident and COO22,567$106.47$2,402,642726,272−3.01%10b5-1
Aug 7, 2026 SForm 4 →Aug 11, 4:15 pm EDTBrian G HarrisEVP, Chief Financial Officer5,267$107.11$564,148128,649−3.93%10b5-1
Aug 5, 2026 SForm 4 →Aug 7, 5:02 pm EDTBrian G HarrisEVP, Chief Financial Officer11,050$103.27$1,141,111133,916−7.62%10b5-1
Aug 5, 2026 SForm 4 →Aug 7, 5:02 pm EDTRonald J KramerChairman of the Board and CEO, Director100,000$102.42$10,241,9801,684,297−5.60%10b5-1
Aug 5, 2026 SForm 4 →Aug 7, 5:02 pm EDTRobert F MehmelPresident and COO37,061$103.32$3,829,214748,839−4.72%10b5-1
Jun 30, 2026 SForm 4 →Jul 2, 5:00 pm EDTRobert F MehmelPresident and COO4,166$97.76$407,268785,900−0.53%10b5-1
Jun 30, 2026 SForm 4 →Jul 2, 5:00 pm EDTBrian G HarrisEVP, Chief Financial Officer6,183$98.01$605,996144,966−4.09%10b5-1
Jun 26, 2026 SForm 4 →Jun 30, 5:00 pm EDTRobert F MehmelPresident and COO286$95.66$27,359790,066−0.04%10b5-1
Jun 24, 2026 SForm 4 →Jun 26, 5:00 pm EDTRobert F MehmelPresident and COO12,599$95.81$1,207,146790,352−1.57%10b5-1
Jun 16, 2026 SForm 4 →Jun 18, 5:00 pm EDTRobert F MehmelPresident and COO3,565$95.39$340,050802,951−0.44%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:59 pm EDTRobert F MehmelPresident and COO8,773$95.26$835,734806,516−1.08%10b5-1
Jun 12, 2026 SForm 4 →Jun 15, 5:00 pm EDTRonald J KramerChairman of the Board and CEO, Director100,000$94.92$9,492,1071,784,297−5.31%
Jun 11, 2026 SForm 4 →Jun 15, 5:00 pm EDTBrian G HarrisEVP, Chief Financial Officer7,500$95.03$712,725151,149−4.73%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.