Griffon Corporation (GFF) Insider Trading

Over the last 3 months, GFF insiders made 0 open-market buys and 5 sales, a net sale of -$11.0M (SEC Form 4). Over the last 6 months, 269 institutions increased and 227 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$11.0M
Insider trades by month Buys Sells
Nov
Dec
Feb
Feb
Mar
Jun
Context3-month price +28.8%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Jun 16, 2026MEHMEL ROBERT Fofficer: President and COOSell5,501$95.18
Jun 16, 2026MEHMEL ROBERT Fofficer: President and COOSell3,272$95.40
Jun 15, 2026KRAMER RONALD Jdirector, officer: Chairman of the Board and CEOSell48,971$94.62
Jun 15, 2026Harris Brian Gofficer: EVP, Chief Financial OfficerSell7,500$95.03
Jun 15, 2026KRAMER RONALD Jdirector, officer: Chairman of the Board and CEOSell51,029$95.21
Mar 9, 2026ALPERT HENRY AdirectorBuy1,000$79.99
Feb 20, 2026SIGHT JAMES WdirectorGrant1,340
Feb 20, 2026Johnson Lacy M.directorGrant1,340
Feb 20, 2026Coben Jerome LdirectorGrant1,340
Feb 20, 2026Diao H.C. CharlesdirectorGrant1,340
Feb 20, 2026TURNBULL CHERYL LdirectorGrant1,340
Feb 20, 2026ALPERT HENRY AdirectorGrant1,340
Feb 20, 2026Grabowsky Louis J.directorGrant1,340
Feb 20, 2026Hegedus SamantadirectorGrant1,340
Feb 20, 2026Taylor Michelle LdirectorGrant1,340
Feb 20, 2026Sullivan Kevin FdirectorGrant1,340
Feb 18, 2026Durborow W. Christopherofficer: Vice President & CAOSell10,000$91.97
Feb 17, 2026Taylor Michelle LdirectorSell1,650$92.56
Feb 17, 2026Grabowsky Louis J.directorSell11,000$93.06
Feb 11, 2026SIGHT JAMES WdirectorSell3,070$96.15
Feb 11, 2026Kaplan Seth L.officer: Sr VP, Gen. Counsel and SecySell400$97.46
Feb 11, 2026Kaplan Seth L.officer: Sr VP, Gen. Counsel and SecySell3,240$96.67
Feb 11, 2026Kaplan Seth L.officer: Sr VP, Gen. Counsel and SecySell4,274$95.61
Feb 11, 2026Kaplan Seth L.officer: Sr VP, Gen. Counsel and SecySell7,086$94.67
Dec 2, 2025KRAMER RONALD Jdirector, officer: Chairman of the Board and CEOTax74,079$75.00
Dec 2, 2025Harris Brian Gofficer: EVP, Chief Financial OfficerTax7,610$75.00
Dec 2, 2025MEHMEL ROBERT Fofficer: President and COOTax26,928$75.00
Dec 2, 2025Kaplan Seth L.officer: Sr VP, Gen. Counsel and SecyTax8,921$75.00
Dec 2, 2025Durborow W. Christopherofficer: Vice President & CAOTax4,343$75.00
Nov 19, 2025MEHMEL ROBERT Fofficer: President and COOGrant68,432

Source: GFF SEC Form 4 filings, latest Jun 16, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their GFF positions over the last 6 months (SEC Form 13F).

Increased
269
New positions
90
Reduced
227
Sold out
67
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Increased6.0MMay 13, 2026
BLACKROCK, INC.Increased5.9MFeb 12, 2026
VANGUARD GROUP INCReduced5.9MJan 29, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position3.7MMay 8, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position1.9MMay 15, 2026
VOSS CAPITAL, LLCIncreased1.8MMay 15, 2026
VOSS CAPITAL, LLCIncreased1.8MFeb 13, 2026
STATE STREET CORPIncreased1.5MFeb 13, 2026
STATE STREET CORPReduced1.5MMay 15, 2026
DIMENSIONAL FUND ADVISORS LPReduced1.0MFeb 12, 2026
DIMENSIONAL FUND ADVISORS LPReduced1.0MMay 7, 2026
FULLER & THALER ASSET MANAGEMENT, INC.Increased1.0MFeb 18, 2026
FULLER & THALER ASSET MANAGEMENT, INC.Reduced1.0MMay 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased924KMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased922KFeb 9, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.