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GRIFFON CORP insider trading

GFFNYSE
$93.97+0.82 (+0.88%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+21.2%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
DateCategoryPersonRoleActionAmountChange in holding
Open market purchase
Open market sell
Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

  • RJRonald J. KramerChairman of the Board and CEO3.8191%of company
  • RFRobert F. MehmelPresident and COO1.6056%of company
  • BGBrian G. HarrisEVP, Chief Financial Officer0.2949%of company
  • SLSeth L. KaplanSr VP, Gen. Counsel and Secy0.2749%of company
  • HAHenry A. AlpertDirector0.1578%of company
  • LJLouis J. GrabowskyDirector0.095%of company
  • KFKevin F. SullivanDirector0.0896%of company
  • DWDurborow W. ChristopherVice President & CAO0.0733%of company
  • CLCheryl L. TurnbullDirector0.0665%of company
  • LMLacy M. JohnsonDirector0.0584%of company

AI Activity Analysis

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Insider activity

Fromto
CompanyInsider / roleActionΔOwnAvg priceAmount
GFFCheryl L. TurnbullDirectorOpen market sell$318K-9.1%$106.12$318KAug 13, 2026Aug 14, 2026
GFFKevin F. SullivanDirectorOpen market sell$370K-7.9%$105.59$370KAug 13, 2026Aug 14, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$347K-0.4%$107.16$347KAug 11, 2026Aug 13, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$9.26K0.0%$105.21$9.26KAug 10, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$305K-0.4%$104.64$305KAug 10, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$379K-0.5%$104.08$379KAug 10, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$59.8K-0.1%$108.09$59.8KAug 7, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$1.45M-1.8%$107.43$1.45MAug 7, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$204K-0.3%$106.60$204KAug 7, 2026Aug 11, 2026
GFFBrian G. HarrisEVP, Chief Financial OfficerOpen market sell$564K-3.8%$107.11$564KAug 7, 2026Aug 11, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$220K-0.3%$106.27$220KAug 6, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$731K-0.9%$105.46$731KAug 6, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$573K-0.7%$104.56$573KAug 6, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$21.8K0.0%$103.52$21.8KAug 6, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$16.1K0.0%$102.03$16.1KAug 6, 2026Aug 7, 2026
GFFBrian G. HarrisEVP, Chief Financial OfficerOpen market sell$232K-1.6%$104.01$232KAug 5, 2026Aug 7, 2026
GFFBrian G. HarrisEVP, Chief Financial OfficerOpen market sell$909K-5.9%$103.08$909KAug 5, 2026Aug 7, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$847K-0.5%$104.27$847KAug 5, 2026Aug 7, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$1.7M-0.9%$103.37$1.7MAug 5, 2026Aug 7, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$4.64M-2.5%$102.63$4.64MAug 5, 2026Aug 7, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$1.76M-1.0%$101.58$1.76MAug 5, 2026Aug 7, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$1.3M-0.7%$100.44$1.3MAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$231K-0.3%$104.12$231KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$563K-0.7%$103.53$563KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$548K-0.7%$102.59$548KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$283K-0.4%$101.44$283KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$354K-0.5%$100.46$354KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$228K-0.3%$99.67$228KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$60.9K-0.1%$98.68$60.9KAug 5, 2026Aug 7, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$407K-0.5%$97.76$407KJun 30, 2026Jul 2, 2026
GFFBrian G. HarrisEVP, Chief Financial OfficerOpen market sell$606K-4.0%$98.01$606KJun 30, 2026Jul 2, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$3900.0%$97.50$390Jun 26, 2026Jun 30, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$5K0.0%$96.14$5KJun 26, 2026Jun 30, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$22K0.0%$95.52$22KJun 26, 2026Jun 30, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$116K-0.2%$97.27$116KJun 25, 2026Jun 26, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$148K-0.2%$96.41$148KJun 25, 2026Jun 26, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$492K-0.6%$95.62$492KJun 25, 2026Jun 26, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$9.6K0.0%$96.03$9.6KJun 24, 2026Jun 26, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$442K-0.6%$95.45$442KJun 24, 2026Jun 26, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$52.2K-0.1%$95.37$52.2KJun 17, 2026Jun 18, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$9.34K0.0%$96.25$9.34KJun 16, 2026Jun 18, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$279K-0.4%$95.36$279KJun 16, 2026Jun 18, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$312K-0.4%$95.40$312KJun 15, 2026Jun 16, 2026
GFFRobert F. MehmelPresident and COOOpen market sell$524K-0.7%$95.18$524KJun 12, 2026Jun 16, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$4.63M-2.6%$94.62$4.63MJun 12, 2026Jun 15, 2026
GFFRonald J. KramerChairman of the Board and CEOOpen market sell$4.86M-2.6%$95.21$4.86MJun 12, 2026Jun 15, 2026
GFFBrian G. HarrisEVP, Chief Financial OfficerOpen market sell$713K-4.6%$95.03$713KJun 11, 2026Jun 15, 2026
GFFHenry A. AlpertDirectorOpen market purchase$80K+1.4%$79.99$80KMar 5, 2026Mar 9, 2026
GFFDurborow W. ChristopherVice President & CAOOpen market sell$920K-23.1%$91.97$920KFeb 17, 2026Feb 18, 2026
GFFLouis J. GrabowskyDirectorOpen market sell$1.02M-20.9%$93.06$1.02MFeb 13, 2026Feb 17, 2026
50 of 56 transactions
SpoorBase

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