Filings under GFF by Instrumentation Services Inc (CIK 0000050729) from Feb 7, 2011 to Feb 7, 2011 belong to a different issuer and are not shown.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | Turnbull Cheryl L | Director | Sell(S) | 3K | $106.12 | $318K |
| Aug 13, 2026 | Sullivan Kevin F | Director | Sell(S) | 4K | $105.59 | $370K |
| Aug 11, 2026 | Mehmel Robert F | President and COO | Sell(S) | 3K | $107.16 | $347K |
| Aug 10, 2026 | Mehmel Robert F | President and COO | Sell(S) | 88 | $105.21 | $9K |
| Aug 10, 2026 | Mehmel Robert F | President and COO | Sell(S) | 4K | $104.08 | $379K |
| Aug 10, 2026 | Mehmel Robert F | President and COO | Sell(S) | 3K | $104.64 | $305K |
| Aug 7, 2026 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 5K | $107.11 | $564K |
| Aug 7, 2026 | Mehmel Robert F | President and COO | Sell(S) | 13K | $107.43 | $1.4M |
| Aug 7, 2026 | Mehmel Robert F | President and COO | Sell(S) | 553 | $108.09 | $60K |
| Aug 7, 2026 | Mehmel Robert F | President and COO | Sell(S) | 2K | $106.60 | $204K |
| Aug 6, 2026 | Mehmel Robert F | President and COO | Sell(S) | 211 | $103.52 | $22K |
| Aug 6, 2026 | Mehmel Robert F | President and COO | Sell(S) | 7K | $105.46 | $731K |
| Aug 6, 2026 | Mehmel Robert F | President and COO | Sell(S) | 5K | $104.56 | $573K |
| Aug 6, 2026 | Mehmel Robert F | President and COO | Sell(S) | 158 | $102.03 | $16K |
| Aug 6, 2026 | Mehmel Robert F | President and COO | Sell(S) | 2K | $106.27 | $220K |
| Aug 5, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 17K | $101.58 | $1.8M |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 617 | $98.68 | $61K |
| Aug 5, 2026 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 2K | $104.01 | $232K |
| Aug 5, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 16K | $103.37 | $1.7M |
| Aug 5, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 13K | $100.44 | $1.3M |
| Aug 5, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 45K | $102.63 | $4.6M |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 5K | $103.53 | $563K |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 5K | $102.59 | $548K |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 2K | $104.12 | $231K |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 3K | $101.44 | $283K |
| Aug 5, 2026 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 9K | $103.08 | $909K |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 4K | $100.46 | $354K |
| Aug 5, 2026 | Mehmel Robert F | President and COO | Sell(S) | 2K | $99.67 | $228K |
| Aug 5, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 8K | $104.27 | $847K |
| Jun 30, 2026 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 6K | $98.01 | $606K |
| Jun 30, 2026 | Mehmel Robert F | President and COO | Sell(S) | 4K | $97.76 | $407K |
| Jun 26, 2026 | Mehmel Robert F | President and COO | Sell(S) | 52 | $96.14 | $5K |
| Jun 26, 2026 | Mehmel Robert F | President and COO | Sell(S) | 230 | $95.52 | $22K |
| Jun 26, 2026 | Mehmel Robert F | President and COO | Sell(S) | 4 | $97.50 | $390 |
| Jun 25, 2026 | Mehmel Robert F | President and COO | Sell(S) | 1K | $97.27 | $116K |
| Jun 25, 2026 | Mehmel Robert F | President and COO | Sell(S) | 2K | $96.41 | $148K |
| Jun 25, 2026 | Mehmel Robert F | President and COO | Sell(S) | 5K | $95.62 | $492K |
| Jun 24, 2026 | Mehmel Robert F | President and COO | Sell(S) | 5K | $95.45 | $442K |
| Jun 24, 2026 | Mehmel Robert F | President and COO | Sell(S) | 100 | $96.03 | $10K |
| Jun 17, 2026 | Mehmel Robert F | President and COO | Sell(S) | 547 | $95.37 | $52K |
| Jun 16, 2026 | Mehmel Robert F | President and COO | Sell(S) | 3K | $95.36 | $279K |
| Jun 16, 2026 | Mehmel Robert F | President and COO | Sell(S) | 97 | $96.25 | $9K |
| Jun 15, 2026 | Mehmel Robert F | President and COO | Sell(S) | 3K | $95.40 | $312K |
| Jun 12, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 51K | $95.21 | $4.9M |
| Jun 12, 2026 | Kramer Ronald J | Chairman of the Board and CEO, Director | Sell(S) | 49K | $94.62 | $4.6M |
| Jun 12, 2026 | Mehmel Robert F | President and COO | Sell(S) | 6K | $95.18 | $524K |
| Jun 11, 2026 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 8K | $95.03 | $713K |
| Mar 5, 2026 | Alpert Henry A | Director | Buy(P) | 1K | $79.99 | $80K |
| Feb 18, 2026 | Johnson Lacy M. | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Alpert Henry A | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Sullivan Kevin F | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Sight James W | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Hegedus Samanta | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Turnbull Cheryl L | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Taylor Michelle L | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Grabowsky Louis J. | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Coben Jerome L | Director | Grant(A) | 1K | — | $0 |
| Feb 18, 2026 | Diao H.C. Charles | Director | Grant(A) | 1K | — | $0 |
| Feb 17, 2026 | Durborow W. Christopher | Vice President & CAO | Sell(S) | 10K | $91.97 | $920K |
| Feb 13, 2026 | Grabowsky Louis J. | Director | Sell(S) | 11K | $93.06 | $1.0M |
| Feb 12, 2026 | Taylor Michelle L | Director | Sell(S) | 2K | $92.56 | $153K |
| Feb 9, 2026 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell(S) | 4K | $95.61 | $409K |
| Feb 9, 2026 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell(S) | 3K | $96.67 | $313K |
| Feb 9, 2026 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell(S) | 400 | $97.46 | $39K |
| Feb 9, 2026 | Sight James W | Director | Sell(S) | 3K | $96.15 | $295K |
| Feb 9, 2026 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Sell(S) | 7K | $94.67 | $671K |
| Dec 24, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Gift(G) | 5K | — | $0 |
| Dec 24, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Gift(G) | 63K | — | $0 |
| Dec 22, 2025 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Gift(G) | 600 | — | $0 |
| Dec 4, 2025 | Alpert Henry A | Director | Gift(G) | 2K | — | $0 |
| Nov 30, 2025 | Harris Brian G | EVP, Chief Financial Officer | Tax withholding(F) | 8K | $75.00 | $571K |
| Nov 30, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Tax withholding(F) | 74K | $75.00 | $5.6M |
| Nov 30, 2025 | Kaplan Seth L. | Sr VP, Gen. Counsel and Secy | Tax withholding(F) | 9K | $75.00 | $669K |
| Nov 30, 2025 | Durborow W. Christopher | Vice President & CAO | Tax withholding(F) | 4K | $75.00 | $326K |
| Nov 30, 2025 | Mehmel Robert F | President and COO | Tax withholding(F) | 27K | $75.00 | $2.0M |
| Nov 18, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Grant(A) | 137K | — | $0 |
| Nov 18, 2025 | Mehmel Robert F | President and COO | Grant(A) | 68K | — | $0 |
| Mar 11, 2025 | Diao H.C. Charles | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Taylor Michelle L | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Grabowsky Louis J. | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Sullivan Kevin F | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Alpert Henry A | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Coben Jerome L | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Johnson Lacy M. | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Hegedus Samanta | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Sight James W | Director | Grant(A) | 2K | — | $0 |
| Mar 11, 2025 | Turnbull Cheryl L | Director | Grant(A) | 2K | — | $0 |
| Feb 27, 2025 | Alpert Henry A | Director | Gift(G) | 1K | — | $0 |
| Feb 7, 2025 | Hegedus Samanta | Director | Sell(S) | 1K | $79.47 | $98K |
| Feb 6, 2025 | Turnbull Cheryl L | Director | Sell(S) | 3K | $80.80 | $242K |
| Feb 6, 2025 | Sight James W | Director | Sell(S) | 1K | $81.00 | $110K |
| Feb 4, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Tax withholding(F) | 378K | $76.95 | $29.1M |
| Feb 4, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Grant(A) | 108K | — | $0 |
| Feb 4, 2025 | Kramer Ronald J | Chairman of the Board and CEO, Director | Grant(A) | 303K | — | $0 |
| Feb 4, 2025 | Mehmel Robert F | President and COO | Grant(A) | 151K | — | $0 |
| Feb 4, 2025 | Mehmel Robert F | President and COO | Grant(A) | 36K | — | $0 |
| Feb 4, 2025 | Mehmel Robert F | President and COO | Tax withholding(F) | 112K | $76.95 | $8.6M |
| Dec 6, 2024 | Durborow W. Christopher | Vice President & CAO | Sell(S) | 5K | $80.38 | $416K |
| Dec 5, 2024 | Kramer Ronald J | Chairman of the Board and CEO, Director | Gift(G) | 4K | — | $0 |
| Dec 2, 2024 | Harris Brian G | EVP, Chief Financial Officer | Sell(S) | 5K | $83.11 | $379K |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Issuer: Griffon Corp, SEC CIK 0000050725. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under GFF and shows every filing by that issuer. Earlier filings under the same symbol by another issuer are left out.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-05. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for GFF