144 0001195908 XXXXXXXX LIVE 0000050725 Griffon Corporation 001-06620 712 Fifth Avenue New York NY 10019 212-957-5000 Ronald J. Kramer Director and Officer Common Stock Deutsche Bank Securities Inc. One Columbus Circle New York NY 10019 100000 9358000 45294716 08/05/2026 NYSE Common Stock 12/17/2023 Vesting of Restricted Stock Griffon Corporation N 70659 12/17/2023 N/A Common Stock 12/20/2022 Vesting of Restricted Stock Griffon Corporation N 29341 12/20/2022 N/A N Ronald J. Kramer c/o Griffon Corporation 712 Fifth Avenue New York NY 10019 Common Stock 06/12/2026 100000 9492421 The shares covered by this Form 144 are being sold pursuant to a Rule 10b5-1 Sales Plan dated February 12, 2025, which is intended to comply with Rule 10b5-1. The representation herein regarding Seller's knowledge of material information speaks as of the adoption of that Sales Plan. 08/05/2026 /s/ Seth L. Kaplan, as attorney-in-fact