144 0001491551 XXXXXXXX LIVE 0000050725 Griffon Corporation 001-06620 712 Fifth Avenue New York NY 10019 212-957-5000 Seth L. Kaplan Officer Common Stock Merrill Lynch, Pierce, Fenner & Smith Incorporated

253 Post Road West Westport CT 06880

15000 1422600 46579173 02/09/2026 NYSE Common Stock 11/30/2024 Vesting of Restricted Stock Griffon Corporation N 10419 11/30/2024 N/A Common Stock 12/18/2023 Vesting of Restricted Stock Griffon Corporation N 4581 12/18/2023 N/A Y 02/09/2026 /s/ Seth L. Kaplan