GRIFFON CORP

Management's Quarterly Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of Griffon’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), Griffon’s disclosure controls and procedures, as defined by Exchange Act Rule 13a-15(e) and 15d-15(e), were evaluated as of the end of the period covered by this report. Based on that evaluation, Griffon’s CEO and CFO concluded that Griffon’s disclosure controls and procedures were effective at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting

There were no changes in Griffon’s internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f)) that occurred during the three months ended June 30, 2026 that have materially affected, or are reasonably likely to materially affect, Griffon’s internal control over financial reporting.

Limitations on the Effectiveness of Controls

Griffon believes that a control system, no matter how well designed and operated, cannot provide absolute assurance that the objectives of the control system are met, and no evaluation of controls can provide absolute assurance that all controls issues and instances of fraud, if any, within a company have been detected. Griffon’s disclosure controls and procedures, as defined by Exchange Act Rule 13a-15(e) and 15d-15(e), are designed to provide reasonable assurance of achieving their objectives.