#1 Restricted shares granted under the Company's 2016 Equity Incentive Plan in a transaction exempt under Rule 16b. Vesting of the restricted shares is partially dependent on the attainment of specified financial performance criteria; on November 12, 2024, it was certified that such financial performance criteria was satisfied. Subject to the reporting person's continued employment, the restricted shares will vest on November 30, 2026.

#1 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.50 to $67.51, inclusive. The reporting person undertakes to provide Griffon Corporation, any security holder of Griffon Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares disposed of at each price within the range set forth in this footnote.

#1 The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $80.13 to $80.71, inclusive. The reporting person undertakes to provide Griffon Corporation, any security holder of Griffon Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.