Clear Secure, Inc.

1. These transactions were automatically effected pursuant to a Rule 10b5-1 trading plan previously adopted by Alclear Investments, LLC on November 20, 2025.

2. These shares were sold in multiple transactions ranging from $48.00 to $48.92. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, and the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote and in footnotes 5, 6, 7 and 8.

3. Pursuant to the terms of the Issuer's Certificate of Incorporation, each share of Class B common stock of the Issuer ("Class B Common Stock") was converted into a share of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis. The resulting shares of Class A Common Stock were used to settle the sale transaction described above, and so after the transactions reported in this Form 4, no shares of Class A Common Stock are held.

4. Alclear Investments, LLC is controlled by Ms. Seidman-Becker, its sole manager, who has dispositive control and voting control over the shares held by Alclear Investments, LLC.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $49.00 to $49.03, inclusive.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $48.06 to $48.99, inclusive.

7. The price report in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $49.00 to $49.99, inclusive.

8. The price report in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $50.00 to $50.31, inclusive.

9. Shares of Class D Common Stock have 20 votes per share but no economic rights (including rights to dividends and distributions upon liquidation) and are issued in an equal amount to the number of Common Units held.

10. Pursuant to the terms of the Exchange Agreement, dated June 29, 2021, by and among the Issuer, Alclear and the equity holders of Alclear (the "Exchange Agreement"), Common Units, together with a corresponding number of shares of Class D Common Stock, were exchanged for Class B Common Stock on a one-for-one basis. The exchange rights under the Exchange Agreement do not expire.

11. Shares of Class B common stock of the Issuer ("Class B Common Stock") have 20 votes per share and economic rights (including rights to dividends and distributions upon liquidation).