Transaction Details

Footnotes

The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 7, 2025, during an open trading window. | Represents the weighted average sale price. The lowest price at which shares were sold was $226.32 and the highest price at which shares were sold was $227.29. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the ranges set forth in footnotes (2) and (4) through (14) to this Form 4. | Represents shares of the Issuer's Class A Common Stock beneficially owned by the Reporting Person and his spouse. | Represents the weighted average sale price. The lowest price at which shares were sold was $227.34 and the highest price at which shares were sold was $228.24. | Represents the weighted average sale price. The lowest price at which shares were sold was $228.66 and the highest price at which shares were sold was $229.56. | Represents the weighted average sale price. The lowest price at which shares were sold was $229.76 and the highest price at which shares were sold was $230.70. | Represents the weighted average sale price. The lowest price at which shares were sold was $230.78 and the highest price at which shares were sold was $231.66. | Represents the weighted average sale price. The lowest price at which shares were sold was $231.84 and the highest price at which shares were sold was $232.62. | Represents the weighted average sale price. The lowest price at which shares were sold was $232.91 and the highest price at which shares were sold was $233.82. | Represents the weighted average sale price. The lowest price at which shares were sold was $233.92 and the highest price at which shares were sold was $234.46. | Represents the weighted average sale price. The lowest price at which shares were sold was $234.95 and the highest price at which shares were sold was $235.92. | Represents the weighted average sale price. The lowest price at which shares were sold was $235.95 and the highest price at which shares were sold was $236.92. | Represents the weighted average sale price. The lowest price at which shares were sold was $236.98 and the highest price at which shares were sold was $237.95. | Represents the weighted average sale price. The lowest price at which shares were sold was $238.00 and the highest price at which shares were sold was $238.32. | Represents securities received in exchange for 1,511,768 shares of the Series Seed preferred stock of The Clearing Company of San Francisco, Inc. ("TCCSF") in connection with the acquisition of TCCSF by the Issuer (the "Merger"), the consideration of which consisted of shares of the Issuer's Class A Common Stock and cash. On the effective date of the Merger, the closing price of the Issuer's Class A Common Stock was $236.53 per share. | These shares are held by USV 2024, LP. The Reporting Person, a member of the Board of Directors of the Issuer, is a managing member of the general partner of USV 2024, LP, and therefore may be deemed to have shared voting and investment power with regard to the shares held directly by USV 2024, LP. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein, if any. | Represents securities received in exchange for 38,618 shares of the Series Seed preferred stock of TCCSF in connection with the Merger, the consideration of which consisted of shares of the Issuer's Class A Common Stock and cash. On the effective date of the Merger, the closing price of the Issuer's Class A Common Stock was $236.53 per share. | These shares are held by USV Investors 2024, LP. The Reporting Person, a member of the Board of Directors of the Issuer, is a managing member of the general partner of USV Investors 2024, LP, and therefore may be deemed to have shared voting and investment power with regard to the shares held directly by USV Investors 2024, LP. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein, if any. | Each of the Reporting Person and his spouse is a managing member of FJW Partners, LLC and, as such, may be deemed to share voting and dispositive power over the shares owned by FJW Partners, LLC. The Reporting Person disclaims beneficial ownership of the shares owned by FJW Partners, LLC, except to the extent of his pecuniary interest therein, if any. | These shares are held of record by The Fred and Joanne Wilson 2012 Delaware Trust, of which the Reporting Person's spouse is the grantor. The Reporting Person disclaims beneficial ownership of the shares owned by The Fred and Joanne Wilson 2012 Delaware Trust, except to the extent of his pecuniary interest therein, if any.