AUROW · Aurora Innovation, Inc. · Insider Trading

The reporting person previously elected to convert their cash retainer as an outside director into fully vested restricted stock units. The reported securities represent shares of the Issuer's Class A common stock determined by dividing the amount of the third quarter cash retainer the reporting person has earned as of September 30, 2026, by the average closing stock price of the Issuer's Class A common stock during the 20 trading-day period ending 5 business days before the grant date of October 1, 2026.

The reporting person previously elected to convert their cash retainer as an outside director into fully vested restricted stock units. The reported securities represent shares of the Issuer's Class A common stock determined by dividing the amount of the third quarter cash retainer the reporting person has earned as of September 30, 2026, by the average closing stock price of the Issuer's Class A common stock during the 20 trading-day period ending 5 business days before the grant date of October 1, 2026.

On September 15, 2026, Neben Holdings, LLC, a wholly-owned subsidiary of the Reporting Person, sold 29,369,611 shares of Class A Common Stock to a financial institution in a block sale transaction at a price per share of $6.2050.

Transaction was reported on Schedule 13D/A filed by the Reporting Person with the Securities and Exchange Commission ("SEC") on September 17, 2026.

Neben Holdings, LLC is the record holder of the Class A common stock of the Issuer.

Represents (i) 27,804 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on February 18, 2025; and (ii) 13,895 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 23, 2026.

Represents (i) 13,626 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on June 14, 2023; (ii) 7,786 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 8, 2024; (iii) 15,141 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 24, 2025; and (iv) 17,859 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 23, 2026.

Represents (i) 49,188 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 8, 2023; (ii) 3,514 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 8, 2024; (iii) 6,833 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 24, 2025; and (iv) 10,746 shares of Class A common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the quarterly vesting of Restricted Stock Units granted on March 23, 2026.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.11. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

On August 17, 2026, Neben Holdings, LLC, a wholly-owned subsidiary of the Reporting Person, sold 72,000,000 shares of Class A Common Stock to a financial institution in a block sale transaction at a price per share of $6.55.

Transaction was reported on Schedule 13D/A filed by the Reporting Person with the Securities and Exchange Commission ("SEC") on August 19, 2026.

Neben Holdings, LLC is the record holder of the Class A common stock of the Issuer.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.11. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.025. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.025. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.0245. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.0245. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.9142 to $7.0807. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.9142 to $7.0807. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

Reflects the transfer of 908,784 shares of Class A Common Stock as a bona fide gift to a charitable donor-advised fund on August 10, 2026. There was no purchase or sale of shares of Class A Common Stock in connection with the gift.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.015. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.015. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.1399. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.1399. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The shares of Class B Common Stock are convertible at any time at the option of the holder into shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, and automatically convert into Class A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares of the Issuer's Class A Common Stock (the "Common Stock") were sold in multiple transactions at prices ranging from $7.00 to $7.24. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Index Ventures Growth III (Jersey) L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III. The Reporting Person is a retired partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to Index Growth III. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The price reported in column 4 is a weighted average price. These shares of the Issuer's Class A Common Stock (the "Common Stock") were sold in multiple transactions at prices ranging from $7.00 to $7.24. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the range set forth above.

Shares held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant fund's investment in the issuer (in this case, Index Growth III). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for Section 16 or any other purpose.

The reporting person previously elected to convert their cash retainer as an outside director into fully vested restricted stock units. The reported securities represent shares of the Issuer's Class A common stock determined by dividing the amount of the second quarter cash retainer the reporting person has earned as of June 30, 2026, by the average closing stock price of the Issuer's Class A common stock during the 20 trading-day period ending 5 business days before the grant date of July 1, 2026.

Weighted average price. This transaction was executed in multiple trades at prices of $6.03 and $6.05. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each such price.

On June 2, 2026, Neben Holdings, LLC, a wholly-owned subsidiary of the Reporting Person, sold 67,500,000 shares of Class A Common Stock to a financial institution in a block sale transaction at a price per share of $7.10.

Transaction was reported on Schedule 13D/A filed by the Reporting Person with the Securities and Exchange Commission ("SEC") on June 4, 2026.

Neben Holdings, LLC is the record holder of the Class A common stock of the Issuer.

Weighted average price. This transaction was executed in multiple trades at prices ranging from $7.08 to $7.3850 inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or 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 above.

Greylock 15 GP LLC ("Greylock LLC") is the general partner of each of Greylock 15 Limited Partnership ("Greylock 15"), Greylock 15 Principals Limited Partnership ("Greylock Principals"), and Greylock 15-A Limited Partnership ("Greylock 15-A"). By virtue of being a managing member of Greylock LLC, the reporting person may be deemed a beneficial owner of the securities held by Greylock 15, Greylock Principals, and Greylock 15-A. The reporting person disclaims beneficial ownership of the securities held by Greylock 15, Greylock Principals, and/or Greylock 15-A, except to the extent of his pecuniary interest therein.

Reflects securities held directly by Greylock 15 Principals.