X0407 4 2023-06-06 0001866692 Amplitude, Inc. AMPL 0001607841 SC US (TTGP), LTD. C/O SEQUOIA CAPITAL 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001611355 SC U.S. VENTURE 2010 MANAGEMENT, L.P. C/O SEQUOIA CAPITAL 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001563112 SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P. C/O SEQUOIA CAPITAL 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001836414 SC U.S. Growth IX Management, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001814893 Sequoia Capital U.S. Growth Fund IX, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001814914 Sequoia Capital U.S. Growth Partners Fund IX, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001814912 Sequoia Capital U.S. Growth IX Principals Fund, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001743276 SC U.S. Growth VIII Management, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001743290 Sequoia Capital U.S. Growth Fund VIII, L.P. 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0001863586 Sequoia Grove Manager, LLC 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 0 0 1 0 0 Class A Common Stock 2023-06-06 4 C 0 51876 0 A 51876 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-06 4 C 0 4711 0 A 4711 I Sequoia Grove II, LLC Class A Common Stock 2023-06-06 4 S 0 51876 10.15 D 0 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-06 4 S 0 4711 10.15 D 0 I Sequoia Grove II, LLC Class A Common Stock 2023-06-07 4 C 0 237330 0 A 237330 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-07 4 C 0 21552 0 A 21552 I Sequoia Grove II, LLC Class A Common Stock 2023-06-07 4 S 0 237330 10.06 D 0 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-07 4 S 0 21552 10.06 D 0 I Sequoia Grove II, LLC Class A Common Stock 2023-06-08 4 C 0 7708 0 A 7708 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-08 4 C 0 700 0 A 700 I Sequoia Grove II, LLC Class A Common Stock 2023-06-08 4 S 0 7708 10.06 D 0 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class A Common Stock 2023-06-08 4 S 0 700 10.06 D 0 I Sequoia Grove II, LLC Class A Common Stock 2225077 I Sequoia Capital U.S. Growth Fund IX, L.P. Class A Common Stock 242788 I Sequoia Capital U.S. Growth IX Principals Fund, L.P. Class A Common Stock 95885 I Sequoia Capital U.S. Growth Partners Fund IX, L.P. Class A Common Stock 235201 I Sequoia Capital U.S. Venture 2010-Seed Fund, L.P Class B Common Stock 2023-06-06 4 C 0 51876 D Class A Common Stock 51876 5114497 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class B Common Stock 2023-06-06 4 C 0 4711 D Class A Common Stock 4711 398113 I Sequoia Grove II, LLC Class B Common Stock 2023-06-07 4 C 0 237330 D Class A Common Stock 237330 4877167 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class B Common Stock 2023-06-07 4 C 0 21552 D Class A Common Stock 21552 376561 I Sequoia Grove II, LLC Class B Common Stock 2023-06-08 4 C 0 7708 D Class A Common Stock 7708 4869459 I Sequoia Capital U.S. Growth Fund VIII, L.P. Class B Common Stock 2023-06-08 4 C 0 700 D Class A Common Stock 700 375861 I Sequoia Grove II, LLC The Issuer's Class B Common Stock is convertible into the Issuer's Class A Common Stock on a one-for-one basis at the election of the holder thereof and has no expiration date. In addition, upon any transfer of shares of Class B Common Stock, each such transferred share will automatically convert into one share of Class A Common Stock, except for certain "Permitted Transfers" described in the Issuer's certificate of incorporation. SC US (TTGP), Ltd. is (i) the general partner of SC U.S. Growth VIII Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund VIII, L.P. (GFVIII), (ii) the general partner of SC U.S. Venture 2010 Management, L.P., which is the general partner of Sequoia Capital U.S. Venture 2010-Seed Fund, L.P. (USV 2010-Seed), and (iii) the general partner of SC U.S. Growth IX Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund IX, L.P., Sequoia Capital U.S. Growth Partners Fund IX, L.P., and Sequoia Capital U.S. Growth IX Principals Fund, L.P. (collectively "the GFIX Funds"). (Continued from Footnote 2) Each of SC US (TTGP), Ltd., SC U.S. Growth VIII Management, L.P., SC U.S. Venture 2010 Management, L.P., and SC U.S. Growth IX Management, L.P. disclaims beneficial ownership of the shares held by GFVIII, USV 2010-Seed, and the GFIX Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.80 to $10.33. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares purchased at each separate price within the ranges set forth above. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $10.00 to $10.49. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares purchased at each separate price within the ranges set forth above. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $10.00 to $10.22. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares purchased at each separate price within the ranges set forth above. Sequoia Grove Manager, LLC is a manager of Sequoia Grove II, LLC. Each of Sequoia Grove Manager, LLC and Sequoia Grove II, LLC disclaim beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. Form 1 of 2 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Venture 2010 Management, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Venture 2010 Management, L.P., the General Partner of Sequoia Capital U.S. Venture 2010-Seed Fund, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth IX Management, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth IX Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund IX, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth IX Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Partners Fund IX, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth IX Management, L.P., which is the general partner of Sequoia Capital U.S. Growth IX Principals Fund, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth VIII Management, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Director of SC US (TTGP), Ltd., the General Partner of SC U.S. Growth VIII Management, L.P., the General Partner of Sequoia Capital U.S. Growth Fund VIII, L.P. 2023-06-08 By: /s/ Jung Yeon Son, by power of attorney for Roelof Botha, a Managing Member of Sequoia Grove Manager, LLC 2023-06-08