X0306 4 2023-01-15 false 0001866692 Amplitude, Inc. AMPL 0001883039 Sarkis Ninos C/O AMPLITUDE, INC. 201 THIRD ST., SUITE 200 SAN FRANCISCO CA 94103 false true false false Chief Accounting Officer Class A Common Stock 2023-01-15 4 A false 32298.00 0.00 A 86414.00 D Represents Restricted Stock Units ("RSUs"). Each RSU represents a right to receive one share of Class A Common Stock of the Issuer. The RSUs vest in eight substantially equal quarterly installments on each quarterly anniversary of November 15, 2022, subject to the continued service of the reporting person through each vesting date. Includes 38,778 RSUs. /s/ Elizabeth Fisher, as Attorney-in-Fact for Ninos Sarkis 2023-01-17