X0609 4 2026-06-09 false 0001866692 Amplitude, Inc. AMPL 0001744910 Wong Catherine false C/O AMPLITUDE,INC. 201 THIRD ST., SUITE 200 SAN FRANCISCO CA 94103 true false false false false Class A Common Stock 2026-06-09 4 A false 24857.00 0.00 A 118915.00 D Represents restricted stock units ("RSUs") that were granted pursuant to the Issuer's Non-Employee Director Compensation Program (the "Program"). Each RSU represents a right to receive one share of Class A Common Stock. The RSUs will vest in full on the earlier of (i) June 9, 2027 or (ii) immediately before the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's continued service on the Board through such vesting date. Includes 24,857 RSUs. /s/ Fisher, Elizabeth, as attorney in fact for Catherine Wong 2026-06-11