X0508 4 2025-06-12 true 0001866692 Amplitude, Inc. AMPL 0001617474 Vishria Eric C/O BENCHMARK 2965 WOODSIDE ROAD WOODSIDE CA 94062 true false false false false Class A Common Stock 2025-06-12 4 A false 14906.00 0.00 A 64712.00 D Class A Common Stock 329621.00 I See footnote 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 12, 2026 or (ii) immediately before the Issuer's 2026 annual meeting of stockholders, subject to the reporting person's continued service on the Board through such vesting date. Includes 14,906 RSUs. Shares are held by entities controlled by the reporting person. /s/ An-Yen Hu, by power of attorney for Eric Vishria 2025-06-16