Form 4 Filing for Amplitude, Inc. - Officer Stock Acquisition

This Form 4 filing details a transaction by Andrew Casey, Chief Financial Officer of Amplitude, Inc. On April 15, 2026, Casey acquired 431,754 shares of Class A Common Stock through the vesting of restricted stock units (RSUs) at a price of $0.00 per share. These RSUs vest in twelve equal quarterly installments starting May 15, 2026, contingent upon continued service. Following this transaction, Casey holds a total of 1,498,524 shares, which includes 1,101,159 unvested RSUs. The filing was signed on April 17, 2026, by Elizabeth Fisher as attorney in fact for Andrew Casey. This transaction is classified as an officer stock acquisition.