Form 4 Filing for Amplitude, Inc. - Officer and Director Transaction

This filing details a transaction by Curtis Liu, Chief Technology Officer, Director, and 10% owner of Amplitude, Inc. On April 15, 2026, Mr. Liu acquired 417,827 shares of Class A Common Stock through the vesting of Restricted Stock Units (RSUs) with a transaction price of $0.00 per share. These RSUs vest in quarterly installments starting May 15, 2026. Following this transaction, Mr. Liu beneficially owns 1,084,845 shares. The filing also corrects previous filings, stating that the beneficial ownership was understated by 63,262 shares in filings dated March 9 and 10, 2026.