Amplitude, Inc.

AMPL·NASDAQ·$6.84Share Price as of 11/2·$909MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202502/19/26 10-QQ3 ended 09/30/2511/06/25 10-QQ2 ended 06/30/2508/07/25

Disclosures

8-KCurrent report10/15/26 8-KCurrent report08/05/26 8-KCurrent report06/10/26 8-KCurrent report05/06/26 8-KCurrent report02/24/26

Prospectuses and Registrations

S-8Registration of securities for employees02/19/26 S-8Registration of securities for employees02/20/25 S-8Registration of securities for employees02/20/24 S-8Registration of securities for employees02/16/23 S-8Registration of securities for employees02/17/22

Proxies

DEF 14ADefinitive proxy04/24/26 DEFA14AAdditional proxy materials04/24/26 DEF 14ADefinitive proxy04/25/25 DEFA14AAdditional proxy materials04/25/25 DEF 14ADefinitive proxy04/29/24

Ownership

144Proposed sale of securities10/28/26 Form 4Insider transaction10/28/26 Form 4Insider transaction10/27/26 144Proposed sale of securities10/26/26 144Proposed sale of securities10/23/26

Other

ARSAnnual report to shareholders04/24/26 ARSAnnual report to shareholders04/25/25 ARSAnnual report to shareholders04/29/24 ARSAnnual report to shareholders04/27/23 EFFECTRequest for effectiveness12/21/21