Westamerica Bancorporation

WABC·NASDAQ·$56.02Share Price as of 11/2·$1BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/08/26 10-KFY 202502/27/26 10-QQ3 ended 09/30/2511/07/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report10/22/26 8-KCurrent report10/15/26 8-KCurrent report07/23/26 8-KCurrent report07/16/26 8-KCurrent report04/27/26

Prospectuses and Registrations

S-8Registration of securities for employees08/06/25 S-8Registration of securities for employees09/27/19 S-8 POSPost-effective amendment (S-8)09/27/19 S-8Registration of securities for employees06/29/12 S-8 POSPost-effective amendment (S-8)06/29/12

Proxies

DEF 14ADefinitive proxy03/13/26 DEFA14AAdditional proxy materials03/13/26 DEF 14ADefinitive proxy03/14/25 DEFA14AAdditional proxy materials03/14/25 DEF 14ADefinitive proxy03/15/24

Ownership

144Proposed sale of securities10/23/26 Form 4Insider transaction10/23/26 SC 13G/ABeneficial ownership (amended)08/14/26 SC 13GBeneficial ownership08/07/26 144Proposed sale of securities07/24/26

Other

11-KEmployee stock purchase plan report06/26/26 ARSAnnual report to shareholders03/13/26 11-KEmployee stock purchase plan report06/27/25 ARSAnnual report to shareholders03/14/25 11-KEmployee stock purchase plan report06/28/24