X0609 4 2026-06-19 0 0000356171 TRICO BANCSHARES / TCBK 0001569815 Giese Cory W false 63 CONSTITUTION DRIVE CHICO CA 95973 1 0 0 0 0 Common Stock 47000 I Family LLC-spouse limited partner Reporting shares- no transaction. Shares owned by an LLC for the benefit of certain family members of the Reporting Persons spouse where spouse is a 16 percent limited partner of an LLC. The Reporting Person disclaims beneficial ownership of these shares and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the securities reported for the purposes of Section16 or any other person. /s/Cory Giese by Janine Howard, Attorney-in-Fact 2026-08-28