X0306 4 2020-06-10 1 0000356171 TRICO BANCSHARES / TCBK 0001458681 WALKER W VIRGINIA 63 CONSTITUTION DRIVE CHICO CA 95973 1 0 0 0 Common Stock 2020-06-10 4 S 0 2000 31.4598 D 9320 D This transaction was executed in multiple trades at a price ranging from $31.40 to $31.535. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or the security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Virginia Walker by Jason Cove, Attorney-In-Fact 2020-06-12