X0306 4/A 2018-12-14 2018-12-17 0 0000356171 TRICO BANCSHARES / TCBK 0001458681 WALKER W VIRGINIA 63 CONSTITUTION DRIVE CHICO CA 95973 1 0 0 0 Common Stock 2018-12-14 4 S 0 3443 35.48 D 7078 D This transaction was executed in multiple trades at a price ranging from $35.57 to $35.55. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This amendment does not report any additional transactions - it is being filed to correct the relationship of the Reporting Person(s) to the Issuer /s/ Virginia Walker By Jason Cove Attorney-In-Fact 2018-12-19