{"url_path":"/sec/tcbk/8-k/2026-07-15/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-07-15","source_url":"https://www.sec.gov/Archives/edgar/data/356171/0001104659-26-083891-index.html","accession_number":"0001104659-26-083891","cik":"0000356171","ticker":"TCBK","issuer_name":"TRICO BANCSHARES /","edgar_url":"https://www.sec.gov/Archives/edgar/data/356171/0001104659-26-083891-index.html","primary_entity_key":"0000356171","primary_entity_name":"TRICO BANCSHARES /"},"word_count":311,"has_tables":true,"body_markdown":"false\n0000356171\n\n0000356171\n\n2026-07-12\n2026-07-12\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549**\n\n** **\n\n \n\n** **\n\n**FORM 8-K**\n\n** **\n\n \n\n \n\n**CURRENT REPORT**\n\n**PURSUANT TO SECTION 13 OR 15(d)**\n\n**OF THE SECURITIES EXCHANGE ACT OF 1934**\n\n** **\n\n**Date of Report (Date of earliest event reported): July 15, 2026 (July 12, 2026)**\n\n** **\n\n \n\n \n\n**TriCo Bancshares**\n\n**(Exact Name of Registrant as Specified in Its\nCharter)**\n\n** **\n\n \n\n \n\n**California**\n\n**(State or Other Jurisdiction of Incorporation)**\n\n \n\n**000-10661**\n \n**94-2792841**\n\n**(Commission File Number)**\n \n**(IRS Employer Identification No.)**\n\n \n\n**63 Constitution Drive**\n\n**Chico, California**\n\n \n**95973**\n\n**(Address of Principal Executive Offices)**\n \n**(Zip Code)**\n\n \n\n**(530) 898-0300**\n\n**(Registrant’s Telephone Number, including\nArea Code)**\n\n** **\n\n**Not Applicable**\n\n**(Former Name or Former Address, if Changed Since\nLast Report)**\n\n** **\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K\nfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n \nx\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n \n¨\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n \n¨\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n \n¨\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\n**Title of each class:**\n \n**Trading Symbol**\n \n**Name of each exchange on which registered:**\n\nCommon Stock, no par value\n \nTCBK\n \nThe Nasdaq Stock Market LLC\n\n \n\nIndicate by check mark whether the registrant is an emerging growth\ncompany as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange\nAct of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth company ¨\n\n \n\nIf an emerging growth company, indicate\nby check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial\naccounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨"}