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STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C.  20549\n\nFORM 10-Q\n\n(Mark One)\n\n \n\n☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\n \n\nFor the quarterly period ended March 31, 2026\n\nOR\n\n☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\nFor the transition period from __________________ to __________________\n\n \n\nCommission File Number  001-33572\n\nBank of Marin Bancorp\n\n(Exact name of Registrant as specified in its charter)\n\nCalifornia 20-8859754\n\n(State or other jurisdiction of incorporation or organization)   (IRS Employer Identification No.)\n\n504 Redwood Blvd. Suite 100NovatoCA 94947\n\n(Address of principal executive office) (Zip Code)\n\n \n\nRegistrant’s telephone number, including area code:  (415) 763-4520\n\nNot Applicable\n\n(Former name, former address and formal fiscal year, if changed since last report)\n\nSecurities registered pursuant to 12(b) of the Act:\n\nTitle of each classTrading symbolName of each exchange on which registered\n\nCommon stock, no par valueBMRCThe Nasdaq Stock Market\n\nIndicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.\n\nYes ☒                  No  ☐\n\n \n\nIndicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).\n\nYes ☒                  No ☐\n\n \n\nIndicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and \"emerging growth company\" in Rule 12b-2 of the Exchange Act.   \n\nLarge accelerated filer ☐Accelerated filer☒\n\nNon-accelerated filer ☐Smaller reporting company ☐\n\nEmerging growth company ☐\n\n \n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐\n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).\n\nYes   ☐    No  ☒ \n\nAs of April 30, 2026, there were 16,189,707 shares of common stock outstanding.\n\nTABLE OF CONTENTS\n\n \n\nPART I\n[FINANCIAL INFORMATION](#i3490f657798f4769858b1c9daa793e1e_10)\n\n[3](#i3490f657798f4769858b1c9daa793e1e_10)"}