☒Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2025☐Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934For the transition period from__________________ to __________________Commission File Number: 000-39209 ChoiceOne Financial Services, Inc.(Exact Name of Registrant as Specified in its Charter) (I.R.S. Employer Identification No.) Securities registered pursuant to Section 12(g) of the Act: None. Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes☐No☒ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes☐No☒ Indicate 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 1934during 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 filingrequirements for the past 90 days. Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 ofRegulation 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).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or anemerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growthcompany” in Rule 12b-2 of the Exchange Act. Large accelerated filer☐Non-accelerated filer☐Emerging growth company☐ Smaller reporting company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any newor revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internalcontrol over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that preparedor issued its audit report.☒ If securities are registered pursuant to section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in thefiling reflect the correction of an error to previously issued financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation receivedby any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes☐No☒ As of June 30, 2025, the aggregate market value of common stock held by non-affiliates of the Registrant was $402.4 million. This amount is based on anaverage bid price of $28.70 per share for the Registrant's stock as of such date. As of February 28, 2026, the Registrant had 14,981,917 shares of common stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive Proxy Statement of ChoiceOne Financial Services, Inc. for the Annual Meeting of Shareholders to be held on May 20, 2026, areincorporated by reference into Part III of this Form 10-K. PART 1Item 1:BusinessItem 1A:Risk FactorsItem 1B:Unresolved Staff CommentsItem 1C:CybersecurityItem 2:PropertiesItem 3:Legal ProceedingsItem 4:Mine Safety Disclosures 3101616171717 PART IIItem 5:Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities18Item 6:Reserved18Item 7:Management’s Discussion and Analysis of Financial Condition and Results of Operations19Item 7A:Quantitative and Qualitative Disclosures About Market Risk36Item 8:Financial Statements and Supplementary Data37Item 9:Changes in and Disagreements With Accountants on Accounting and Financial Disclosure93Item 9A:Controls and Procedures93Item 9B:Other Information93Item 9C:Disclosure Regarding Foreign Jurisdictions that Prevent Inspections93 Item 10:Directors, Executive Officers and Corporate Governance94Item 11:Executive Compensation94Item 12:Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters94Item 13:Certain Relationships and Related Transactions, and Director Independence95Item 14:Principal Accountant Fees and Services95 PART IVItem 15:Exhibits and Financial Statement Schedules 96 SIGNATURES98 FORWARD-LOOKING STATEMENTS This report and the documents incorporated into this report contain forward-looking statements that are based on