First Bancorp, Inc /ME/

Exhibit 3.1 Conformed Copy of the Registrant's Articles of Incorporation (incorporated by reference to Exhibit 3.1 to the

Company's Form 8-K filed under item 5.03 on October 7, 2004).

Exhibit 3.2 Amendment to the Registrant's Articles of Incorporation (incorporated by reference to Exhibit 3.1 to the Company's Form 8-K filed on May 1, 2008).

Exhibit 3.3 Amendment to the Registrant's Articles of Incorporation (incorporated by reference to the Definitive Proxy Statement for the Company's 2008 Annual Meeting filed on March 14, 2008).

Exhibit 3.4 Amendment to the Registrant's Articles of Incorporation authorizing issuance of preferred stock (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on December 29, 2008).

Exhibit 3.5 Conformed Copy of the Company's Bylaws (incorporated by reference to Exhibit 3.5 to the Company's Form 10-K filed March 10, 2017).

Exhibit 3.6 Amendment to the Company Bylaws (incorporated by reference to Exhibit 3.6 to the Company's Form 8-K filed under item 5.03 on December 20, 2019).

Exhibit 3.7 Amendment to the Company Bylaws (incorporated by reference to Exhibit 3.7 to the Company's Form 8-K/A filed under item 5.03 on May 18, 2026).

Exhibit 3.8 Conformed Copy of the Company's Bylaws, furnished within.

Exhibit 23.1 Consent of Independent Registered Public Accounting Firm (incorporated by reference to Exhibit 2.3 to the Company's Form 10-K filed March 6, 2026).

Exhibit 31.1 Certification of Chief Executive Officer Pursuant to Rule 13A-14(A) of The Securities Exchange Act of 1934, furnished within.

Exhibit 31.2 Certification of Chief Financial Officer Pursuant to Rule 13A-14(A) of The Securities Exchange Act of 1934, furnished within.

Exhibit 32.1 Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, furnished within.

Exhibit 32.2 Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, furnished within.

Exhibit 101.INS XBRL Instance Document

Exhibit 101.SCH XBRL Taxonomy Extension Schema Document

Exhibit 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document

Exhibit 101.LAB XBRL Taxonomy Extension Label Linkbase Document

Exhibit 101.PRE XBRL Taxonomy Extension Presentation Linkbase Document

Exhibit 101.DEF XBRL Taxonomy Extension Definitions Linkbase

Exhibit 104.Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)