EX-32.1 4 bhb-20250630xex32d1.htm EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

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In connection with the Quarterly Report on Form 10-Q of Bar Harbor Bankshares (the “Registrant”) for the quarterly period ended June 30, 2025 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Curtis C. Simard, President and Chief Executive Officer of the Registrant, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

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Date: August 6, 2025 | ​ | /s/ Curtis C. Simard
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​ | Name: | Curtis C. Simard
​ | Title: | President and Chief Executive Officer

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