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
In connection with the Annual Report on Form 10-K of Cambridge Bancorp (the “Company”) for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge on the date hereof:
| (1) | The Form 10-K Report fully complies with the requirements of section 13(a) or 15(d) as applicable, of the Securities Exchange Act of 1934, as amended; and |
| (2) | The information contained in the Form 10-K Report fairly presents, in all material respects, the financial condition and results of operations of the Company. |
March 16, 2020 | By: | /s/ Denis K. Sheahan |
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| Denis K. Sheahan |
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| Chairman, Chief Executive Officer (Principal Executive Officer) |