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 Quarterly Report of Unitil Corporation (the "Company") on Form 10-Q for the period ending March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned Thomas P. Meissner, Jr., Chief Executive Officer, Daniel J. Hurstak, Chief Financial Officer and Todd R. Diggins, Chief Accounting Officer, certifies, to the best knowledge and belief of the signatory, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that:
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/s/ Thomas P. Meissner, Jr |
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Thomas P. Meissner, Jr. |
| Chief Executive Officer |
| May 7, 2024 |
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/s/ Daniel J. Hurstak |
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Daniel J. Hurstak |
| Chief Financial Officer |
| May 7, 2024 |
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/s/ Todd R. Diggins |
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Todd R. Diggins |
| Chief Accounting Officer |
| May 7, 2024 |