Unitil Corp 8-K, filed Dec 18, 2025
Unitil Corp (UTL)
About this 8-K
Unitil Corp filed this 8-K on December 18, 2025, reporting on events of December 15, 2025.
Items reported
- Item 7.01: Regulation FD disclosure
- Item 8.01: Other events
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Item 7.01 Regulation FD Disclosure
On December 15, 2025, Sandra L. Whitney, Corporate Secretary of Unitil Corporation (the “Company”), provided notice that she will retire and, in connection with her retirement, resign from the Company and each of its subsidiaries, effective as of the end of the day on December 31, 2025.
As part of the Company’s ongoing succession plan, the Company will appoint Carleton B. Simpson as Corporate Secretary of the Company, effective as of January 1, 2026. Mr. Simpson is currently Senior Vice President and General Counsel of the Company. He will continue in that role in addition to becoming the Corporate Secretary of the Company.
The Company anticipates that Ms. Whitney will provide consulting services to the Company until April 30, 2026, to help with the transition of duties.
Item 8.01 Other Events
The first two paragraphs of Item 7.01 are incorporated by reference into this Item 8.01.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| UNITIL CORPORATION | ||
| By: | /s/ Daniel J. Hurstak | |
| Name: Daniel J. Hurstak | ||
| Title: Senior Vice President, Chief Financial Officer and Treasurer | ||
Date: December 18, 2025