Carleton B. Simpson - 29 Oct 2025 Form 3 Insider Report for UNITIL CORP (UTL)

Role: SVP and General Counsel
Signature: /s/ Kumiko A. Shortill, attorney-in-fact for Carleton B. Simpson
Issuer symbol: UTL
Transactions as of: 29 Oct 2025
Net transactions value: $0
Form type: 3
Filing time: 05 Nov 2025, 14:48:24 UTC
Next filing: 29 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Simpson Carleton B	SVP and General Counsel	6 LIBERTY LANE WEST, HAMPTON	/s/ Kumiko A. Shortill, attorney-in-fact for Carleton B. Simpson	05 Nov 2025	0002091692

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	UTL	Common stock, no par value						1,920	29 Oct 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	UTL	Contingent grant of common stock							29 Oct 2025	Common stock	480	$0.000000	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares may be granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan. Any such shares would be granted after a three-year performance period ending on December 31, 2027, based on the attainment of certain performance thresholds of certain performance goals. Any such shares would be valued at current market price on date of grant.