Carleton B. Simpson - 27 Jan 2026 Form 4 Insider Report for UNITIL CORP (UTL)

Role: SVP, Gen. Counsel & Secretary
Signature: /s/ Kumiko A. Shortill, attorney-in-fact for Carleton B. Simpson
Issuer symbol: UTL
Transactions as of: 27 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 29 Jan 2026, 16:55:43 UTC
Previous filing: 05 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Simpson Carleton B	SVP, Gen. Counsel & Secretary	6 LIBERTY LANE WEST, HAMPTON	/s/ Kumiko A. Shortill, attorney-in-fact for Carleton B. Simpson	29 Jan 2026	0002091692

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	UTL	Common stock, no par value	Award	$0	+1,590		$0.000000	0	27 Jan 2026	Direct	F1
transaction	UTL	Common stock, no par value	Award	$0	+1,590	+45%	$0.000000	5,100	27 Jan 2026	Direct	F2

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
transaction	UTL	Contingent grant of common stock	Award		+795	+166%		1,275	27 Jan 2026	Common stock	795		Direct	F3

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

Explanation of Responses:

Id	Content
F1	Shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan. Shares generally will vest 25% per year over four years from date of grant. Shares will be valued at current market price on date of vesting.
F2	Shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan. Shares generally will vest after three-year performance period based on the attainment of certain performance thresholds of certain performance goals. Shares will be valued at current market price on date of vesting.
F3	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, 2028, 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.