Michael B. Green - 01 Oct 2025 Form 4 Insider Report for UNITIL CORP (UTL)

Role: Director
Signature: /s/ Sandra L. Whitney, attorney-in-fact for Michael B. Green
Issuer symbol: UTL
Transactions as of: 01 Oct 2025
Net transactions value: +$114,981
Form type: 4
Filing time: 03 Oct 2025, 11:47:30 UTC
Previous filing: 03 Oct 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GREEN MICHAEL B	Director	6 LIBERTY LANE WEST, HAMPTON	/s/ Sandra L. Whitney, attorney-in-fact for Michael B. Green	03 Oct 2025	0001253399

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	UTL	Common stock, no par value						5,530	01 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
transaction	UTL	Restricted stock units	Award	$114,981	+2,435	+13%	$47.22	21,357	01 Oct 2025	Common stock	2,435		Direct	F1

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit is equivalent in value to one share of Unitil Corporation's common stock, no par value ("Common Stock"), and represents the right to receive a combination of cash and Common Stock after separation from service on Unitil Corporation's Board of Directors. Each restricted stock unit is fully vested upon grant and is payable 70% in Common Stock and 30% in cash, based upon the closing price of Common Stock on the day prior to settlement.

Content

Each restricted stock unit is equivalent in value to one share of Unitil Corporation's common stock, no par value ("Common Stock"), and represents the right to receive a combination of cash and Common Stock after separation from service on Unitil Corporation's Board of Directors. Each restricted stock unit is fully vested upon grant and is payable 70% in Common Stock and 30% in cash, based upon the closing price of Common Stock on the day prior to settlement.