[Form 4] UNITIL CORP Insider Trading Activity

Rhea-AI Filing Summary

Mark H. Collin, a director of Unitil Corp (UTL), received 2,435 shares of the company's common stock on 10/01/2025 as the stock portion of his annual director retainer under the Third Amended and Restated 2003 Stock Plan. The transaction was reported on Form 4 and recorded at a price of $47.22 per share. Following the grant, the filing shows beneficial ownership of 58,837.16 shares. The Form 4 was signed by an attorney-in-fact on behalf of Mr. Collin on 10/03/2025. The filing discloses a routine director compensation share grant and does not list any derivative transactions.

Positive

• 2,435 shares granted to a director as part of his annual retainer
• Grant was processed under the Third Amended and Restated 2003 Stock Plan
• Transaction reported promptly via Form 4 with signed disclosure

Negative

• None.

Insights

Corporate Governance Analyst

Director received equity retainer aligning interests with shareholders.

The Form 4 shows a 2,435-share grant under the company stock plan as the stock portion of the annual director retainer. This is a standard mechanism to compensate directors and align their incentives with long-term shareholder value.

The transaction is reported as a direct acquisition at an execution price of $47.22 and results in listed beneficial ownership of 58,837.16 shares; no derivatives were reported.

Insider Transactions Specialist

Filing documents a routine, non-sale acquisition by a director.

The Form 4 discloses an acquisition (code A(1)) on 10/01/2025 and was timely signed on 10/03/2025. The report includes the grant explanation and shows the transaction was processed under the company stock plan.

No disposals, option exercises, or other derivative activity are reported, indicating this was solely a compensation-related issuance.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

COLLIN MARK H

(Last) (First) (Middle)

6 LIBERTY LANE WEST

(Street)

HAMPTON NH 03842

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
UNITIL CORP [ UTL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock, no par value	10/01/2025		A(1)		2,435	A	$47.22	58,837.16	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan and transferred into my name in connection with the stock portion of my annual retainer fee as a Director of the Company.

	/s/ Sandra L. Whitney, attorney-in-fact for Mark H. Collin	10/03/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Unitil director Mark H. Collin report on Form 4 (UTL)?

The Form 4 reports that Mark H. Collin acquired 2,435 shares on 10/01/2025 as the stock portion of his annual director retainer.

At what price were the Unitil (UTL) shares reported on the Form 4?

The shares were reported at a price of $47.22 per share.

How many Unitil shares does Mark H. Collin beneficially own after the transaction?

The filing shows beneficial ownership of 58,837.16 shares following the reported transaction.

Under what plan were the shares granted to the Unitil director?

The shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan.

Were any derivative securities reported by the director in this Form 4?

No. The Form 4 lists only a non-derivative acquisition of common stock and does not disclose any derivative securities.