[Form 4] UNITIL CORP Insider Trading Activity

Rhea-AI Filing Summary

Unitil Corporation director Suzanne Foster received 2,435 shares of Unitil common stock as the stock portion of her annual director retainer, with the transaction reported as having occurred on 10/01/2025. The reported per-share price for the award was $47.22, and following the transfer Ms. Foster beneficially owned 12,134 shares. The grant was made under the Unitil Corporation Third Amended and Restated 2003 Stock Plan and the Form 4 was signed on behalf of Ms. Foster by an attorney-in-fact.

Positive

• 2,435 shares granted to a director as part of compensation
• Grant came under the Third Amended and Restated 2003 Stock Plan, indicating plan-based governance
• Beneficial ownership increased to 12,134 shares, aligning director compensation with shareholder interests

Negative

• None.

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

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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^*

Foster Suzanne

(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	12,134	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 Suzanne Foster	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 (UTL) disclose in this Form 4?

The Form 4 reports that director Suzanne Foster was granted and received 2,435 shares as the stock portion of her annual retainer.

How many Unitil shares does Suzanne Foster own after the transaction (UTL)?

Following the reported transaction Ms. Foster beneficially owned 12,134 shares.

What was the reported price per share for the grant on the Form 4?

The transaction lists a per-share price of $47.22.

Under what plan were the Unitil shares issued?

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

Who signed the Form 4 for Suzanne Foster (UTL)?

The Form 4 was signed by Sandra L. Whitney, attorney-in-fact for Suzanne Foster.