Unitil (UTL) CTO granted time-based and performance stock awards and units

Rhea-AI Filing Summary

Unitil Corporation CTO Justin Eisfeller reported multiple equity awards and updated holdings. On January 27, 2026, he received 1,080 shares of common stock that generally vest 25% per year over four years, and another 1,080 performance-based shares that generally vest after a three-year performance period if specified goals are met.

He was also granted 40 shares of common stock at $50 per share tied to the completed 2023–2025 performance period, bringing his directly held common stock to 18,394 shares. In addition, he holds 1,328.86 shares indirectly in a company savings and investment plan trust and 1,520 contingent derivative units linked to potential future grants after a three-year performance period ending December 31, 2028.

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

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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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Eisfeller Justin

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
01/27/2026

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	01/27/2026		A		1,080	A	$0(1)	0	D
Common stock, no par value	01/27/2026		A		1,080	A	$0(2)	0	D
Common stock, no par value	01/27/2026		A		40	A	$50(3)	18,394	D
Common stock, no par value								1,328.86	I	Held in trust(4)

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
Contingent grant of common stock	(5)	01/27/2026		A		540		(5)	(5)	Common stock	540	(5)	1,520	D

Explanation of Responses:

1. 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.

2. 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.

3. Shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan. Shares were granted at the conclusion of the 2023-2025 performance period based on the attainment of certain performance thresholds of certain performance goals. Shares were valued at current market price on date of grant. The balance of the contingent grant for such performance period terminated.

4. Shares are held in trust under the terms of the Unitil Corporation Tax Deferred Savings and Investment Plan.

5. 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.

	/s/ Thomas P. Meissner, Jr., attorney-in-fact for Justin Eisfeller	01/29/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What did Unitil (UTL) CTO Justin Eisfeller report in this Form 4?

The filing shows CTO Justin Eisfeller received several stock-based awards and updated his holdings. He reported new time-vested shares, performance-based shares, a grant tied to the 2023–2025 performance period, trust-held shares, and contingent units under Unitil’s stock plan.

How many Unitil (UTL) time-based shares were granted to the CTO?

Eisfeller was granted 1,080 time-based shares of Unitil common stock. These shares were issued under the Third Amended and Restated 2003 Stock Plan and generally vest 25% per year over four years, with each tranche valued at market price when vesting.

What performance-based Unitil (UTL) shares did the CTO receive?

He received 1,080 performance-based shares of Unitil common stock. These generally vest after a three-year performance period, depending on achieving certain performance thresholds tied to specific goals, and will be valued at the market price on the vesting date.

What is the 40-share Unitil (UTL) grant mentioned in the Form 4?

The 40-share grant reflects stock awarded after the 2023–2025 performance period. It was granted based on achieving defined performance thresholds, valued at $50 per share on the grant date, and the remaining balance of that contingent grant for the period terminated.

What indirect Unitil (UTL) holdings does the CTO report?

Eisfeller reports 1,328.86 Unitil shares held indirectly in a trust. These shares are maintained under the Unitil Corporation Tax Deferred Savings and Investment Plan, meaning they are beneficially owned through that plan rather than held directly in a standard brokerage account.

What are the contingent derivative units reported by the Unitil (UTL) CTO?

He reports 1,520 contingent derivative units related to possible future common stock grants. Up to 540 shares may be granted after a three-year performance period ending December 31, 2028, if specified performance thresholds are met, with any granted shares valued at market price on grant.