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

Reporting relationship: SVP, Gen. Counsel & Secretary
Issuer ticker: UTL
Reported as of: 27 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 29 Jan 2026, 16:55:43 UTC
Prior SEC filing: 05 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Kumiko A. Shortill, attorney-in-fact for Carleton B. Simpson

Key filing fact

Carleton B. Simpson filed Form 4 for UNITIL CORP (UTL) on 29 Jan 2026.

Key facts

This page summarizes Carleton B. Simpson's Form 4 filing for UNITIL CORP (UTL).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 29 Jan 2026, 16:55.

Change

Previous filing in this sequence was filed on 05 Nov 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002091692 Primary reporting owner

Simpson Carleton B

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

UTL transaction

Common stock, no par value

Award

Transaction value: $0
Shares: +1,590
Change %
Price: $0.000000
Shares after: 0
Date: 27 Jan 2026
Ownership: Direct
Footnotes: F1

UTL transaction

Common stock, no par value

Award

Transaction value: $0
Shares: +1,590
Change %: +45%
Price: $0.000000
Shares after: 5,100
Date: 27 Jan 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

UTL transaction Derivative

Contingent grant of common stock

Award

Transaction value
Shares: +795
Change %: +166%
Price
Shares after: 1,275
Date: 27 Jan 2026
Ownership: Direct
Underlying class: Common stock
Underlying amount: 795
Exercise price
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote 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.

Footnote 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.