UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): ~~January 27~~February 19, 2026

UNITIL CORPORATION

(Exact name of registrant as specified in its charter)

New Hampshire	1-8858	02-0381573
(State or other jurisdiction	(Commission	(IRS Employer
(State or other jurisdictionof incorporation)	(CommissionFile Number)	(IRS EmployerIdentification No.)
of incorporation)	File Number)	Identification No.)


6 Liberty Lane West, Hampton, New Hampshire		03842-1720
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (603) 772-0775

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class TradingSymbol Name of each ~~exchange~~exchangeon of which registered Common Stock, no par value UTL New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement

~~The~~Distribution ~~disclosure~~Agreement ~~required by this item is included in Item 5.02 and is incorporated herein by reference.~~

~~Item~~As ~~5.02~~previously ~~Departure~~reported, ofon ~~Directors~~June 3, 2025, Unitil Corporation, a New Hampshire corporation (the “Company”), entered into a Distribution Agreement (the “Distribution Agreement”) with Janney Montgomery Scott LLC and Scotia Capital (USA) Inc., as agents and/or ~~Certain~~forward ~~Officers;~~sellers, ~~Election~~and Janney Montgomery Scott LLC and The Bank of ~~Directors;~~Nova ~~Appointment~~Scotia, as forward purchasers, pursuant to which the Company may sell, from time to time, up to an aggregate sales price of ~~Certain~~$50 million ~~Officers;~~of ~~Compensatory~~its ~~Arrangements~~common stock, no par value (the “Shares”). The Company summarized the material terms and conditions of ~~Certain~~the ~~Officers~~Distribution Agreement in a Current Report on Form 8-K dated June 3, 2025.

~~Revised~~On ~~Equity~~February 19, ~~Compensation~~2026, ~~Practices~~(i) the Company and Janney Montgomery Scott LLC mutually terminated the Distribution Agreement with respect to Janney Montgomery Scott LLC, in its capacity as an agent and/or forward seller and as a forward purchaser thereunder and (ii) the Company entered into Amendment No. 1 to Distribution Agreement (the “Amendment to Distribution Agreement”) with Huntington Securities, Inc. and Scotia Capital (USA) Inc., as agents and/or forward sellers, and Huntington Securities, Inc. and The Bank of Nova Scotia, as forward purchasers. The Amendment to Distribution Agreement amended the Distribution Agreement to replace Janney Montgomery Scott LLC, in its capacities as an agent and/or forward seller and as a forward purchaser, with Huntington Securities, Inc.

OnThe ~~January 24,~~offer ~~2023,~~and ~~the~~sales ~~Compensation~~of ~~Committee (~~the ~~“Compensation~~Shares, ~~Committee”)~~if ofany, ~~the~~made ~~Board~~pursuant ofto ~~Directors~~the ofDistribution ~~Unitil~~Agreement ~~Corporation~~ (~~the~~as ~~“Company”~~amended), ~~approved~~will ~~and~~be ~~adopted~~made ~~amendments~~under to the Company’s ~~practices~~Registration ~~relating~~Statement toon ~~the~~Form ~~grant~~S-3ASR, towhich was previously filed with the ~~Company’s~~Securities ~~executive~~and ~~officers~~Exchange Commission and ~~other~~became ~~senior~~automatically ~~management~~effective ~~participants~~on ~~(collectively~~June 3, ~~“Participants”)~~2025, ofas ~~restricted~~supplemented ~~stock~~by ~~awards~~a ~~(the~~prospectus ~~“Prior~~supplement, ~~Equity~~dated ~~Compensation~~June 3, ~~Practices”)~~2025 and a prospectus supplement no. 1, dated February 19, 2026.

OnNeither ~~January 27~~the Company nor any of its controlled affiliates has any material relationship with Huntington Securities, ~~2026~~Inc., ~~the~~Scotia ~~Compensation~~Capital ~~Committee~~(USA) ~~approved~~Inc., ~~and~~or ~~adopted~~The ~~further~~Bank ~~amendments~~of Nova Scotia, other than with respect to (i) the Distribution Agreement, as amended, (ii) the debt commitment letter dated May 6, 2025 between the Company’s ~~practices~~and The Bank of Nova Scotia relating to the ~~grant~~acquisition toof ~~Participants~~Aquarion Water Company of ~~restricted~~Massachusetts, ~~stock~~Inc., ~~awards~~Aquarion Water Company of New Hampshire, Inc., and Abenaki Water Co., Inc., (iii) advice provided by The Bank of Nova Scotia or its affiliates in connection with the ~~“Revised~~acquisition ~~Equity~~of ~~Compensation~~Aquarion ~~Practices”)~~Water Company of Massachusetts, Inc., ~~The~~Aquarion ~~Revised~~Water ~~Equity~~Company ~~Compensation~~of ~~Practices~~New ~~are~~Hampshire, ~~substantially~~Inc., and Abenaki Water Co., Inc., (iv) the ~~same~~Credit Agreement dated as of October 31, 2025 among the ~~Prior~~Company, ~~Equity~~The ~~Compensation~~Bank ~~Practices~~of Nova Scotia, ~~except~~as a lender, and The Bank of Nova Scotia, as administrative agent, relating to the acquisition of Maine Natural Gas Corporation, (v) advice provided by The Bank of Nova Scotia or its affiliates in connection with ~~respect~~the acquisition of Maine Natural Gas Corporation, (vi) the debt commitment letter dated July 8, 2024 between the Company and The Bank of Nova Scotia relating to ~~dividends~~the onacquisition ~~restricted~~of ~~stock~~Bangor ~~awards~~Natural Gas Company, (asvii) advice ~~described~~provided ~~below~~by The Bank of Nova Scotia or its affiliates in connection with the acquisition of Bangor Natural Gas Company, and (viii) other customary banking and investment banking relationships.

The ~~Revised~~foregoing ~~Equity~~description ~~Compensation~~of ~~Practices~~the ~~include:~~material terms of the Amendment to Distribution Agreement does not purport to be complete and is subject to, and qualified in its entirety by, the full text of the Amendment to Distribution Agreement. A copy of the Amendment to Distribution Agreement is filed as Exhibit 10.1 hereto.

~~(i) a~~The ~~revised~~Amendment ~~form~~to Distribution Agreement has been included to provide investors with information regarding its terms. The Amendment to Distribution Agreement is not intended to provide any factual information about the Company or any of ~~restrictive~~its ~~stock~~subsidiaries. ~~agreement~~The ~~relating~~representations, warranties and covenants contained in the Amendment to ~~awards~~Distribution Agreement were, are or will be made only for purposes of ~~restricted~~the ~~shares~~Amendment to Distribution Agreement and as of specific dates, are solely for the ~~Company’s~~benefit ~~common~~of ~~stock~~the ~~that~~parties ~~vest~~to ~~over~~the ~~time~~Amendment ~~(“Time~~to ~~Restricted~~Distribution ~~Shares”);~~Agreement, and are subject to limitations, modifications, qualifications, or exceptions agreed upon by the parties to the Amendment to Distribution Agreement. Moreover, the representations and warranties contained in the Amendment to Distribution Agreement generally were,

~~(iii) a~~ are ~~form~~or will be made for the purpose of ~~restricted~~allocating ~~stock~~contractual ~~agreement~~risk ~~relating~~among the parties to ~~awards~~the Amendment to Distribution Agreement instead of ~~restricted~~establishing ~~shares~~matters as facts, and may be subject to standards of materiality applicable to the ~~Company’s~~parties ~~common~~to ~~stock~~the Amendment to Distribution Agreement that ~~vest~~differ ~~based~~from those applicable to investors. Investors are not third-party beneficiaries under the Amendment to Distribution Agreement and should not rely on the ~~satisfaction~~representations, warranties and covenants contained therein or any descriptions thereof as characterizations of ~~certain~~the ~~performance~~actual ~~metrics~~state ~~(“Performance~~of ~~Restricted~~facts ~~Shares”)~~or condition of the Company or its subsidiaries or any of their respective subsidiaries or affiliates. Additionally, information concerning the subject matter of the representations and warranties contained in the Amendment to Distribution Agreement may change after the date of the Amendment to Distribution Agreement, which subsequent information may or may not be fully reflected in the Company’s public disclosures.

~~Under~~This ~~the~~Current ~~Revised~~Report ~~Equity~~on ~~Compensation~~Form ~~Practices,~~8-K inshall ~~general,~~not ~~the~~constitute ~~Company will grant to its Participants, on~~ an ~~annual~~offer ~~basis, (i) Time Restricted Shares and (ii) Performance Restricted Shares. Participants will continue~~ to besell ~~selected~~or by the ~~Compensation~~solicitation ~~Committee. The number~~ of ~~each~~any ~~Participant’s~~offer ~~Time~~to ~~Restricted~~buy ~~Shares~~the ~~and Performance Restricted~~ Shares, innor ~~the~~shall ~~aggregate~~there ~~(the~~be ~~“Total~~an ~~Number”)~~offer, issolicitation ~~based~~or ~~upon~~sale ~~(A) (i) the midpoint~~ of the ~~Participant’s~~Shares ~~salary~~in ~~range~~any ~~multiplied~~state byin ~~(ii) the~~which ~~Participant’s~~such ~~multiplier~~offer, ~~minus~~solicitation ~~(B) anticipated~~or ~~Federal~~sale ~~and~~would ~~Medicare~~be ~~taxes~~unlawful onprior ~~the~~to ~~Participant’s~~registration ~~award.~~or ~~The~~qualification ~~number~~under ~~of each of~~ the ~~Time~~securities ~~Restricted~~laws ~~Shares and the Performance Restricted Shares is 50%~~ of ~~the~~such ~~Total Number~~state.

~~The~~Amendment ~~following~~to ~~table~~Purchase ~~summarizes~~Agreement ~~the current multiplier for each Participant that is the Chief Executive Officer, the Chief Financial Officer or a named executive officer of the Company.~~

Name	Principal Position	Multiplier
Thomas P. Meissner, Jr.	Chairman of the Board & Chief Executive Officer	135%
Robert B. Hevert	President & Chief Administrative Officer	90%
Daniel J. Hurstak	Senior Vice President, Chief Financial Officer & Treasurer	70%
Justin Eisfeller	Vice President & Chief Transformation Officer	45%
Christopher J. Leblanc	Senior Vice President, Gas Operations	45%

As previously reported, on May 6, 2025, the Company entered into a Purchase and Sale Agreement (the “Purchase Agreement”) by and between the Company and Aquarion Water Authority, a public corporation and political subdivision of the state of Connecticut (“Seller”), and, solely with respect to Section 9.25 and Section 9.26 thereof, South Central Connecticut Regional Water Authority (“RWA”). Pursuant to the Purchase Agreement, the Company agreed to acquire all of the issued and outstanding shares of common stock of Aquarion Water Company of Massachusetts, Inc., Aquarion Water Company of New Hampshire, Inc., and Abenaki Water Co., Inc. from Seller. The Company summarized the material terms and conditions of the Purchase Agreement in a Current Report on Form 8-K dated May 6, 2025.

~~Time~~As ~~Restricted~~previously ~~Shares~~disclosed, on January 23, 2026, the Company entered into an Amendment No. 1 to Purchase and Sale Agreement (“Amendment No. 1”) by and between the Company, Seller and RWA. Amendment No. 1, among other things, amended the definition of “Termination Date” in Section 8.1(d) of the Purchase Agreement by replacing the reference to “January 23, 2026” with “February 23, 2026”. Except as specifically modified and amended by Amendment No. 1, the Purchase Agreement remained unchanged. The Company summarized the material terms and conditions of Amendment No. 1 in a Current Report on Form 8-K dated January 23, 2026.

~~Time~~On ~~Restricted~~February 23, ~~Shares~~2026, ~~generally~~the ~~vest~~Company ~~over~~entered ainto ~~period~~an ofAmendment ~~four~~No. 2 ~~years~~to atPurchase aand ~~rate~~Sale ofAgreement ~~25%~~(“Amendment ~~each year~~No. 2”) ~~Prior~~by toand ~~the~~between ~~end of~~ the ~~vesting period~~Company, ~~Time~~Seller ~~Restricted~~and ~~Shares~~RWA. ~~are~~Amendment ~~subject~~No. 2, toamong ~~forfeiture if the Participant ceases to be employed by the Company~~ other ~~than~~things, ~~due~~further toamended the ~~Participant’s~~definition ~~death,~~of ~~disability~~“Termination orDate” ~~retirement~~in Section 8.1(d) ~~During~~of the ~~vesting~~Purchase ~~period,~~Agreement ~~dividends on Time Restricted Shares generally shall be retained~~ by replacing the ~~Company~~reference ~~and not delivered~~ to ~~the~~“February ~~Participant~~23, ~~until~~2026” ~~such~~with ~~time~~“May 25, if2026”. ~~any,~~Except as ~~such~~specifically ~~shares~~modified ~~become~~and ~~vested~~amended ~~and~~by ~~not~~Amendment ~~subject~~No. 2, tothe ~~forfeiture~~Purchase toAgreement ~~the~~remains ~~Company~~unchanged.

~~Performance~~Neither ~~Restricted~~the ~~Shares~~Company nor any of its controlled affiliates has any material relationship with Seller or RWA, other than with respect to the Purchase Agreement, Amendment No. 1 and Amendment No. 2.

~~Performance~~The ~~Restricted~~foregoing ~~Shares~~summary ~~generally vest after a performance period~~ of ~~three~~Amendment ~~years~~No. 2 ~~based~~does onnot ~~the~~purport ~~attainment~~to ofbe ~~certain~~complete ~~performance~~and ~~thresholds~~is ofsubject ~~certain~~to, ~~performance~~and ~~goals,~~qualified ~~each~~in asits ~~set~~entirety by, the ~~Compensation~~full ~~Committee~~text ~~towards the beginning~~ of ~~the~~Amendment ~~performance period~~No. 2 ~~The~~attached ~~Compensation~~hereto ~~Committee~~as ~~has~~Exhibit ~~chosen~~2.1. ~~two performance goals for the three-year performance period ending December 31, 2028:~~

1Amendment No. 2 ~~three~~has been included to provide investors with information regarding its terms. Amendment No. 2 is not intended to provide any factual information about the Company. The representations, warranties and covenants contained in Amendment No. 2 were made only for purposes of Amendment No. 2 and as of specific dates and were solely for the benefit of the parties to Amendment No. 2. Moreover, the representations and warranties contained in Amendment No. 2 generally were made for the purpose of allocating contractual risk among the parties to Amendment No. 2 instead of establishing matters as facts, and may be subject to standards of materiality applicable to the parties to Amendment No. 2 that differ from those applicable to investors. Investors are not third-~~year~~party ~~average~~beneficiaries ~~return~~under onAmendment ~~common~~No. 2 ~~equity~~and (should not rely on the ~~“ROE~~representations, ~~Goal”);~~warranties and covenants contained

2 therein or any descriptions thereof as characterizations of the actual state of facts or condition of the Company or any of its subsidiaries or affiliates. ~~three-year~~Additionally, ~~average~~information ~~growth~~concerning the subject matter of the representations and warranties contained in ~~book~~Amendment ~~value~~No. ~~per~~2 may ~~share~~change (after the ~~“Book~~date ~~Value~~of ~~Goal”)~~Amendment No. 2, which subsequent information may or may not be fully reflected in the Company’s public disclosures.

InForward-Looking ~~general:~~Statements

•This ~~25%~~Form 8-K contains forward-looking statements. All statements, other than statements of ~~Performance~~historical ~~Restricted~~fact, ~~Shares~~included ~~will~~in ~~vest~~this ifForm 8-K are forward-looking statements. Forward-looking statements include declarations regarding the Company’s ~~attains~~beliefs and current expectations. These forward-looking statements are subject to the ~~minimum~~inherent ~~ROE~~risks ~~Goal~~and uncertainties in predicting future results and conditions that could cause the actual results to differ materially from those projected in these forward-looking statements. Some, but not all, of the risks and uncertainties include the following: general economic conditions; market conditions; the trading price of the Company’s common stock; the Company’s capital needs; the Company’s determination of appropriate sources of funding; risks described elsewhere in this Current Report on Form 8-K; and other risks detailed in the Company’s filings with the Securities and Exchange Commission. These forward-looking statements speak only as of the date they are made. The Company undertakes no obligation, and does not intend, to update these forward-looking statements except as required by law.

• 50% of Performance Restricted Shares will vest if the Company attains the target ROE Goal; and

• 75% of Performance Restricted Shares will vest if the Company attains the maximum ROE Goal.

Also, in general, an additional:

• 25% of Performance Restricted Shares will vest if the Company attains the minimum Book Value Goal;

• 50% of Performance Restricted Shares will vest if the Company attains the target Book Value Goal; and

• 75% of Performance Restricted Shares will vest if the Company attains the maximum Book Value Goal.

If the Company’s level of attainment of the ROE Goal or the Book Value Goal exceeds the minimum but is less than the target, then the amount of vesting or forfeiture will be determined on a straight-line basis between the minimum and the target. If the level of achievement of the ROE Goal or the Book Value Goal exceeds the target but is less than the maximum, then the amount of vesting or forfeiture will be determined on a straight-line basis between the target and the maximum.

Furthermore, if the number of a Participant’s Performance Restricted Shares that would vest exceeds 100% of such Participant’s Performance Restricted Shares, then the Company will issue additional shares (“Additional Shares”) to the Participant in an amount equal to the vesting percentage in excess of 100% multiplied by the number of the Participant’s Performance Restricted Shares.

Prior to the end of the performance period, the Performance Restricted Shares are subject to forfeiture if the Participant ceases to be employed by the Company other than due to the Participant’s death, disability or retirement. If a Participant dies, becomes disabled, or retires during the performance period, then vesting will be pro-rated based on the number of months of service before the Participant’s death, disability, or retirement during the performance period.

During the performance period, dividends on Performance Restricted Shares generally shall be retained by the Company and not delivered to the Participant until such time, if any, as such shares become vested and not subject to forfeiture to the Company. No dividends on Additional Shares will be credited to a Participant’s account until the Company issues the Additional Shares to the Participant.

Summary of Time Restricted Shares and Performance Restricted Shares

The following table summarizes certain terms of the Time Restricted Shares and the Performance Restricted Shares.

Award	Number of Awards	Vesting Description	PerformanceThreshold (1)	Amount of Award Vested (2)
Time Restricted Shares	50% of Total Number	Award vests over a four-year period at a rate of 25% per year, generally subject to continued employment.	n/a	Award vests over a four-year period at a rate of 25% per year, generally subject to continued employment.
Performance Restricted Shares	50% of Total Number	50% of Performance Restricted Shares will vest if Company achieves its target ROE Goal	minimum	25% vesting of Performance Restricted Shares
			target	50% vesting of Performance Restricted Shares
			maximum	75% vesting of Performance Restricted Shares
		50% of Performance Restricted Shares will vest if Company achieves its target Book Value Goal	minimum	25% vesting of Performance Restricted Shares
			target	50% vesting of Performance Restricted Shares
			maximum	75% vesting of Performance Restricted Shares

(1) If the Company’s level of attainment of the ROE Goal or the Book Value Goal exceeds the minimum but is less than the target, then the amount of vesting or forfeiture will be determined on a straight-line basis between the minimum and the target. If the level of achievement of the ROE Goal or the Book Value Goal exceeds the target but is less than the maximum, then the amount of vesting or forfeiture will be determined on a straight-line basis between the target and the maximum.

(2) If the number of a Participant’s Performance Restricted Shares that would vest exceeds 100% of such Participant’s Performance Restricted Shares, then the Company will issue Additional Shares to the Participant in an amount equal to the vesting percentage in excess of 100% multiplied by the number of the Participant’s Performance Restricted Shares

The foregoing description of Time Restricted Shares is qualified in its entirety by reference to (i) the full text of the form of Restricted Stock Agreement (Time Vesting), which is filed herewith as Exhibit 10.1 to this Current Report on Form 8-K and (ii) the Company’s Third Amended and Restated 2003 Stock Plan, which is incorporated by reference herewith as Exhibit 10.3 to this Current Report on Form 8-K. The foregoing description of Performance Restricted Shares is qualified in its entirety by reference to (i) the full text of the form of Restricted Stock Agreement (Performance Vesting), which is filed herewith as Exhibit 10.2 to this Current Report on Form 8-K and (ii) the Company’s Third Amended and Restated 2003 Stock Plan, which is incorporated by reference herewith as Exhibit 10.3 to this Current Report on Form 8-K.

Grants of Time Restricted Shares and Performance Restricted Shares

On January 27, 2026, the Company granted Time Restricted Shares and Performance Restricted Shares to the Chief Executive Officer, the Chief Financial Officer and the named executive officers of the Company as follows:

Name	Principal Position	Amount ofTimeRestrictedShares	Amount ofPerformanceRestrictedShares
Thomas P. Meissner, Jr.	Chairman of the Board & Chief Executive Officer	8,090	8,090
Robert B. Hevert	President & Chief Administrative Officer	3,740	3,740
Daniel J. Hurstak	Senior Vice President, Chief Financial Officer & Treasurer	2,430	2,430
Justin Eisfeller	Vice President & Chief Transformation Officer	1,080	1,080
Christopher J. Leblanc	Senior Vice President, Gas Operations	1,080	1,080

The Company has entered into, or will enter into, agreements with each recipient named in the table above in the forms filed herewith as Exhibit 10.1 (form of Restricted Stock Agreement (Time Vesting)) and Exhibit 10.2 (form of Restricted Stock Agreement (Performance Vesting)) to this Current Report on Form 8-K.

Grants of Unrestricted Shares of Common Stock

On January 27, 2026, the Company granted unrestricted shares of common stock to the Chief Executive Officer, the Chief Financial Officer and the named executive officers of the Company as follows:

Name	Principal Position	Amount ofUnrestrictedShares
Thomas P. Meissner, Jr.	Chairman of the Board & Chief Executive Officer	310
Robert B. Hevert	President & Chief Administrative Officer	90
Daniel J. Hurstak	Senior Vice President, Chief Financial Officer & Treasurer	40
Justin Eisfeller	Vice President & Chief Transformation Officer	40
Christopher J. Leblanc	Senior Vice President, Gas Operations	40

The Company granted these unrestricted shares of common stock pursuant to the Company’s Third Amended and Restated 2003 Stock Plan and the applicable Restricted Stock Agreement (Performance Vesting), in each case based on the Company attaining in excess of the combined target ROE Goal and target Book Value Goal over the 2023-2025 performance period with respect to Performance Restricted Shares that were granted in 2023.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

Number	Exhibit	Reference* (1)
10.1**	Form of Restricted Stock Agreement (Time Vesting)	Filed herewith
2.1	Amendment No. 2 to Purchase and Sale Agreement, dated as of February 23, 2026, by and among Unitil Corporation, Aquarion Water Authority and South Central Connecticut Regional Water Authority.	Filed herewith
10.2**	Form of Restricted Stock Agreement (Performance Vesting)	Filed herewith
10.1	Amendment No. 1 to Distribution Agreement, dated February 19, 2026, with Huntington Securities, Inc. and Scotia Capital (USA) Inc. (as agents and/or forward sellers) and Huntington Securities, Inc. and The Bank of Nova Scotia (as forward purchasers)	Filed herewith
10.3**	Unitil Corporation Third Amended and Restated 2003 Stock Plan	Exhibit 10.1 to Form 10-Q forMarch 31, 2024 (SEC FileNo. 1-8858)
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)	Filed herewith
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

*(1) The exhibits referred to in this column by specific designations and dates have heretofore been filed with or furnished to the Securities and Exchange Commission under such designations and are hereby incorporated by reference.

** These exhibits represent a management contract or compensatory plan.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

UNITIL CORPORATION By: /s/ Daniel J. Hurstak Daniel J. Hurstak Senior Vice President, Chief Financial Officer and Treasurer


UNITIL CORPORATION

By:		/s/ Daniel J. Hurstak
		Daniel J. Hurstak
		Senior Vice President, Chief Financial Officer and Treasurer

Date:		February 24, 2026

Date: February 2, 2026

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