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UNITIL CORP

For the period ended Jun 30, 2026. Filed Aug 3, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 3, 2026

UTL$56.13-0.4%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Item 6. Exhibits

(a) Exhibits

Exhibit No.Description of ExhibitReference*
2.1Amendment No. 3 to Purchase and Sale Agreement, dated as of May 25, 2026, by and among Unitil Corporation, Aquarion Water Authority and South Central Connecticut Regional Water Authority.Exhibit 2.1 to Form 8-K for May 25, 2026 (SEC File No. 1-8858)
2.2Amendment No. 4 to Purchase and Sale Agreement, dated as of June 30, 2026, by and among Unitil Corporation, Aquarion Water Authority and South Central Connecticut Regional Water Authority.Exhibit 2.1 to Form 8-K for June 30, 2026 (SEC File No. 1-8858)
4.1 (1)(2)Note Purchase Agreement dated April 30, 2026 by and among Fitchburg Gas and Electric Light Company and the several purchasers named therein.Exhibit 4.1 to Form 8-K for April 30, 2026 (SEC File No. 1-8858)
4.25.62% Senior Note, Series 2026A, due April 30, 2036, issued by Fitchburg Gas and Electric Light Company to State Farm Life Insurance CompanyExhibit 4.2 to Form 8-K for April 30, 2026 (SEC File No. 1-8858)
4.35.87% Senior Note, Series 2026B, due April 30, 2041, issued by Fitchburg Gas and Electric Light Company to State Farm Life Insurance CompanyExhibit 4.2 to Form 8-K for April 30, 2026 (SEC File No. 1-8858)
4.4 (2)Amended and Restated Credit Agreement dated June 30, 2026 among Unitil Corporation, The Bank of Nova Scotia, as agent, and The Bank of Nova Scotia, as lenderExhibit 4.1 to Form 8-K for June 30, 2026 (SEC File No. 1-8858)
10.1 (2)Operating and Transition Services Agreement dated June 30, 2026 among Aquarion Water Authority, Unitil Corporation and Eversource EnergyExhibit 10.2 to Form 8-K for June 30, 2026 (SEC File No. 1-8858)
31.1Certification of Chief Executive Officer Pursuant to Rule 13a-14 of the Exchange Act, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002Filed herewith
31.2Certification of Chief Financial Officer Pursuant to Rule 13a-14 of the Exchange Act, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002Filed herewith
31.3Certification of Chief Accounting Officer Pursuant to Rule 13a-14 of the Exchange Act, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002Filed herewith
32.1Certifications of Chief Executive Officer, Chief Financial Officer and Chief Accounting Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002Filed herewith
99.1Unitil Corporation Press Release Dated August 3, 2026 Announcing Earnings for the Quarter Ended June 30, 2026.Furnished herewith
Exhibit No.Description of ExhibitReference*
101.INSInline XBRL Instance Document. The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document.Filed herewith
101.SCHInline XBRL Taxonomy Extension Schema with Embedded Linkbase Documents.Filed herewith
104Cover Page Interactive Data File – The cover page interactive data file does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.Filed herewith
  • 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.

(1) Certain information has been excluded from this exhibit pursuant to Item 601(b)(2)(ii) of Regulation S-K.

(2) In accordance with Item 601(a)(5) of Regulation S-K, this exhibit omits certain of its schedules and exhibits. This exhibit’s table of contents, or the cover page of its omitted schedules and exhibits, includes a brief description of the subject matter of all of its omitted schedules and exhibits. Unitil Corporation hereby undertakes to furnish supplementally copies of any of the omitted schedules and exhibits upon request by the Securities and Exchange Commission or its staff.

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