UNITIL CORP 10-Q

Item 5. Other Information On November 2, 2021, the Company issued a press release announcing its results of operations for the three and nine month periods ended September 30, 2021. The press release is furnished with this Quarterly Report on Form 10-Q as Exhibit 99.1. Item 6. Exhibits (a) Exhibits Exhibit No. Description of Exhibit Reference 1.1 Underwriting Agreement dated April 4, 2021 among Unitil Corporation, on the one hand, and RBC Capital Markets, LLC and BofA Securities, Inc., on the other hand, for themselves and as representatives of the several underwriters named therein. Exhibit 1.1 to Form 8-K dated August 3, 2021 (File No. 1-8858) 11 Computation of Earnings Per Average Common Share Filed herewith 31.1 Certification 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 2002 Filed herewith 31.2 Certification 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 2002 Filed herewith 31.3 Certification 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 2002 Filed herewith 32.1 Certifications 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 2002 Filed herewith 99.1 Unitil Corporation Press Release Dated November 2, 2021 Announcing Earnings For the Quarter Ended September 30, 2021. Furnished herewith 53 Table of Contents 101.INS Inline 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.SCH Inline XBRL Taxonomy Extension Schema Document. Filed herewith 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document. Filed herewith 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document Filed herewith 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document. Filed herewith 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document. Filed herewith 104 Cover 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 54 Table of Contents 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 thereunto duly authorized. UNITIL CORPORATION (Registrant) Date: November 2, 2021 /s/ Robert B. Hevert Robert B. Hevert Chief Financial Officer Date: November 2, 2021 /s/ Daniel J. Hurstak Daniel J. Hurstak Chief Accounting Officer 55