UNITIL CORP

Q: Jun 30 2026

Q: Mar 31 2026

FY: Dec 31 2025

Q: Sep 30 2025

Q: Jun 30 2025

Q: Mar 31 2025

FY: Dec 31 2024

Q: Sep 30 2024

Q: Jun 30 2024

Q: Mar 31 2024

FY: Dec 31 2023

Q: Sep 30 2023

Q: Jun 30 2023

Q: Mar 31 2023

FY: Dec 31 2022

Q: Sep 30 2022

Q: Jun 30 2022

Q: Mar 31 2022

FY: Dec 31 2021

Q: Sep 30 2021

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Submission of Matters to a Vote of Security Holders

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Submission of Matters to a Vote of Security Holders

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

No description available

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933

Registration of Securities on Exchange (amendment)

No description available

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Kountze Katherine

WHITELEY DAVID A

COLLIN MARK H

Foster Suzanne

Lewis-Raymond Jane

Alonzo Anne L.

Vogel Justine

Awad Neveen F

Brown Winfield S

VANGUARD CAPITAL MANAGEMENT LLC

BlackRock, Inc.

VANGUARD GROUP INC

Eisfeller Justin

MEISSNER THOMAS P JR

Hevert Robert B

LeBlanc Christopher J

Diggins Todd R

Hurstak Daniel J

Simpson Carleton B

Simpson Carleton B

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual Report Scanned (Paper)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Letter from the SEC

Annual Report Scanned (Paper)

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual Report Scanned (Paper)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual Report Scanned (Paper)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)