Unitil Corp SEC filings UTL
Unitil Corp has 1,000 filings in SEC EDGAR's recent list, going back to Feb 12, 2007. Its latest annual report, Form ARS, was filed on Mar 27, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 2, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 26, 2026 (material agreement, agreement ended, acquisition or sale of assets). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 2, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets
|
Oct 26, 2026 | Oct 21, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 19, 2026 | Oct 14, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 29, 2026 | Sep 24, 2026 |
| 10-Q | Quarterly report | Aug 3, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Jul 7, 2026 | Jun 30, 2026 |
| 11-K | Employee savings plan report | Jun 26, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement
|
May 27, 2026 | May 25, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
May 15, 2026 | May 15, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
May 5, 2026 | Apr 30, 2026 |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 1, 2026 | Apr 29, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 29, 2026 | Apr 29, 2026 |
| ARS | Annual report to shareholders | Mar 27, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Mar 27, 2026 | Apr 29, 2026 |
| 8-K |
Current report
Material agreement
|
Feb 24, 2026 | Feb 19, 2026 |
| 424B5 | Prospectus supplement | Feb 19, 2026 | — |
| 10-K | Annual report | Feb 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Feb 2, 2026 | Jan 27, 2026 |
| 8-K |
Current report
Material agreement
|
Jan 29, 2026 | Jan 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 18, 2025 | Dec 15, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 4, 2025 | Oct 29, 2025 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Nov 3, 2025 | Oct 31, 2025 |
| 10-Q | Quarterly report | Nov 3, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 18, 2025 | Aug 14, 2025 |
| 424B5 | Prospectus supplement | Aug 18, 2025 | — |
| 424B5 | Prospectus supplement | Aug 14, 2025 | — |
| 10-Q | Quarterly report | Aug 4, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 14, 2025 | Jul 8, 2025 |
| 11-K | Employee savings plan report | Jun 25, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement
|
Jun 4, 2025 | Jun 3, 2025 |
| 424B5 | Prospectus supplement | Jun 3, 2025 | — |
| S-3ASR | Automatic shelf registration | Jun 3, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
May 12, 2025 | May 6, 2025 |
| 10-Q | Quarterly report | May 6, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 5, 2025 | Apr 30, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 30, 2025 | Apr 30, 2025 |
| UPLOAD | Letter from the SEC | Apr 16, 2025 | — |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Apr 4, 2025 | Mar 31, 2025 |
| ARS | Annual report to shareholders | Mar 28, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Mar 28, 2025 | Apr 30, 2025 |
| CORRESP | Letter to the SEC | Mar 20, 2025 | — |
| CORRESP | Letter to the SEC | Mar 11, 2025 | — |
| UPLOAD | Letter from the SEC | Feb 27, 2025 | — |
| 10-K | Annual report | Feb 10, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Feb 4, 2025 | Jan 29, 2025 |
| S-8 | Employee stock plan registration | Jan 21, 2025 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 5, 2024 | Oct 30, 2024 |
| 10-Q | Quarterly report | Nov 4, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 27, 2024 | Aug 21, 2024 |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 19, 2024 | Jul 18, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Jul 12, 2024 | Jul 8, 2024 |
| 11-K | Employee savings plan report | Jun 27, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 7, 2024 | May 1, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
May 1, 2024 | May 1, 2024 |
| DEFA14A | Additional proxy material | Apr 8, 2024 | — |
| ARS | Annual report to shareholders | Mar 29, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Mar 29, 2024 | May 1, 2024 |
| 10-K | Annual report | Feb 13, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 5, 2023 | Dec 1, 2023 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 23, 2023 | Aug 17, 2023 |
| S-3D | Form s-3d | Aug 16, 2023 | — |
| 10-Q | Quarterly report | Aug 1, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 11, 2023 | Jul 6, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2023 | Jun 1, 2023 |
| 11-K | Employee savings plan report | Jun 5, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 2, 2023 | Apr 26, 2023 |
| 10-Q | Quarterly report | May 2, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 27, 2023 | Apr 26, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 26, 2023 | Apr 26, 2023 |
| DEFA14A | Additional proxy material | Apr 7, 2023 | — |
| ARS | Annual report to shareholders | Mar 28, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Mar 28, 2023 | — |
| 10-K | Annual report | Feb 14, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 2, 2023 | Feb 1, 2023 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jan 30, 2023 | Jan 24, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 1, 2022 | Oct 26, 2022 |
| 10-Q | Quarterly report | Nov 1, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 5, 2022 | Sep 29, 2022 |
| 10-Q | Quarterly report | Aug 2, 2022 | Jun 30, 2022 |
| 11-K | Employee savings plan report | Jun 23, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 18, 2022 | May 12, 2022 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
May 3, 2022 | Apr 27, 2022 |
| 10-Q | Quarterly report | May 3, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 27, 2022 | Apr 27, 2022 |
| DEF 14A | Proxy statement | Mar 29, 2022 | Apr 27, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 18, 2022 | Mar 14, 2022 |
| 10-K | Annual report | Feb 1, 2022 | Dec 31, 2021 |
| 10-Q | Quarterly report | Nov 2, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 5, 2021 | Aug 3, 2021 |
| 424B5 | Prospectus supplement | Aug 5, 2021 | — |
| 424B5 | Prospectus supplement | Aug 3, 2021 | — |
| S-3ASR | Automatic shelf registration | Aug 3, 2021 | — |
| 10-Q | Quarterly report | Aug 3, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 21, 2021 | Jun 21, 2021 |
| 11-K | Employee savings plan report | Jun 21, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Regulation FD disclosure
|
May 4, 2021 | Apr 28, 2021 |
| 10-Q | Quarterly report | May 4, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 28, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 5, 2021 | Apr 2, 2021 |
| DEF 14A | Proxy statement | Mar 25, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 12, 2021 | Mar 11, 2021 |
| 10-K | Annual report | Feb 2, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 2, 2020 | Nov 30, 2020 |
| 10-Q | Quarterly report | Oct 29, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 21, 2020 | Sep 15, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 4, 2020 | Jul 29, 2020 |
| 10-Q | Quarterly report | Jul 30, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 24, 2020 | Jun 18, 2020 |
| 11-K | Employee savings plan report | Jun 24, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Other events
|
Jun 18, 2020 | Jun 16, 2020 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Regulation FD disclosure
|
May 5, 2020 | Apr 29, 2020 |
| 10-Q | Quarterly report | Apr 30, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 21, 2020 | Apr 17, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 7, 2020 | Mar 26, 2020 |
| UPLOAD | Letter from the SEC | Apr 1, 2020 | — |
| DEF 14A | Proxy statement | Mar 31, 2020 | Apr 29, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 26, 2020 | Mar 26, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2020 | Mar 19, 2020 |
| CORRESP | Letter to the SEC | Mar 23, 2020 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 20, 2020 | Mar 16, 2020 |
| UPLOAD | Letter from the SEC | Mar 11, 2020 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 4, 2020 | Mar 4, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 2, 2020 | Feb 28, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Feb 3, 2020 | Jan 29, 2020 |
| 10-K | Annual report | Jan 30, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 20, 2019 | Dec 18, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 18, 2019 | Dec 17, 2019 |
| S-8 | Employee stock plan registration | Oct 31, 2019 | — |
| 10-Q | Quarterly report | Oct 24, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 17, 2019 | Sep 12, 2019 |
| 10-Q | Quarterly report | Jul 25, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 1, 2019 | Jun 28, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 12, 2019 | Jun 12, 2019 |
| 11-K | Employee savings plan report | Jun 6, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
May 20, 2019 | May 20, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
May 1, 2019 | May 1, 2019 |
| 8-K |
Current report
Shareholder vote results
|
Apr 26, 2019 | Apr 24, 2019 |
| 10-Q | Quarterly report | Apr 25, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 24, 2019 | Apr 24, 2019 |
| DEF 14A | Proxy statement | Mar 27, 2019 | Apr 24, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 5, 2019 | Mar 1, 2019 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Feb 4, 2019 | Jan 30, 2019 |
| 10-K | Annual report | Jan 31, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 3, 2019 | Jan 2, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 4, 2018 | Nov 30, 2018 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 31, 2018 | Oct 24, 2018 |
| 10-Q | Quarterly report | Oct 25, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Other events
|
Sep 4, 2018 | Aug 30, 2018 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jul 31, 2018 | Jul 25, 2018 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 31, 2018 | Jul 25, 2018 |
| 10-Q | Quarterly report | Jul 26, 2018 | Jun 30, 2018 |
| 11-K | Employee savings plan report | Jun 12, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
May 18, 2018 | May 18, 2018 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 7, 2018 | May 2, 2018 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure, Other events
|
May 1, 2018 | Apr 25, 2018 |
| 10-Q | Quarterly report | Apr 26, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2018 | Apr 25, 2018 |
| DEF 14A | Proxy statement | Mar 19, 2018 | Apr 25, 2018 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 6, 2018 | Feb 28, 2018 |
| 8-K |
Current report
Agreement ended, Officer or director change, Regulation FD disclosure
|
Mar 2, 2018 | Mar 1, 2018 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Feb 2, 2018 | Jan 30, 2018 |
| 10-K | Annual report | Feb 1, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 13, 2017 | Dec 11, 2017 |
| 424B5 | Prospectus supplement | Dec 12, 2017 | — |
| 424B5 | Prospectus supplement | Dec 11, 2017 | — |
| EFFECT | Filing | Dec 8, 2017 | — |
| CORRESP | Letter to the SEC | Dec 5, 2017 | — |
| UPLOAD | Letter from the SEC | Nov 13, 2017 | — |
| S-3 | Shelf registration | Nov 3, 2017 | — |
| 8-A12B/A | 8-a12b/a (amendment no. 3) | Nov 3, 2017 | — |
| 8-K |
Current report
Material agreement, New debt
|
Nov 3, 2017 | Nov 1, 2017 |
| 10-Q | Quarterly report | Oct 26, 2017 | Sep 30, 2017 |
| 8-K/A |
Amended current report
Shareholder vote results
|
Aug 25, 2017 | Apr 26, 2017 |
| 10-Q | Quarterly report | Jul 27, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 20, 2017 | Jul 14, 2017 |
| 11-K | Employee savings plan report | Jun 7, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 5, 2017 | Jun 5, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
May 31, 2017 | May 31, 2017 |
| 8-K |
Current report
Officer or director change
|
May 4, 2017 | May 1, 2017 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
May 2, 2017 | Apr 26, 2017 |
| 10-Q | Quarterly report | Apr 27, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 24, 2017 | Apr 24, 2017 |
| 8-K |
Current report
Other events
|
Apr 24, 2017 | Apr 21, 2017 |
| DEF 14A | Proxy statement | Mar 20, 2017 | Apr 26, 2017 |
| 10-K | Annual report | Feb 2, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 26, 2017 | Jan 25, 2017 |
| 10-Q | Quarterly report | Oct 20, 2016 | Sep 30, 2016 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 2, 2016 | Aug 1, 2016 |
| 10-Q | Quarterly report | Jul 21, 2016 | Jun 30, 2016 |
| 11-K | Employee savings plan report | Jun 8, 2016 | Dec 31, 2015 |
| 8-K |
Current report
Regulation FD disclosure
|
May 13, 2016 | May 13, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 5, 2016 | May 2, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 4, 2016 | Apr 29, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 2, 2016 | Apr 29, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 2, 2016 | Apr 29, 2016 |
| 8-K |
Current report
Shareholder vote results
|
Apr 22, 2016 | Apr 20, 2016 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Electric & Other Services Combined (SIC 4931)
- Listed as
- UTL (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- NH
- Headquarters
- Hampton, NH
- SEC filer status
- Large accelerated filer
- SEC CIK
- 755001
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.