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 |
|---|---|---|---|
| 424B5 | Prospectus supplement | Feb 19, 2026 | — |
| 424B5 | Prospectus supplement | Aug 18, 2025 | — |
| 424B5 | Prospectus supplement | Aug 14, 2025 | — |
| 424B5 | Prospectus supplement | Jun 3, 2025 | — |
| S-3ASR | Automatic shelf registration | Jun 3, 2025 | — |
| S-8 | Employee stock plan registration | Jan 21, 2025 | — |
| S-3D | Form s-3d | Aug 16, 2023 | — |
| 424B5 | Prospectus supplement | Aug 5, 2021 | — |
| 424B5 | Prospectus supplement | Aug 3, 2021 | — |
| S-3ASR | Automatic shelf registration | Aug 3, 2021 | — |
| S-8 | Employee stock plan registration | Oct 31, 2019 | — |
| 424B5 | Prospectus supplement | Dec 12, 2017 | — |
| 424B5 | Prospectus supplement | Dec 11, 2017 | — |
| S-3 | Shelf registration | Nov 3, 2017 | — |
| S-3DPOS | Form s-3dpos | Jan 28, 2014 | — |
| S-8 | Employee stock plan registration | Nov 9, 2012 | — |
| 424B5 | Prospectus supplement | May 11, 2012 | — |
| FWP | Free writing prospectus | May 11, 2012 | — |
| 424B5 | Prospectus supplement | May 8, 2012 | — |
| S-3/A | Amendment no. 1 to form s-3 registration statement | Apr 6, 2012 | — |
| S-3 | Shelf registration | Mar 23, 2012 | — |
| S-3 | Shelf registration | Jul 29, 2010 | — |
| 424B5 | Prospectus supplement | May 21, 2009 | — |
| FWP | Free writing prospectus | May 21, 2009 | — |
| 424B5 | Prospectus supplement | May 14, 2009 | — |
| S-3/A | Amendment no. 1 to form s-3 | Apr 24, 2009 | — |
| S-3 | Shelf registration | Apr 10, 2009 | — |
| 424B5 | Prospectus supplement | Dec 12, 2008 | — |
| FWP | Free writing prospectus | Dec 11, 2008 | — |
| S-3/A | Amendment no. 2 to form s-3 | Dec 3, 2008 | — |
| S-3/A | Amendment no. 1 to form s-3 | Nov 25, 2008 | — |
| S-3 | Shelf registration | Aug 6, 2008 | — |
Showing 32 filings. 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.
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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.