Company · CIK 755001 # UNITIL CORP | CIK | [755001](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000755001) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 4931 — Electric & Other Services Combined | | Incorporated in | NH | | Business address | NH | | Listed | UTL (NYSE) | | First annual or quarterly report | 1995-03-30 | ## Offerings 8 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-287753 | Shelf Effective | 2025-06-03 | 2026-02-19 | 5 | | 333-258405 | Shelf Effective | 2021-08-03 | 2021-08-05 | 3 | | 333-221333 | Shelf Effective | 2017-11-03 | 2017-12-12 | 4 | | 333-180316 | Shelf Effective | 2012-03-23 | 2012-05-11 | 4 | | 333-168394 | Shelf Dormant | 2010-07-29 | 2010-07-29 | 1 | | 333-158537 | Shelf Effective | 2009-04-10 | 2009-05-21 | 4 | | 333-152823 | Shelf Effective | 2008-08-06 | 2008-12-12 | 3 | | 333-108349 | Shelf Final prospectus | 2003-08-29 | 2003-10-27 | 2 | ## Filings 26 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-02-19 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312526059567/0001193125-26-059567-index.htm) Shelf takedown | 333-287753 | 0001193125-26-059567 | | 2025-08-18 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312525181992/0001193125-25-181992-index.htm) Shelf takedown | 333-287753 | 0001193125-25-181992 | | 2025-08-14 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312525180794/0001193125-25-180794-index.htm) Shelf takedown | 333-287753 | 0001193125-25-180794 | | 2025-06-03 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312525134192/0001193125-25-134192-index.htm) Shelf takedown | 333-287753 | 0001193125-25-134192 | | 2025-06-03 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/755001/000119312525134183/0001193125-25-134183-index.htm) Shelf registered | 333-287753 | 0001193125-25-134183 | | 2021-08-05 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312521237943/0001193125-21-237943-index.htm) Shelf takedown | 333-258405 | 0001193125-21-237943 | | 2021-08-03 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312521235069/0001193125-21-235069-index.htm) Shelf takedown | 333-258405 | 0001193125-21-235069 | | 2021-08-03 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/755001/000119312521234935/0001193125-21-234935-index.htm) Shelf registered | 333-258405 | 0001193125-21-234935 | | 2017-12-12 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312517367497/0001193125-17-367497-index.htm) Shelf takedown | 333-221333 | 0001193125-17-367497 | | 2017-12-11 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312517366251/0001193125-17-366251-index.htm) Shelf takedown | 333-221333 | 0001193125-17-366251 | | 2017-12-08 | [EFFECT](https://www.sec.gov/Archives/edgar/data/755001/999999999517003186/9999999995-17-003186-index.htm) Declared effective | 333-221333 | 9999999995-17-003186 | | 2017-11-03 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312517332822/0001193125-17-332822-index.htm) Shelf registered | 333-221333 | 0001193125-17-332822 | | 2012-05-11 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312512227665/0001193125-12-227665-index.htm) Shelf takedown | 333-180316 | 0001193125-12-227665 | | 2012-05-08 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312512218444/0001193125-12-218444-index.htm) Shelf takedown | 333-180316 | 0001193125-12-218444 | | 2012-04-11 | [EFFECT](https://www.sec.gov/Archives/edgar/data/755001/999999999512001014/9999999995-12-001014-index.htm) Declared effective | 333-180316 | 9999999995-12-001014 | | 2012-03-23 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312512129685/0001193125-12-129685-index.htm) Shelf registered | 333-180316 | 0001193125-12-129685 | | 2010-07-29 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312510170767/0001193125-10-170767-index.htm) Shelf registered | 333-168394 | 0001193125-10-170767 | | 2009-05-21 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312509116563/0001193125-09-116563-index.htm) Shelf takedown | 333-158537 | 0001193125-09-116563 | | 2009-05-14 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312509111536/0001193125-09-111536-index.htm) Shelf takedown | 333-158537 | 0001193125-09-111536 | | 2009-04-29 | [EFFECT](https://www.sec.gov/Archives/edgar/data/755001/999999999509001096/9999999995-09-001096-index.htm) Declared effective | 333-158537 | 9999999995-09-001096 | | 2009-04-10 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312509077200/0001193125-09-077200-index.htm) Shelf registered | 333-158537 | 0001193125-09-077200 | | 2008-12-12 | [424B5](https://www.sec.gov/Archives/edgar/data/755001/000119312508252162/0001193125-08-252162-index.htm) Shelf takedown | 333-152823 | 0001193125-08-252162 | | 2008-12-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/755001/999999999508003590/9999999995-08-003590-index.htm) Declared effective | 333-152823 | 9999999995-08-003590 | | 2008-08-06 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312508168456/0001193125-08-168456-index.htm) Shelf registered | 333-152823 | 0001193125-08-168456 | | 2003-10-27 | [424B4](https://www.sec.gov/Archives/edgar/data/755001/000119312503067350/0001193125-03-067350-index.htm) Final prospectus | 333-108349 | 0001193125-03-067350 | | 2003-08-29 | [S-3](https://www.sec.gov/Archives/edgar/data/755001/000119312503043620/0001193125-03-043620-index.htm) Shelf registered | 333-108349 | 0001193125-03-043620 | [All filings of this company](https://equitycapital.markets/filings?cik=755001) · [CSV](https://equitycapital.markets/filings.csv?cik=755001) --- Source page: https://equitycapital.markets/company/755001 · Data: U.S. SEC EDGAR · CC BY 4.0