Middlesex Water Co SEC filings MSEX
Middlesex Water Co has 1,000 filings in SEC EDGAR's recent list, going back to Aug 11, 2008. Its latest annual report, Form ARS, was filed on Apr 6, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEFA14A | Additional proxy material | Apr 6, 2026 | — |
| DEF 14A | Proxy statement | Apr 6, 2026 | May 19, 2026 |
| DEFA14A | Additional proxy material | Apr 10, 2025 | — |
| DEF 14A | Proxy statement | Apr 10, 2025 | May 20, 2025 |
| DEF 14A | Proxy statement | Apr 11, 2024 | May 21, 2024 |
| DEF 14A | Proxy statement | Apr 10, 2023 | — |
| DEF 14A | Proxy statement | Apr 8, 2022 | May 23, 2022 |
| DEFA14A | Additional proxy material | Apr 12, 2021 | — |
| DEF 14A | Proxy statement | Apr 12, 2021 | May 25, 2021 |
| DEFA14A | Additional proxy material | Apr 29, 2020 | — |
| DEF 14A | Proxy statement | Apr 6, 2020 | May 19, 2020 |
| DEF 14A | Proxy statement | Apr 11, 2019 | May 21, 2019 |
| DEF 14A | Proxy statement | Apr 12, 2018 | May 22, 2018 |
| DEF 14A | Proxy statement | Apr 13, 2017 | May 23, 2017 |
| DEF 14A | Proxy statement | Apr 12, 2016 | May 24, 2016 |
| DEF 14A | Proxy statement | Apr 7, 2015 | May 19, 2015 |
| DEF 14A | Proxy statement | Apr 8, 2014 | May 20, 2014 |
| DEF 14A | Proxy statement | Apr 9, 2013 | May 21, 2013 |
| DEF 14A | Proxy statement | Apr 10, 2012 | May 22, 2012 |
| DEF 14A | Proxy statement | Apr 12, 2011 | Apr 12, 2011 |
| DEF 14A | Proxy statement | Apr 12, 2010 | Apr 12, 2010 |
| DEF 14A | Proxy statement | Apr 8, 2009 | May 20, 2009 |
Showing 22 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
- Water Supply (SIC 4941)
- Listed as
- MSEX (Nasdaq), MSEXP (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- NJ
- Headquarters
- Iselin, NJ
- SEC filer status
- Large accelerated filer
- SEC CIK
- 66004
Other Water Supply companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.