Middlesex Water Co SEC filings MSEXP
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 |
|---|---|---|---|
| NT 10-K | Filing | Mar 1, 2024 | Dec 31, 2023 |
| UPLOAD | Letter from the SEC | Oct 19, 2016 | — |
| CORRESP | Letter to the SEC | Oct 11, 2016 | — |
| EFFECT | Filing | Aug 3, 2015 | — |
| CORRESP | Letter to the SEC | Jul 31, 2015 | — |
| UPLOAD | Letter from the SEC | Jun 24, 2013 | — |
| CORRESP | Letter to the SEC | Jun 12, 2013 | — |
| UPLOAD | Letter from the SEC | May 30, 2013 | — |
| CORRESP | Letter to the SEC | May 24, 2013 | — |
| UPLOAD | Letter from the SEC | May 14, 2013 | — |
| EFFECT | Filing | May 19, 2010 | — |
| UPLOAD | Letter from the SEC | Feb 19, 2010 | — |
| CORRESP | Letter to the SEC | Jan 29, 2010 | — |
| UPLOAD | Letter from the SEC | Dec 29, 2009 | — |
| EFFECT | Filing | Aug 24, 2009 | — |
| UPLOAD | Letter from the SEC | Oct 22, 2008 | — |
| UPLOAD | Letter from the SEC | Oct 22, 2008 | — |
| UPLOAD | Letter from the SEC | Oct 9, 2008 | — |
| UPLOAD | Letter from the SEC | Oct 9, 2008 | — |
| CORRESP | Letter to the SEC | Aug 11, 2008 | — |
Showing 20 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.