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 |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 29, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2026 | Jul 30, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2026 | May 19, 2026 |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| ARS | Annual report to shareholders | Apr 6, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 6, 2026 | — |
| DEF 14A | Proxy statement | Apr 6, 2026 | May 19, 2026 |
| 8-K |
Current report
Officer or director change
|
Mar 26, 2026 | Mar 26, 2026 |
| 8-K |
Current report
Material agreement
|
Feb 24, 2026 | Feb 20, 2026 |
| 424B5 | Prospectus supplement | Feb 20, 2026 | — |
| 10-K | Annual report | Feb 19, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2026 | Feb 19, 2026 |
| 8-K |
Current report
Officer or director change
|
Dec 22, 2025 | Dec 22, 2025 |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2025 | Oct 31, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| 424B5 | Prospectus supplement | Jul 29, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2025 | May 22, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
May 12, 2025 | May 12, 2025 |
| 424B5 | Prospectus supplement | May 12, 2025 | — |
| S-3ASR | Automatic shelf registration | May 12, 2025 | — |
| 10-Q | Quarterly report | May 1, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| ARS | Annual report to shareholders | Apr 10, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 10, 2025 | — |
| DEF 14A | Proxy statement | Apr 10, 2025 | May 20, 2025 |
| 10-K/A | Amended annual report | Mar 11, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Auditor change
|
Mar 4, 2025 | Feb 28, 2025 |
| 10-K | Annual report | Feb 28, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2025 | Feb 28, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2024 | Nov 26, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 5, 2024 | Nov 5, 2024 |
| 10-Q | Quarterly report | Oct 31, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 8-K |
Current report
Other events
|
Oct 24, 2024 | Oct 24, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 9, 2024 | Oct 9, 2024 |
| 8-K |
Current report
Other events
|
Aug 30, 2024 | Aug 30, 2024 |
| 10-Q | Quarterly report | Jul 31, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| 8-K |
Current report
Other events
|
Jul 24, 2024 | Jul 24, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 10, 2024 | Jun 10, 2024 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 22, 2024 | May 22, 2024 |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| 8-K |
Current report
Other events
|
Apr 25, 2024 | Apr 25, 2024 |
| DEF 14A | Proxy statement | Apr 11, 2024 | May 21, 2024 |
| NT 10-K | Filing | Mar 1, 2024 | Dec 31, 2023 |
| 10-K | Annual report | Mar 1, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 29, 2024 | Feb 29, 2024 |
| 8-K |
Current report
Other events
|
Feb 16, 2024 | Feb 16, 2024 |
| 8-K |
Current report
Other events
|
Jan 29, 2024 | Jan 29, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 23, 2024 | Jan 23, 2024 |
| 8-K |
Current report
Other events
|
Jan 17, 2024 | Jan 17, 2024 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q/A | Amended quarterly report | Nov 8, 2023 | Jun 30, 2023 |
| 10-Q/A | Amended quarterly report | Nov 8, 2023 | Mar 31, 2023 |
| 10-K/A | Amended annual report | Nov 8, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Other events
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Other events
|
Oct 20, 2023 | Oct 20, 2023 |
| 8-K |
Current report
Material agreement
|
Sep 1, 2023 | Sep 1, 2023 |
| 10-Q | Quarterly report | Jul 28, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2023 | Jul 28, 2023 |
| 424B5 | Prospectus supplement | Jul 25, 2023 | — |
| 8-K |
Current report
Other events
|
Jul 20, 2023 | Jul 20, 2023 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 24, 2023 | May 24, 2023 |
| 8-K |
Current report
Officer or director change
|
May 16, 2023 | May 16, 2023 |
| 8-K |
Current report
Other events
|
May 15, 2023 | May 15, 2023 |
| 10-Q | Quarterly report | May 1, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 1, 2023 | May 1, 2023 |
| 8-K |
Current report
Other events
|
Apr 28, 2023 | Apr 28, 2023 |
| DEF 14A | Proxy statement | Apr 10, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Apr 3, 2023 | Apr 3, 2023 |
| 10-K | Annual report | Feb 24, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2023 | Feb 24, 2023 |
| 8-K |
Current report
Other events
|
Feb 8, 2023 | Feb 8, 2023 |
| 8-K |
Current report
Other events
|
Feb 3, 2023 | Feb 3, 2023 |
| 10-Q | Quarterly report | Oct 28, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2022 | Oct 28, 2022 |
| 8-K/A |
Amended current report
Other events
|
Oct 24, 2022 | Oct 21, 2022 |
| 8-K |
Current report
Other events
|
Oct 21, 2022 | Oct 21, 2022 |
| 8-K |
Current report
Other events
|
Sep 15, 2022 | Sep 15, 2022 |
| 8-K |
Current report
Other events
|
Sep 2, 2022 | Sep 2, 2022 |
| 8-K |
Current report
Other events
|
Aug 17, 2022 | Aug 17, 2022 |
| 424B5 | Prospectus supplement | Aug 3, 2022 | — |
| S-3ASR | Automatic shelf registration | Aug 3, 2022 | — |
| 10-Q | Quarterly report | Jul 29, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2022 | Jul 29, 2022 |
| 8-K |
Current report
Other events
|
Jul 22, 2022 | Jul 22, 2022 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 25, 2022 | May 25, 2022 |
| 10-Q | Quarterly report | Apr 29, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2022 | Apr 29, 2022 |
| 8-K |
Current report
Other events
|
Apr 22, 2022 | Apr 22, 2022 |
| DEF 14A | Proxy statement | Apr 8, 2022 | May 23, 2022 |
| 10-K | Annual report | Feb 25, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2022 | Feb 25, 2022 |
| 8-K |
Current report
Other events
|
Jan 27, 2022 | Jan 27, 2022 |
| 8-K |
Current report
Other events
|
Jan 14, 2022 | Jan 14, 2022 |
| 8-K |
Current report
Other events
|
Dec 17, 2021 | Dec 17, 2021 |
| 8-K |
Current report
Other events
|
Nov 10, 2021 | Nov 10, 2021 |
| 10-Q | Quarterly report | Oct 29, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2021 | Oct 29, 2021 |
| 8-K |
Current report
Other events
|
Oct 20, 2021 | Oct 20, 2021 |
| 8-K |
Current report
Material agreement
|
Aug 30, 2021 | Aug 30, 2021 |
| 8-K | Current report | Aug 20, 2021 | Aug 20, 2021 |
| 8-K |
Current report
Other events
|
Aug 3, 2021 | Aug 3, 2021 |
| 10-Q | Quarterly report | Jul 30, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2021 | Jul 30, 2021 |
| 8-K |
Current report
Other events
|
Jul 23, 2021 | Jul 23, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 15, 2021 | Jul 15, 2021 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 27, 2021 | May 27, 2021 |
| 8-K |
Current report
Other events
|
May 20, 2021 | May 20, 2021 |
| 10-Q | Quarterly report | May 5, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 5, 2021 | May 5, 2021 |
| 8-K |
Current report
Other events
|
Apr 23, 2021 | Apr 23, 2021 |
| DEFA14A | Additional proxy material | Apr 12, 2021 | — |
| DEF 14A | Proxy statement | Apr 12, 2021 | May 25, 2021 |
| 10-K | Annual report | Feb 25, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2021 | Feb 25, 2021 |
| 8-K |
Current report
Other events
|
Jan 28, 2021 | Jan 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 15, 2020 | Dec 15, 2020 |
| 10-Q | Quarterly report | Oct 30, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2020 | Oct 30, 2020 |
| 8-K |
Current report
Other events
|
Oct 21, 2020 | Oct 21, 2020 |
| 10-Q | Quarterly report | Jul 31, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2020 | Jul 31, 2020 |
| 8-K |
Current report
Other events
|
Jul 24, 2020 | Jul 24, 2020 |
| 8-K |
Current report
Other events
|
May 28, 2020 | May 28, 2020 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 21, 2020 | May 21, 2020 |
| 8-K |
Current report
Officer or director change
|
May 6, 2020 | May 6, 2020 |
| 10-Q | Quarterly report | May 5, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 5, 2020 | May 5, 2020 |
| DEFA14A | Additional proxy material | Apr 29, 2020 | — |
| 8-K |
Current report
Other events
|
Apr 23, 2020 | Apr 23, 2020 |
| DEF 14A | Proxy statement | Apr 6, 2020 | May 19, 2020 |
| 8-K |
Current report
Other events
|
Mar 24, 2020 | Mar 24, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 9, 2020 | Mar 9, 2020 |
| 10-K | Annual report | Feb 27, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2020 | Feb 27, 2020 |
| 8-K |
Current report
Other events
|
Jan 29, 2020 | Jan 29, 2020 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 22, 2019 | Nov 22, 2019 |
| 424B5 | Prospectus supplement | Nov 20, 2019 | — |
| 8-K |
Current report
Other events
|
Nov 20, 2019 | Nov 20, 2019 |
| 424B5 | Prospectus supplement | Nov 19, 2019 | — |
| 10-Q | Quarterly report | Nov 1, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2019 | Nov 1, 2019 |
| 8-K |
Current report
Other events
|
Oct 23, 2019 | Oct 23, 2019 |
| 8-K |
Current report
Other events
|
Oct 21, 2019 | Oct 21, 2019 |
| 424B3 | Prospectus | Oct 11, 2019 | — |
| 8-K |
Current report
Other events
|
Oct 8, 2019 | Oct 8, 2019 |
| 8-K |
Current report
Other events
|
Oct 3, 2019 | Oct 3, 2019 |
| 8-K |
Current report
Material agreement
|
Sep 25, 2019 | Sep 25, 2019 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Sep 23, 2019 | Sep 23, 2019 |
| 8-K |
Current report
Other events
|
Sep 6, 2019 | Sep 6, 2019 |
| 424B5 | Prospectus supplement | Sep 6, 2019 | — |
| S-3ASR | Automatic shelf registration | Sep 6, 2019 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Sep 6, 2019 | Sep 6, 2019 |
| 8-K |
Current report
Other events
|
Aug 5, 2019 | Aug 5, 2019 |
| 10-Q | Quarterly report | Jul 31, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2019 | Jul 31, 2019 |
| 8-K |
Current report
Other events
|
Jul 25, 2019 | Jul 25, 2019 |
| 8-K/A |
Amended current report
Regulation FD disclosure
|
Jul 18, 2019 | Jul 17, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 17, 2019 | Jul 17, 2019 |
| 8-K |
Current report
Officer or director change
|
Jul 2, 2019 | Jul 2, 2019 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 22, 2019 | May 22, 2019 |
| 10-Q | Quarterly report | May 6, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 6, 2019 | May 6, 2019 |
| 8-K |
Current report
Other events
|
Apr 25, 2019 | Apr 25, 2019 |
| 8-K |
Current report
Officer or director change
|
Apr 22, 2019 | Apr 22, 2019 |
| DEF 14A | Proxy statement | Apr 11, 2019 | May 21, 2019 |
| 10-K | Annual report | Mar 8, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 8, 2019 | Mar 8, 2019 |
| 8-K |
Current report
Other events
|
Jan 29, 2019 | Jan 29, 2019 |
| 8-K |
Current report
Other events
|
Dec 18, 2018 | Dec 18, 2018 |
| 424B3 | Prospectus | Dec 13, 2018 | — |
| 10-Q | Quarterly report | Nov 2, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2018 | Nov 2, 2018 |
| 8-K |
Current report
Officer or director change
|
Oct 29, 2018 | Oct 29, 2018 |
| 8-K |
Current report
Other events
|
Oct 24, 2018 | Oct 24, 2018 |
| 10-Q | Quarterly report | Aug 2, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2018 | Aug 2, 2018 |
| 8-K |
Current report
Other events
|
Jul 26, 2018 | Jul 26, 2018 |
| 8-K |
Current report
Other events
|
Jul 18, 2018 | Jul 18, 2018 |
| 8-K |
Current report
Officer or director change
|
May 24, 2018 | May 24, 2018 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 23, 2018 | May 23, 2018 |
| 10-Q | Quarterly report | May 7, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 7, 2018 | May 7, 2018 |
| 8-K |
Current report
Other events
|
Apr 25, 2018 | Apr 25, 2018 |
| DEF 14A | Proxy statement | Apr 12, 2018 | May 22, 2018 |
| 8-K |
Current report
Other events
|
Mar 27, 2018 | Mar 27, 2018 |
| 10-K | Annual report | Mar 9, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2018 | Mar 9, 2018 |
| 8-K |
Current report
Other events
|
Jan 29, 2018 | Jan 29, 2018 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Nov 22, 2017 | Nov 22, 2017 |
| 10-Q | Quarterly report | Nov 2, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2017 | Nov 2, 2017 |
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.
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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.