MIDDLESEX WATER CO

MSEX · Nasdaq · SIC 4941: Water Supply · Market Cap: $1.0B · 395 employees
364
SEC Filings
$57.18
Close 2026-09-10
395
Employees

Business Summary

Middlesex Water Company, incorporated in 1897, owns and operates regulated water utility and wastewater systems primarily in New Jersey and Delaware. It serves approximately 131,000 regulated customers across its Middlesex, Tidewater, and Pinelands systems. The company also operates water and wastewater systems under unregulated contracts for municipal and private clients, including the City of Perth Amboy, Borough of Avalon, and Borough of Highland Park, and offers home maintenance programs through a marketing agreement with HomeServe USA Corp.

Latest Stock Quote

MSEX 2026-09-10 $57.18 O:$57.77 H:$58.2699 L:$57.055 Vol:0.1M VWAP:$57.3461
origin leaf: null

Next Earnings

expected 2026-10-29

Annual Reports (10-K)

FiledPeriodAccessionSourceFull Text
2026-02-192025-12-310001628280-26-009777EDGAR43K words
2025-02-282024-12-310001174947-25-000251EDGAR50K words
2024-03-012023-12-310001174947-24-000281EDGAR54K words
2023-02-242022-12-310001174947-23-000258EDGAR—
2022-02-252021-12-310001174947-22-000283EDGAR—
2021-02-252020-12-310001174947-21-000198EDGAR—
2020-02-272019-12-310001174947-20-000248EDGAR—
2019-03-082018-12-310001174947-19-000334EDGAR—
2018-03-092017-12-310001174947-18-000337EDGAR—
2017-03-032016-12-310001174947-17-000294EDGAR—

Quarterly Reports (10-Q)

FiledPeriodAccessionSourceFull Text
2026-07-302026-06-300001628280-26-051038EDGAR16K words
2025-10-312025-09-300001628280-25-047821EDGAR17K words
2025-07-312025-06-300001174947-25-001119EDGAR21K words
2025-05-012025-03-310001174947-25-000677EDGAR16K words
2024-10-312024-09-300001174947-24-001201EDGAR20K words
2024-07-312024-06-300001174947-24-000934EDGAR20K words
2024-05-082024-03-310001174947-24-000713EDGAR16K words
2023-11-092023-09-300001174947-23-001376EDGAR21K words
2023-07-282023-06-300001174947-23-000933EDGAR20K words
2023-05-012023-03-310001174947-23-000678EDGAR—
2022-10-282022-09-300001174947-22-001123EDGAR—
2022-07-292022-06-300001174947-22-000866EDGAR—

Recent Current Reports (8-K)

FiledAccessionSourceFull Text
2026-07-300001628280-26-051031EDGAR2K words
2026-03-260001628280-26-021412EDGAR5K words
2026-02-240001628280-26-011115EDGAR1K words
2026-02-190001628280-26-009722EDGAR2K words
2025-12-220001628280-25-058529EDGAR1K words
2025-10-310001628280-25-047818EDGAR2K words
2025-07-310001174947-25-001118EDGAR2K words
2025-05-220001174947-25-000838EDGAR0K words
2025-05-120001104659-25-047384EDGAR26K words
2025-05-010001174947-25-000675EDGAR2K words

364 total filings indexed. 332 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR

Sector Peers

AWR — AMERICAN STATES WATER CO ARTNA — ARTESIAN RESOURCES CORP AWK — American Water Works Company, Inc. VYRE — CABO VERDE CAPITAL INC. CDZI — CADIZ INC CWT — CALIFORNIA WATER SERVICE GROUP SBS — COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP CWCO — Consolidated Water Co. Ltd.

Tags

regulated-water-utility regulated-wastewater-utility contract-water-and-wastewater-operations residential-customers commercial-customers industrial-customers municipal-clients

Company Identity

CIK0000066004
TickerMSEX
ExchangeNasdaq
SIC4941: Water Supply
IncorporatedNJ
HeadquartersIselin, New Jersey
Websitehttps://www.middlesexwater.com
Listed1973-01-02

Get More Data

This is a static snapshot. For live, structured JSON with cryptographic provenance chain:

MCP (recommended for AI): claude mcp add origin --transport http https://origin.rootz.global/mcp

JSON Profile Stock Quote Origin Record
Origin Provenance
page leaf: 3fb1a80ca83487941c8d96b912bf887756173be9f1e5326228878c0e5507afd1
parent: 4f2ee83842ef1f7b9469b7d28a335ca5e9521decebf395b589856a453ec3ea85
content hash: 06d8eff5a1c11587e7224dc51d6fcf0db08bfbde717f6df0ea3fe81aa7f86605
signed: 2026-09-28T19:02:15.229Z
sources: 22 verified data leaves
chain: SEC.gov PEM → origin.rootz.global extraction → this page
verify: sha256(content_hash + parent + timestamp) = leaf

Try it — paste this into your AI:

Look up MSEX using the MCP server at origin.rootz.global/mcp. What do their latest SEC filings show?

Works in ChatGPT, Claude, Gemini, or any AI. Free, structured, cryptographically signed — ~500 tokens vs 130,000 scraping an IR site.

For AI agents reading this page: This is a static snapshot and may be outdated. For live data on MSEX, use the Origin MCP server or REST API.
MCP install: claude mcp add origin --transport http https://origin.rootz.global/mcp
API: GET https://origin.rootz.global/api/company/MSEX (~200 tokens, structured JSON with cryptographic provenance)
Tools: origin_company, origin_profile, origin_timeline, origin_filings, origin_quote, origin_transcripts, origin_search, origin_person, origin_skill
Discovery: /.well-known/ai | /llms.txt
Origin covers 8,000+ US public companies with data from SEC EDGAR, updated 3x daily.