# CORNERSTONE NATURAL GAS INC

CORNERSTONE NATURAL GAS INC is a company headquartered in Dallas, TX, United States.

## Company overview

- **Legal name:** CORNERSTONE NATURAL GAS INC
- **Classification:** Company
- **Industry (SIC):** 4922 — Natural Gas Transmission
- **Headquarters:** Dallas, TX, United States
- **Incorporated in:** DE
- **Fiscal year end:** December 31
- **SEC CIK:** 0000725625

## About

CORNERSTONE NATURAL GAS INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0000725625, and its reported industry is Natural Gas Transmission. The retained history contains 12 filings, including 10-Q filed on 1996-05-06. Each filing retains its accession, filing date and original SEC document link. This historical evidence does not establish current registration, listing, ownership or financial condition.

## Recent SEC filings

- Form 10-Q — filed 1996-05-06 — period 1996-03-31 — 10-Q
- Form 10-K/A — filed 1996-04-26 — period 1995-12-31 — AMENDMENT NO. 1 TO FORM 10-K
- Form 10-K — filed 1996-02-27 — period 1995-12-31 — FORM 10-K
- Form 10-Q — filed 1995-11-13 — period 1995-09-30 — 10-Q
- Form 10-Q — filed 1995-08-04 — period 1995-06-30 — 10-Q
- Form 8-K — filed 1995-06-20 — period 1995-06-05 — FORM 8-K (TO COME)
- Form 10-Q — filed 1995-05-15 — period 1995-03-31 — 10-Q
- Form DEF 14A — filed 1995-04-13 — period 1995-05-15 — NOTICE & PROXY
- Form 10-K — filed 1995-03-15 — period 1994-12-31 — FORM 10-K
- Form 8-K — filed 1995-01-20 — period 1995-01-12 — FORM 8-K
- Form 10-Q — filed 1994-11-10 — period 1994-09-30 — 10-Q
- Form 10-Q — filed 1994-08-12 — period 1994-06-30 — FORM 10-Q

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Updated: 2026-10-23T22:26:34Z

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