ONE Gas, Inc. — Investor Relations & Filings
ONE Gas, Inc. is a regulated natural gas utility that provides natural gas distribution services. The company serves more than 2.3 million residential, commercial, industrial, transportation, and wholesale customers across Kansas, Oklahoma, and Texas. It operates through three divisions: Kansas Gas Service, the largest natural gas distributor in Kansas; Oklahoma Natural Gas, the largest in Oklahoma; and Texas Gas Service, the third largest in Texas by customer count. Key markets include Oklahoma City, Tulsa, Kansas City, Wichita, Topeka, Austin, and El Paso.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| S-8 | 2026-05-21 | English | |
| 8-K - ONE Gas, Inc. (0001587732) (Filer) | 2026-05-12 | English | |
| 8-K - ONE Gas, Inc. (0001587732) (Filer) | 2026-04-07 | English | |
| ARS - ONE Gas, Inc. (0001587732) (Filer) | 2026-04-01 | English | |
| 4 - ONE GAS, INC. (0001587732) (Filer) | 2026-02-25 | English | |
| 8-K - ONE GAS, INC. (0001587732) (Filer) | 2026-02-24 | English |
Market data
Market data not available
Price history
Peer group · Manufacture of gas; distribution of gaseous fuels through mains
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ONE Gas, Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31040/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31040 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31040 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31040 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31040}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for ONE Gas, Inc. (id: 31040)"
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