Company · ATO · CIK 731802

Atmos Energy Corp (ATO) SEC filings and CIK.

ATO’s SEC Central Index Key (CIK) is 0000731802, or 731802 without leading zeros. The SEC’s ticker file lists it as ATMOS ENERGY CORP.

Ticker: ATO
CIK: 0000731802
Other tickers: None
Insider transactions, Q3 2026: 3

Insider trading

In Q3 2026, insiders at Atmos Energy Corp reported 3 non-derivative transactions on 6 Forms 3, 4 and 5, including 1 open-market purchases and 0 sales. See every ATO insider transaction →

Recent filings we observed

From our record of EDGAR’s latest-filings feed and sampled daily indexes. Not a complete filing history; use the filings API for that.
Filed	Form	Accession
2026-11-09	4/A	0000731802-26-000147
2026-11-09	3/A	0000731802-26-000145

Get ATO SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=731802&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/731802" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/731802?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Atmos Energy Corp on SEC.gov

Questions

What is ATO’s CIK number?

ATO’s SEC Central Index Key (CIK) is 0000731802, or 731802 without leading zeros. The SEC’s ticker file lists it as ATMOS ENERGY CORP.

How do I find Atmos Energy Corp’s 10-K?

Request /api/v1/filings?cik=731802&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/ato.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.