What SEC filings does Atmos Energy Corporation submit to the SEC?

Atmos Energy Corporation (ATO) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about ATO?

A Form 4 for ATO discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Atmos Energy Corporation?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for ATO?

The 10-K is Atmos Energy Corporation's annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all ATO SEC filings directly on EDGAR?

You can view all historical Atmos Energy Corporation filings on the SEC EDGAR company page for ATO. Each filing card on this page links directly to the original SEC document.

How often does Atmos Energy Corporation file with the SEC?

Atmos Energy Corporation files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling ATO shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

ATO SEC Filing News — Atmos Energy Corporation

Latest SEC filings for Atmos Energy Corporation (ATO) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-09.

Atmos Energy Corporation, together with its subsidiaries, engages in the regulated natural gas distribution, and pipeline and storage businesses in the United States. It operates through two segments, Distribution, and Pipeline and Storage. The Distribution segment is involved in the regulated natural gas distribution and related sales operations in eight states. This segment distributes natural gas to approximately 3.4 million residential, commercial, public authority, and industrial customers;…

Sector: Utilities Industry: Utilities - Regulated Gas Market Cap: $27.8B CIK: 731802

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for ATO currently lean bullish. Of the 20 displayed SEC filing records, 1 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 11 insider transactions (Form 4) in this period.

ATO Filing Activity Snapshot 2026-05-04 — 2026-10-09

Insider Transactions (Form 4)

1 buy vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$50.3K

WARE WILLIAM JAMES (Director) · 2026-08-12

300 shares · Form 4

Insider Transactions 11 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 11 filings in this group are Form 4s for Atmos Energy Corporation.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 11 insider filings shown, the breakdown is 5 compensation award, 4 option exercise, 1 gift and 1 open-market purchase. 1 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×5: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Option exercise ×4: The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Gift ×1: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Open-market purchase ×1: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Form 4 Compensation award Tax / Compensation Filing 2026-10-05

ATO insider Form 4 filed for equity award, exercise, or tax withholding

Geiser Edward (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Phantom Deferred Compensation	224	$155.79	$34.9K

Filing: Form 4 (Insider Transaction) Insider: Geiser Edward (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-05

ATO insider Form 4 filed for equity award, exercise, or tax withholding

GARZA RAFAEL G (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	77	$155.79	$12.0K

Filing: Form 4 (Insider Transaction) Insider: GARZA RAFAEL G (Director) Shares: 77

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-17

ATO insider Form 4 filed for equity award, exercise, or tax withholding

ROBBINS J MATT (SR VP, HUMAN RESOURCES) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	1,500	—	—

Filing: Form 4 (Insider Transaction) Insider: ROBBINS J MATT (SR VP, HUMAN RESOURCES) Shares: 1,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-02

ATO insider Form 4 filed for equity award, exercise, or tax withholding

Jeffries James Henry IV (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Phantom Stock Units	1,000	$166.96	$167.0K

Filing: Form 4 (Insider Transaction) Insider: Jeffries James Henry IV (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-08-12

ATO insider WARE WILLIAM JAMES (Director) bought 300 shares (~$50.3K)

WARE WILLIAM JAMES, listed as Director at ATMOS ENERGY CORP, reported an open-market purchase of 300 ATO shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	300	$167.59	$50.3K

Filing: Form 4 (Insider Transaction) Insider: WARE WILLIAM JAMES (Director) Shares: 300 Est. Value: $50.3K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-02

ATO insider Form 4 filed for equity award, exercise, or tax withholding

Geiser Edward (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Phantom Deferred Compensation	187	$172.92	$32.3K

Filing: Form 4 (Insider Transaction) Insider: Geiser Edward (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-02

ATO insider Form 4 filed for equity award, exercise, or tax withholding

GARZA RAFAEL G (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	65	$172.92	$11.2K

Filing: Form 4 (Insider Transaction) Insider: GARZA RAFAEL G (Director) Shares: 65

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-05-04

ATO insider Form 4 filed for equity award, exercise, or tax withholding

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	2,815	$189.74	$534.1K
`F`	Tax withholding on vested shares	1,042	$189.74	$197.7K
`M`	Option exercise derivative · Restricted Stock Unit	2,815	—	—

Filing: Form 4 (Insider Transaction) Insider: ROBBINS J MATT (SR VP, HUMAN RESOURCES) Shares: 3,857

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-05-04

ATO insider Form 4 filed for equity award, exercise, or tax withholding

MCDILL JOHN S (SR VP, UTILITY OPERATIONS) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	2,815	$189.74	$534.1K
`F`	Tax withholding on vested shares	1,042	$189.74	$197.7K
`M`	Option exercise derivative · Restricted Stock Unit	2,815	—	—

Filing: Form 4 (Insider Transaction) Insider: MCDILL JOHN S (SR VP, UTILITY OPERATIONS) Shares: 3,857

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-05-04

ATO insider Form 4 filed for equity award, exercise, or tax withholding

HARTSFIELD KAREN E (Senior Advisor) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	2,815	$189.74	$534.1K
`F`	Tax withholding on vested shares	1,042	$189.74	$197.7K
`M`	Option exercise derivative · Restricted Stock Unit	2,815	—	—

Filing: Form 4 (Insider Transaction) Insider: HARTSFIELD KAREN E (Senior Advisor) Shares: 3,857

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-05-04

ATO insider Form 4 filed for equity award, exercise, or tax withholding

Forsythe Christopher T (SR VICE PRESIDENT & CFO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	3,970	$189.74	$753.3K
`F`	Tax withholding on vested shares	1,563	$189.74	$296.6K
`M`	Option exercise derivative · Restricted Stock Unit	3,970	—	—

Filing: Form 4 (Insider Transaction) Insider: Forsythe Christopher T (SR VICE PRESIDENT & CFO) Shares: 5,533

View on SEC EDGAR → Open Filing Document →

Material Events 7 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 7 in this period for Atmos Energy Corporation. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-10-09