Atmos Energy Corporation (ATO) Insider Trading

Last 12 months

Insiders bought $50k and sold $77k on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Director Sean Donohue sold $77k on Dec 3, 2025, 34% of their stake, outside a plan.

Net open-market

−$27k

1 buy · 1 sale

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

1 / 1

executives and directors

Last open-market buy

Aug 2026

Aug 11, 2026

Get an email when ATO's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 11	William James Ware Director	Bought	300	$167.59	$50k	1.2%	Form 4
Dec 3, 2025	Sean Donohue Director	SoldNo plan	450	$171.15	$77k	34%	Form 4
May 14, 2025	Kim R Cocklin Director	Sold10b5-1 plan	15,000	$150.98	$2.26M	8.0%	Form 4
Nov 11, 2024	Edward Geiser Director	Bought	2,500	$144.89	$362k	2451%	Form 4

Aug 11
William James Ware
Director · bought 300 at $167.59
$50k
1.2% of stake
Dec 3, 2025No plan
Sean Donohue
Director · sold 450 at $171.15
$77k
34% of stake
May 14, 202510b5-1 plan
Kim R Cocklin
Director · sold 15,000 at $150.98
$2.26M
8.0% of stake
Nov 11, 2024
Edward Geiser
Director · bought 2,500 at $144.89
$362k
2451% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ATO, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in ATO's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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