Atmos Energy ATO Insider Ownership

Updated Oct 11, 2026

In the last 12 months, insiders at Atmos Energy made open-market purchases of $50,278 (300 shares) and open-market sales of $77,018 (450 shares).

• Among ATO's insiders, William James Ware (Director) was the top open-market buyer in the past 12 months, with $50,278 of stock purchased (300 shares) and the latest purchase on August 11, 2026.
• On the sell side, Sean Donohue (Director) led open-market sales of Atmos Energy stock over the past 12 months with $77,018 (450 shares), most recently on December 3, 2025.
• In transactions other than open-market trades, Atmos Energy insiders received 268 shares in stock awards, acquired 104.52K shares through option exercises and conversions, gave up 27.9K shares to cover taxes or exercise prices and gave away 3.44K shares as gifts over the past 12 months.
• Per Business Quant data, Atmos Energy insiders hold 621.39K shares in total based on their latest Form 4 filings.
• Direct holdings account for 619.95K shares (99.77%) of ATO's insider total, and indirect holdings through trusts, partnerships and family members for 1.44K shares (0.23%).
• The insider holdings in Atmos Energy belong to 18 insiders who have reported on Form 4 within the past two years.
• Atmos Energy's top three insider holders by shares held are Kim R. Cocklin (Director, 173.71K shares), John K. Akers (President & CEO, 135.98K shares) and Richard K. Gordon (Director, 81.98K shares).
• The holding of Kim R. Cocklin makes up 27.96% of all shares held by Atmos Energy insiders.
• Institutional holders reported 96.39% of Atmos Energy's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 0.37%, and other investors, including the public, hold the remaining 3.24%.
• Over the past 12 months, 20 insiders reported transactions in Atmos Energy stock in 46 Form 4 filings.
• These insider figures for Atmos Energy are based on Form 4 filings through October 5, 2026.