Atmos Energy Corporation (ATO) Shareholders & Insider Trades
Atmos Energy shareholders at a glance
The largest holder of Atmos Energy stock is BlackRock Advisors LLC, with 12.5 million shares (7.46% of the company), worth about $2.07 billion as of September 25, 2026. The 10 largest holders together own 45.2%.
In Q2 2026, 1,066 institutional holdings reports listed shares worth $28.30 billion.
Insiders reported 44 transactions in the last two years: 2 sales worth $2.34 million and 1 purchase. The newest one on file is from May 1, 2026 (Faulk Michelle, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 1, 2026.
Atmos Energy Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Atmos Energy shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 12.5 million | 7.46% | $2.1B |
| State Street Corporation | 11.4 million | 6.82% | $1.9B |
| Vanguard Capital Management LLC | 10.9 million | 6.52% | $1.8B |
| Vanguard Portfolio Management LLC | 9.4 million | 5.61% | $1.6B |
| Wellington Trust Co., NA | 9.2 million | 5.50% | $1.5B |
| Capital Research & Management Co. (International Investors) | 7.5 million | 4.48% | $1.2B |
| Geode Capital Management LLC | 4.5 million | 2.69% | $746.0M |
| Merrill Lynch International | 4.2 million | 2.50% | $695.0M |
| Invesco Advisers, Inc. | 3.2 million | 1.90% | $527.0M |
| Eaton Vance Management | 2.9 million | 1.72% | $476.0M |
As of September 25, 2026.
Atmos Energy institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,066 | – | $28.3B |
| Q1 2026 | 1,038 | 160.0 million | $29.6B |
| Q4 2025 | 1,006 | 163.0 million | $27.3B |
| Q3 2025 | 940 | 160.0 million | $27.3B |
| Q2 2025 | 896 | 161.0 million | $24.8B |
| Q1 2025 | 891 | 158.0 million | $24.5B |
| Q4 2024 | 840 | 157.0 million | $21.8B |
| Q3 2024 | 777 | 152.0 million | $21.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Atmos Energy insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Faulk Michelle | May 1, 2026 | Officer | Conversion of Exercise of derivative security at price 189.74 per share. | $33,204 |
| Hartsfield Karen E | May 1, 2026 | Officer | Conversion of Exercise of derivative security at price 189.74 per share. | $534,118 |
| Mcdill John S. | May 1, 2026 | Officer | Conversion of Exercise of derivative security at price 189.74 per share. | $534,118 |
| Forsythe Christopher T | May 1, 2026 | Chief Financial Officer | -- | – |
| Robbins John Matt | May 1, 2026 | Officer | Conversion of Exercise of derivative security at price 189.74 per share. | $534,118 |
| Akers John K | May 1, 2026 | Chief Executive Officer | Conversion of Exercise of derivative security at price 189.74 per share. | $3.2M |
| Garza Rafael G | Apr 1, 2026 | Director | Stock Award(Grant) at price 185.09 per share. | $11,105 |
| Ale John C | Mar 6, 2026 | Director | Conversion of Exercise of derivative security at price 184.73 per share. | $199,878 |
| Compton Kelly H. | Mar 6, 2026 | Director | Conversion of Exercise of derivative security at price 184.73 per share. | $199,878 |
| Cocklin Kim R | Mar 6, 2026 | Director | Conversion of Exercise of derivative security at price 184.73 per share. | $199,878 |
| Sampson Richard A | Feb 4, 2026 | Director | -- | – |
| Pulliam Jessica Bateman | Jan 2, 2026 | General Counsel | Conversion of Exercise of derivative security at price 168.23 per share. | $420,575 |
Newest 12 of 44 insider transactions in the last two years.
Questions and answers
Who owns the most Atmos Energy stock?
BlackRock Advisors LLC, with 7.46% of the company (as of September 25, 2026). Next: State Street Corporation (6.82%) and Vanguard Capital Management LLC (6.52%).
How many institutions own Atmos Energy stock?
1,066 institutional holdings reports listed Atmos Energy shares in Q2 2026 worth $28.30 billion.
Are Atmos Energy insiders buying or selling the stock?
In the last two years insiders reported 2 sales and 1 purchase (44 transactions in all); the newest on file is from May 1, 2026.
