Stocks › ATO
ATMOS ENERGY CORP
ATO·NYSE·
United States·USD
United States·USD$159.74
+1.69 (+1.07%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
ATO
ATMOS ENERGY CORP · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ATOS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ATO by members of U.S. Congress · 19 on record · 3 in the last 12 months
Whale Activity
Position changes in ATO reported for 2026-06-30 by 17 tracked institutional filers
- Increased7
- New3
- Held0
- Decreased1
- Closed0
- No prior filing6
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 15.2M | $2.62B | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 10.9M | $1.88B | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 9.4M | $1.61B | increased |
| CITADEL ADVISORS LLC | 1.7M | $299.1M | increased |
| Point72 Asset Management, L.P. | 1.4M | $234.5M | new |
| SFMG, LLC | 1.1M | $182.7M | — |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | 637.7K | $109.9M | — |
| RENAISSANCE TECHNOLOGIES LLC | 447.9K | $77.2M | increased |
| Energy Income Partners, LLC | 410.6K | $70.7M | increased |
| MILLENNIUM MANAGEMENT LLC | 272.8K | $47.0M | increased |
| DEARBORN PARTNERS LLC | 188.3K | $32.4M | — |
| Magellan Asset Management Ltd | 186.9K | $32.2M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ATO insiders, by quarter · Form 4
Recent Insider Transactions
1,078 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| WARE WILLIAM JAMESDirector · Director | Purchase | +300 | $167.59 | $50K | Aug 11, 2026 | Form 4 ↗ |
| ROBBINS J MATTSR VP, HUMAN RESOURCES | Tax withholding | −1,042 | $189.74 | $198K | May 2, 2026 | Form 4 ↗ |
| ROBBINS J MATTSR VP, HUMAN RESOURCES | Option exercise | +2,815 | $189.74 | $534K | May 2, 2026 | Form 4 ↗ |
| MCDILL JOHN SSR VP, UTILITY OPERATIONS | Tax withholding | −1,042 | $189.74 | $198K | May 2, 2026 | Form 4 ↗ |
| MCDILL JOHN SSR VP, UTILITY OPERATIONS | Option exercise | +2,815 | $189.74 | $534K | May 2, 2026 | Form 4 ↗ |
| HARTSFIELD KAREN ESenior Advisor | Tax withholding | −1,042 | $189.74 | $198K | May 2, 2026 | Form 4 ↗ |
| HARTSFIELD KAREN ESenior Advisor | Option exercise | +2,815 | $189.74 | $534K | May 2, 2026 | Form 4 ↗ |
| Forsythe Christopher TSR VICE PRESIDENT & CFO | Tax withholding | −1,563 | $189.74 | $297K | May 2, 2026 | Form 4 ↗ |
| Forsythe Christopher TSR VICE PRESIDENT & CFO | Option exercise | +3,970 | $189.74 | $753K | May 2, 2026 | Form 4 ↗ |
| FAULK MICHELLEVice President & Controller | Tax withholding | −70 | $189.74 | $13K | May 2, 2026 | Form 4 ↗ |
| FAULK MICHELLEVice President & Controller | Option exercise | +175 | $189.74 | $33K | May 2, 2026 | Form 4 ↗ |
| AKERS JOHN KPRESIDENT & CEO · Director | Tax withholding | −6,235 | $187.74 | $1.2M | May 2, 2026 | Form 4 ↗ |
| AKERS JOHN KPRESIDENT & CEO · Director | Option exercise | +16.9K | $189.74 | $3.2M | May 2, 2026 | Form 4 ↗ |
| GARZA RAFAEL GDirector | Grant / award | +60 | $185.09 | $11K | Apr 1, 2026 | Form 4 ↗ |
| COMPTON KELLY HDirector | Option exercise | +1,082 | $184.73 | $200K | Mar 7, 2026 | Form 4 ↗ |
| COCKLIN KIM RDirector | Option exercise | +1,082 | $184.73 | $200K | Mar 7, 2026 | Form 4 ↗ |
| Ale John C.Director | Option exercise | +1,082 | $184.73 | $200K | Mar 7, 2026 | Form 4 ↗ |
| Sampson Richard ADirector | Conversion | +685 | $171.62 | $118K | Feb 4, 2026 | Form 4 ↗ |
| Sampson Richard ADirector | Conversion | +30.8K | $171.62 | $5.3M | Feb 4, 2026 | Form 4 ↗ |
| BATEMAN JESSICA WALKERSr VP, Gen Counsel, Corp Sec'y | Tax withholding | −1,042 | $168.23 | $175K | Jan 2, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ATO · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 5.3M | $912.8M | 0.04% | Jun 30, 2026 |
| VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS | 4.3M | $745.1M | 0.04% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 3.8M | $659.4M | 0.35% | Jun 30, 2026 |
| American Funds Fundamental Investors | 3.1M | $536.9M | 0.30% | Jun 30, 2026 |
| State Street(R) Utilities Select Sector SPDR(R) ETF SELECT SECTOR SPDR TRUST | 2.7M | $467.9M | 2.02% | Jun 30, 2026 |
| American Mutual Fund | 2.4M | $449.7M | 0.39% | Apr 30, 2026 |
| VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS | 2.4M | $417.7M | 0.62% | Jun 30, 2026 |
| VANGUARD EQUITY INCOME FUND VANGUARD FENWAY FUNDS | 2.4M | $411.2M | 0.63% | Jun 30, 2026 |
| iShares Core S&P 500 ETF iShares Trust | 2.3M | $395.5M | 0.04% | Jun 30, 2026 |
| Fidelity 500 Index Fund Fidelity Concord Street Trust | 2.1M | $358.1M | 0.04% | May 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list ATO's shares (CUSIP 049560105), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Wellington Management Company LLPSCHEDULE 13G/A · passive (13G) · 9.2M shares5.1%
Aug 13, 2026 · ↗ - Wellington Investment Advisors Holdings LLPSCHEDULE 13G/A · passive (13G) · 9.2M shares5.5%
Aug 13, 2026 · ↗ - Wellington Group Holdings LLPSCHEDULE 13G/A · passive (13G) · 9.2M shares5.5%
Aug 13, 2026 · ↗ - Wellington Management Group LLPSCHEDULE 13G/A · passive (13G) · 9.2M shares5.5%
Aug 13, 2026 · ↗ - BlackRock, Inc.SCHEDULE 13G/A · passive (13G) · 14.5M shares8.7%
Jul 27, 2026 · ↗ - Capital International InvestorsSCHEDULE 13G/A · passive (13G) · 7.7M shares4.7%
May 14, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming atmos energy as client
- ALPINE GROUP PARTNERS, LLC.ATMOS ENERGY CORPORATION · 2026 Q2 · FUE, ENG, UTI, TRA$60K
Filing ↗ - DS2 GROUP, LLCATMOS ENERGY · 2026 Q2 · ENG$20K
Filing ↗ - ALPINE GROUP PARTNERS, LLC.ATMOS ENERGY CORPORATION · 2026 Q1 · FUE, ENG, UTI, TRA$60K
Filing ↗ - DS2 GROUP, LLCATMOS ENERGY · 2026 Q1 · ENG$20K
Filing ↗ - ALPINE GROUP PARTNERS, LLC.ATMOS ENERGY CORPORATION · 2025 Q4 · FUE, ENG, UTI, TRA$60K
Filing ↗
Government Contracts
Federal awards to atmos energy · USAspending
$1.1MAwarded · 15 contracts on record
- Department of the TreasuryWCF NATURAL GAS$540K
Sep 27, 2024 · ↗ - Department of JusticeNATURAL GAS SERVICE FOR FY 26$254K
Oct 1, 2025 · ↗ - Department of JusticeFCC POLLOCK NATURAL GAS UTILITY FY27 CONTRACT # 47PA0419D0007$0
Oct 1, 2026 · ↗ - Department of JusticeATMOS TRANSPORT GAS FY26 APR-JUNE$11K
Apr 1, 2026 · ↗ - Department of JusticeATMOS TRANSPORT GAS FY27 OCT$0
Oct 1, 2026 · ↗ - Department of JusticeFY 2026 GAS SERVICES$113K
Oct 1, 2025 · ↗ - Department of JusticeFPC BRYAN NATURAL GAS FY26 SEPTEMBER 2026 CONTRACT#47PA0419D0007$4K
Sep 1, 2026 · ↗ - Department of JusticeFPC BRYAN NATURAL GAS FY26 AUGUST 2026 CONTRACT#47PA0419D0007$4K
Aug 1, 2026 · ↗
U.S. Patents
Recent USPTO applications naming ATMOS ENERGY CORP
No USPTO patent applications found for ATMOS ENERGY CORP.
Annual Financials
From ATO's 10-K filings · XBRL
No annual XBRL figures on record for ATO. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 3-for-2Stock splitMay 17, 1994
- 2-for-1Stock splitJun 13, 1985
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 5.02, 7.01, 9.01Officer / director change · Reg FD disclosureAug 10, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsAug 5, 2026
EDGAR ↗ - 8-K · Items 1.01, 9.01Material agreementJun 18, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsJun 18, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 6, 2026
EDGAR ↗
About ATMOS ENERGY CORP
From SEC EDGAR company records
Industry (SIC 4924)Natural Gas Distribution
SectorUtilities
HeadquartersDALLAS, TX
IncorporatedTX
SEC CIK0000731802 ↗