ChartRow logo
PeersNICNPEDEXCSPYQQQ
Share this page

ATO SEC filings (2026)

CIK 731802 · Natural Gas Distribution (SIC 4924) · incorporated in TX · fiscal year ends in September

2,144 filings on EDGAR since 1994 · 33 annual, 100 quarterly, 307 current · financial statements · earnings

Latest 10-K
Nov 14, 2025
fiscal year to Sep 30, 2025
Latest 10-Q
Aug 5, 2026
quarter to Jun 30, 2026
Latest 8-K
Oct 9, 2026
Material definitive agreement
Last earnings release
Aug 5, 2026
$1.43 vs $1.34 · ▼ 0.1%
Filings on file
2,144
since 1994, 1,319 insider forms

What happened, last 12 months#

Every earnings release with its print, every report with its quarter, the other 8-Ks by the headline of the press release they furnish or by their items, the proxy statements, and each day an insider bought or sold — newest first, each line opening the filing on EDGAR. The index by form and year follows.

October 2026

August 2026

June 2026

May 2026

March 2026

February 2026

December 2025

November 2025

Insider transactions#

What officers, directors and 10% holders reported on Forms 4 and 5 over the last 13 months, from the documents themselves: one insider’s trades of one kind on one day are one row, with the shares, the price range and the total as filed. Open-market buys and sells first; awards, exercises, tax withholding, gifts and employee-plan purchases are grouped below them.

Over the last 13 months insiders sold nothing and bought $50K in 1 purchase; 58 other transactions (awards, exercises, tax withholding, gifts and plan purchases).

DateInsider
Aug 11, 2026Form 4WARE WILLIAM JAMESDirectorBought · $50K · 300 sh
Awards, exercises, withholding and plan purchases · 58 transactions
DateInsider
Oct 1, 2026Form 4Geiser EdwardDirectorAward · $35K · 224.661 sh
Oct 1, 2026Form 4GARZA RAFAEL GDirectorAward · $12K · 77 sh
Sep 15, 2026Form 4ROBBINS J MATTSR VP, HUMAN RESOURCESGift · $0 · 1,500 sh
Sep 1, 2026Form 4Jeffries James Henry IVDirectorAward · Phantom Stock Units · $167K · 1,000 sh
Jul 1, 2026Form 4Geiser EdwardDirectorAward · $33K · 187.946 sh
Jul 1, 2026Form 4GARZA RAFAEL GDirectorAward · $11K · 65 sh
May 2, 2026Form 4AKERS JOHN KPRESIDENT & CEO · DirectorExercise or conversion · $3.2M · 16,850 sh
May 2, 2026Form 4AKERS JOHN KPRESIDENT & CEO · DirectorTax withholding · $1.2M · 6,235 sh
May 2, 2026Form 4Forsythe Christopher TSR VICE PRESIDENT & CFOExercise or conversion · $753K · 3,970 sh
May 2, 2026Form 4HARTSFIELD KAREN ESenior AdvisorExercise or conversion · $534K · 2,815 sh
May 2, 2026Form 4MCDILL JOHN SSR VP, UTILITY OPERATIONSExercise or conversion · $534K · 2,815 sh
May 2, 2026Form 4ROBBINS J MATTSR VP, HUMAN RESOURCESExercise or conversion · $534K · 2,815 sh
May 2, 2026Form 4Forsythe Christopher TSR VICE PRESIDENT & CFOTax withholding · $297K · 1,563 sh
May 2, 2026Form 4HARTSFIELD KAREN ESenior AdvisorTax withholding · $198K · 1,042 sh
May 2, 2026Form 4MCDILL JOHN SSR VP, UTILITY OPERATIONSTax withholding · $198K · 1,042 sh
May 2, 2026Form 4ROBBINS J MATTSR VP, HUMAN RESOURCESTax withholding · $198K · 1,042 sh
May 2, 2026Form 4FAULK MICHELLEVice President & ControllerExercise or conversion · $33K · 175 sh
May 2, 2026Form 4FAULK MICHELLEVice President & ControllerTax withholding · $13K · 70 sh
May 2, 2026Form 4AKERS JOHN KPRESIDENT & CEO · DirectorExercise or conversion · Restricted Stock Unit · $0 · 16,850 sh
May 2, 2026Form 4Forsythe Christopher TSR VICE PRESIDENT & CFOExercise or conversion · Restricted Stock Unit · $0 · 3,970 sh
May 2, 2026Form 4HARTSFIELD KAREN ESenior AdvisorExercise or conversion · Restricted Stock Unit · $0 · 2,815 sh
May 2, 2026Form 4MCDILL JOHN SSR VP, UTILITY OPERATIONSExercise or conversion · Restricted Stock Unit · $0 · 2,815 sh
May 2, 2026Form 4ROBBINS J MATTSR VP, HUMAN RESOURCESExercise or conversion · Restricted Stock Unit · $0 · 2,815 sh
May 2, 2026Form 4FAULK MICHELLEVice President & ControllerExercise or conversion · Restricted Stock Unit · $0 · 175 sh
Apr 1, 2026Form 4Geiser EdwardDirectorAward · $33K · 175.59 sh
Apr 1, 2026Form 4GARZA RAFAEL GDirectorAward · $11K · 60 sh
Mar 7, 2026Form 4Ale John C.DirectorExercise or conversion · $200K · 1,082 sh
Mar 7, 2026Form 4COCKLIN KIM RDirectorExercise or conversion · $200K · 1,082 sh
Mar 7, 2026Form 4COMPTON KELLY HDirectorExercise or conversion · $200K · 1,082 sh
Mar 7, 2026Form 4Ale John C.DirectorExercise or conversion · Restricted Stock Unit · $0 · 1,082 sh
Mar 7, 2026Form 4COCKLIN KIM RDirectorExercise or conversion · Restricted Stock Unit · $0 · 1,082 sh
Mar 7, 2026Form 4COMPTON KELLY HDirectorExercise or conversion · Restricted Stock Unit · $0 · 1,082 sh
Mar 6, 2026Form 4COCKLIN KIM RDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4Coogler Mitzi HDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4DONOHUE SEANDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4GARZA RAFAEL GDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4Geiser EdwardDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4QUINN NANCY KDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4TOLIVER TELISADirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4WARE WILLIAM JAMESDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4YOHO FRANK HDirectorAward · Phantom Stock Units · $170K · 920.26 sh
Mar 6, 2026Form 4Ale John C.DirectorAward · Restricted Stock Unit · $170K · 920 sh
Mar 6, 2026Form 4COMPTON KELLY HDirectorAward · Restricted Stock Unit · $170K · 920 sh
Feb 4, 2026Form 4Sampson Richard ADirectorExercise or conversion · $5.4M · 31,493 sh
Feb 4, 2026Form 4Sampson Richard ADirectorExercise or conversion · Phantom Stock Units · $0 · 30,808 sh
Feb 4, 2026Form 4Sampson Richard ADirectorExercise or conversion · $0 · 685 sh
Feb 3, 2026Form 4AKERS JOHN KPRESIDENT & CEO · DirectorAward · Restricted Stock Unit · $1.3M · 7,760 sh
Feb 3, 2026Form 4Forsythe Christopher TSR VICE PRESIDENT & CFOAward · Restricted Stock Unit · $319K · 1,900 sh
Feb 3, 2026Form 4BATEMAN JESSICA WALKERSr VP, Gen Counsel, Corp Sec'yAward · Restricted Stock Unit · $208K · 1,240 sh
Feb 3, 2026Form 4HARTSFIELD KAREN ESenior AdvisorAward · Restricted Stock Unit · $208K · 1,240 sh
Feb 3, 2026Form 4MCDILL JOHN SSR VP, UTILITY OPERATIONSAward · Restricted Stock Unit · $208K · 1,240 sh
Feb 3, 2026Form 4ROBBINS J MATTSR VP, HUMAN RESOURCESAward · Restricted Stock Unit · $208K · 1,240 sh
Feb 3, 2026Form 4FAULK MICHELLEVice President & ControllerAward · Restricted Stock Unit · $44K · 260 sh
Jan 2, 2026Form 4BATEMAN JESSICA WALKERSr VP, Gen Counsel, Corp Sec'yExercise or conversion · $421K · 2,500 sh
Jan 2, 2026Form 4BATEMAN JESSICA WALKERSr VP, Gen Counsel, Corp Sec'yTax withholding · $175K · 1,042 sh
Jan 2, 2026Form 4Geiser EdwardDirectorAward · $33K · 193.188 sh
Jan 2, 2026Form 4GARZA RAFAEL GDirectorAward · $11K · 66 sh
Jan 2, 2026Form 4BATEMAN JESSICA WALKERSr VP, Gen Counsel, Corp Sec'yExercise or conversion · Restricted Stock Unit · $0 · 2,500 sh

Reports and proxy statements#

Annual reports (10-K, 20-F, 40-F), quarterly reports (10-Q), current reports (8-K, 6-K) and proxy statements, newest first. An 8-K that furnishes a press release is headed by the release’s headline, its items beneath; any other 8-K is described by its items. A form opens the press release where there is one, else the document on EDGAR, or the filing’s index where it furnishes other exhibits.

2026 · 13 filings
FiledWhat it is
Oct 9, 20268-KMaterial definitive agreement
Oct 9, 20268-KOther events
Aug 10, 20268-KJames H. Jeffries IV to Board of DirectorsDirectors or officers; compensation; Regulation FD disclosure
Aug 5, 202610-QQuarterly report, Q3 2026 — revenue $879.1M (+5% y/y), net income $242.7M, EPS $1.43
Aug 5, 20268-KEarnings release — EPS $1.43 vs $1.34 est. (+6.7%); revenue $879.1M (+5% y/y) 0.1%
Jun 18, 20268-KMaterial definitive agreement
Jun 18, 20268-KOther events
May 6, 202610-QQuarterly report, Q2 2026 — revenue $1.96B (+1% y/y), net income $581.9M, EPS $3.47
May 6, 20268-KEarnings release — EPS $3.47 vs $3.37 est. (+3.0%); revenue $1.96B (+1% y/y) 1.6%
Mar 30, 20268-KMaterial definitive agreement; New financial obligation
Feb 10, 20268-KCharter, bylaws or fiscal-year change; Shareholder vote results
Feb 3, 202610-QQuarterly report, Q1 FY2026 — revenue $1.34B (+14% y/y), net income $403.0M, EPS $2.44
Feb 3, 20268-KEarnings release — EPS $2.44 vs $2.41 est. (+1.2%); revenue $1.34B (+14% y/y) 1.8%
2025 · 18 filings
FiledWhat it is
Dec 19, 2025ARSAnnual report to shareholders
Dec 19, 2025DEFA14AAdditional proxy materials
Dec 19, 2025DEF 14AProxy statement
Dec 9, 2025PRE 14APreliminary proxy statement
Nov 14, 202510-KAnnual report, FY2025 — revenue $4.70B (+13% y/y), net income $1.20B, EPS $7.46
Nov 5, 20258-KEarnings release — EPS $1.07 vs $1.01 est. (+5.9%); revenue $737.5M (+12% y/y) 1.7%
Oct 1, 20258-KMaterial definitive agreement
Oct 1, 20258-KOther events
Aug 6, 202510-QQuarterly report, Q3 2025 — revenue $838.8M (+20% y/y), net income $186.4M, EPS $1.16
Aug 6, 20258-KEarnings release — EPS $1.16 vs $1.17 est. (−0.8%); revenue $838.8M (+20% y/y) 3.6%
Jun 26, 20258-KMaterial definitive agreement
Jun 26, 20258-KOther events
May 7, 202510-QQuarterly report, Q2 2025 — revenue $1.95B (+18% y/y), net income $485.6M, EPS $3.03
May 7, 20258-KEarnings release — EPS $3.03 vs $2.92 est. (+3.8%); revenue $1.95B (+18% y/y) 0.9%
Apr 4, 20258-KMaterial definitive agreement; New financial obligation
Feb 11, 20258-KShareholder vote results
Feb 4, 202510-QQuarterly report, Q1 FY2025 — revenue $1.18B (+2% y/y), net income $351.9M, EPS $2.23
Feb 4, 20258-KEarnings release — EPS $2.23 vs $2.20 est. (+1.4%); revenue $1.18B (+2% y/y) 1.9%
2024 · 22 filings
FiledWhat it is
Dec 20, 2024ARSAnnual report to shareholders
Dec 20, 2024DEFA14AAdditional proxy materials
Dec 20, 2024DEF 14AProxy statement
Dec 5, 20248-KDirectors or officers; compensation; Regulation FD disclosure
Dec 3, 20248-KMaterial definitive agreement
Nov 18, 202410-KAnnual report, FY2024 — revenue $4.17B (−3% y/y), net income $1.04B, EPS $6.83
Nov 6, 20248-KEarnings release — EPS $0.86 vs $0.84 est. (+2.4%); revenue $657.9M (+12% y/y) 1.8%
Oct 1, 20248-KMaterial definitive agreement
Oct 1, 20248-KOther events
Sep 24, 20248-KDirectors or officers; compensation
Sep 16, 20248-KDirectors or officers; compensation
Aug 7, 202410-QQuarterly report, Q3 2024 — revenue $701.5M (+6% y/y), net income $165.6M, EPS $1.08
Aug 7, 20248-KEarnings release — EPS $1.08 vs $1.05 est. (+2.9%); revenue $701.5M (+6% y/y) 0.9%
Jun 21, 20248-KMaterial definitive agreement
Jun 21, 20248-KOther events
May 8, 20248-KMaterial definitive agreement
May 8, 202410-QQuarterly report, Q2 2024 — revenue $1.65B (+7% y/y), net income $432.0M, EPS $2.85
May 8, 20248-KEarnings release — EPS $2.85 vs $2.62 est. (+8.8%); revenue $1.65B (+7% y/y) 0.7%
Mar 29, 20248-KMaterial definitive agreement; Results of operations; New financial obligation
Feb 13, 20248-KShareholder vote results
Feb 6, 202410-QQuarterly report, Q1 FY2024 — revenue $1.16B (−22% y/y), net income $311.3M, EPS $2.08
Feb 6, 20248-KEarnings release — EPS $2.08 vs $2.09 est. (−0.5%); revenue $1.16B (−22% y/y) 0.1%
2023 · 19 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms
FiledWhat it is
Dec 29, 2023ARSAnnual report to shareholders
Dec 29, 2023DEFA14AAdditional proxy materials
Dec 29, 2023DEF 14AProxy statement
Nov 14, 202310-KAnnual report, FY2023 — revenue $4.28B (+2% y/y), net income $885.9M, EPS $6.10
Aug 2, 202310-QQuarterly report, Q3 2023 — revenue $662.7M (−19% y/y), net income $137.8M, EPS $0.94
May 3, 202310-QQuarterly report, Q2 2023 — revenue $1.54B (−7% y/y), net income $357.7M, EPS $2.48
Feb 7, 202310-QQuarterly report, Q1 FY2023 — revenue $1.48B (+47% y/y), net income $271.9M, EPS $1.91

12 current reports (8-K) not listed; the year is on EDGAR.

2022 · 18 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms
FiledWhat it is
Dec 16, 2022DEFA14AAdditional proxy materials
Dec 16, 2022DEF 14AProxy statement
Nov 14, 202210-KAnnual report, FY2022 — revenue $4.20B (+23% y/y), net income $774.4M, EPS $5.60
Aug 3, 202210-QQuarterly report, Q3 2022 — revenue $816.4M (+35% y/y), net income $128.5M, EPS $0.92
May 4, 202210-QQuarterly report, Q2 2022 — revenue $1.65B (+25% y/y), net income $325.0M, EPS $2.37
Feb 8, 202210-QQuarterly report, Q1 FY2022 — revenue $1.01B (+11% y/y), net income $249.2M, EPS $1.86

12 current reports (8-K) not listed; the year is on EDGAR.

2021 · 22 filings — 16 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms
FiledWhat it is
Dec 17, 2021DEFA14AAdditional proxy materials
Dec 17, 2021DEF 14AProxy statement
Nov 12, 202110-KAnnual report, FY2021 — revenue $3.41B (+21% y/y), net income $665.6M, EPS $5.12
Aug 4, 202110-QQuarterly report, Q3 2021 — revenue $605.6M (+23% y/y), net income $102.4M, EPS $0.78
May 5, 202110-QQuarterly report, Q2 2021 — revenue $1.32B (+35% y/y), net income $296.8M, EPS $2.30
Feb 2, 202110-QQuarterly report, Q1 FY2021 — revenue $914.5M (+4% y/y), net income $217.7M, EPS $1.71

16 current reports (8-K) not listed; the year is on EDGAR.

2020 · 18 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms
FiledWhat it is
Dec 18, 2020DEFA14AAdditional proxy materials
Dec 18, 2020DEF 14AProxy statement
Nov 13, 202010-KAnnual report, FY2020 — revenue $2.82B (−3% y/y), net income $601.4M, EPS $4.89
Aug 5, 202010-QQuarterly report, Q3 2020 — revenue $493.0M (+1% y/y), net income $117.8M, EPS $0.96
May 6, 202010-QQuarterly report, Q2 2020 — revenue $977.7M (−11% y/y), net income $239.6M, EPS $1.95
Feb 4, 202010-QQuarterly report, Q1 FY2020 — revenue $875.6M (−0% y/y), net income $178.7M, EPS $1.47

12 current reports (8-K) not listed; the year is on EDGAR.

2019 · 17 filings — 10 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms
FiledWhat it is
Dec 20, 2019DEFA14AAdditional proxy materials
Dec 20, 2019DEF 14AProxy statement
Nov 12, 201910-KAnnual report, FY2019 — revenue $2.90B (−7% y/y), net income $511.4M, EPS $4.35
Aug 7, 201910-QQuarterly report, Q3 2019 — revenue $485.7M (−14% y/y), net income $80.5M, EPS $0.68
May 7, 201910-QQuarterly report, Q2 2019 — revenue $1.09B (−10% y/y), net income $214.9M, EPS $1.82
Feb 5, 201910-QQuarterly report, Q1 FY2019 — revenue $877.8M (−1% y/y), net income $157.6M, EPS $1.38
Jan 16, 2019PX14A6GShareholder exempt solicitation

10 current reports (8-K) not listed; the year is on EDGAR.

2018 · 18 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms
FiledWhat it is
Dec 21, 2018DEFA14AAdditional proxy materials
Dec 21, 2018DEF 14AProxy statement
Nov 13, 201810-KAnnual report, FY2018 — revenue $3.12B (+13% y/y), net income $603.1M, EPS $5.43
Aug 8, 201810-QQuarterly report, Q3 2018 — revenue $562.2M (+7% y/y), net income $71.2M, EPS $0.64
May 2, 201810-QQuarterly report, Q2 2018 — revenue $1.22B (+23% y/y), net income $179.0M, EPS $1.60
Feb 6, 201810-QQuarterly report, Q1 FY2018 — revenue $889.2M (+14% y/y), net income $314.1M, EPS $2.89

12 current reports (8-K) not listed; the year is on EDGAR.

2017 · 19 filings — 13 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms
FiledWhat it is
Dec 22, 2017DEFA14AAdditional proxy materials
Dec 22, 2017DEF 14AProxy statement
Nov 13, 201710-KAnnual report, FY2017 — revenue $2.76B (+12% y/y), net income $396.4M, EPS $3.73
Aug 2, 201710-QQuarterly report, Q3 2017 — revenue $526.5M (+15% y/y), net income $70.8M
May 4, 201710-QQuarterly report, Q2 2017 — revenue $988.2M (+11% y/y), net income $164.7M
Feb 7, 201710-QQuarterly report, Q1 FY2017 — revenue $780.2M (+16% y/y), net income $125.0M

13 current reports (8-K) not listed; the year is on EDGAR.

2016 · 17 filings — 11 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2015 · 14 filings — 7 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2014 · 16 filings — 9 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2013 · 18 filings — 11 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2012 · 21 filings — 13 × 8-K, 3 × 10-Q, 1 × 10-K and 4 other forms

Counted, not listed; the year is on EDGAR.

2011 · 20 filings — 13 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2010 · 18 filings — 11 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2009 · 22 filings — 14 × 8-K, 3 × 10-Q, 1 × 10-K and 4 other forms

Counted, not listed; the year is on EDGAR.

2008 · 17 filings — 10 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2007 · 15 filings — 8 × 8-K, 3 × 10-Q, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2006 · 17 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 1 other form

Counted, not listed; the year is on EDGAR.

2005 · 18 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2004 · 24 filings — 15 × 8-K, 3 × 10-Q, 2 × 8-K/A and 4 other forms

Counted, not listed; the year is on EDGAR.

2003 · 12 filings — 6 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2002 · 9 filings — 3 × 10-Q, 2 × 8-K, 1 × 10-K and 3 other forms

Counted, not listed; the year is on EDGAR.

2001 · 10 filings — 4 × 8-K, 3 × 10-Q, 1 × 10-K405 and 2 other forms

Counted, not listed; the year is on EDGAR.

2000 · 12 filings — 7 × 8-K, 3 × 10-Q, 1 × 10-K405 and 1 other form

Counted, not listed; the year is on EDGAR.

1999 · 6 filings — 3 × 10-Q, 1 × 10-K405, 1 × 8-K and 1 other form

Counted, not listed; the year is on EDGAR.

1998 · 8 filings — 3 × 10-Q, 2 × 8-K, 1 × 10-K405 and 2 other forms

Counted, not listed; the year is on EDGAR.

1997 · 11 filings — 6 × 8-K, 3 × 10-Q, 1 × 10-K and 1 other form

Counted, not listed; the year is on EDGAR.

1996 · 9 filings — 3 × 10-Q, 3 × 8-K, 1 × 10-K405 and 2 other forms

Counted, not listed; the year is on EDGAR.

1995 · 5 filings — 3 × 10-Q, 1 × 10-K405, 1 × DEF 14A

Counted, not listed; the year is on EDGAR.

1994 · 11 filings — 3 × 10-Q, 2 × 8-K, 1 × 10-K and 5 other forms

Counted, not listed; the year is on EDGAR.

Insider, ownership and other filings#

Insider ownership (Forms 3, 4, 5 and 144), beneficial ownership (Schedules 13D and 13G), registration and prospectus (S-1, S-3, S-8, 424B and related) and the rest, counted by year, with the newest 25 of each of the latest 3 years shown. A Form 4 is one insider’s transaction report; a 13G is a passive holder above five percent.

2026 · 55 filings — 37 × 4, 4 × 3, 4 × SCHEDULE 13G/A and 6 other forms
FiledWhat it is
Oct 8, 2026424B2Prospectus supplement
Oct 8, 20263Initial insider holdings (Form 3)
Oct 6, 2026FWPFree writing prospectus
Oct 6, 2026424B5Prospectus supplement
Oct 5, 20264Insider transaction (Form 4)
Oct 5, 20264Insider transaction (Form 4)
Sep 17, 20264Insider transaction (Form 4)
Sep 2, 20264Insider transaction (Form 4)
Sep 1, 20263Initial insider holdings (Form 3)
Aug 13, 2026SCHEDULE 13G/AOther filings
Aug 12, 20264Insider transaction (Form 4)
Jul 27, 2026SCHEDULE 13G/AOther filings
Jul 2, 20264Insider transaction (Form 4)
Jul 2, 20264Insider transaction (Form 4)
Jun 25, 202611-KEmployee plan annual report
Jun 17, 2026424B2Prospectus supplement
Jun 16, 2026FWPFree writing prospectus
Jun 15, 2026424B5Prospectus supplement
May 14, 2026SCHEDULE 13G/AOther filings
May 4, 20264Insider transaction (Form 4)
May 4, 20264Insider transaction (Form 4)
May 4, 20264Insider transaction (Form 4)
May 4, 20264Insider transaction (Form 4)
May 4, 20264Insider transaction (Form 4)
May 4, 20264Insider transaction (Form 4)

The newest 25 of 55 shown; the full year is on EDGAR.

2025 · 63 filings — 41 × 4, 7 × SCHEDULE 13G/A, 2 × 144 and 9 other forms
FiledWhat it is
Dec 18, 20254Insider transaction (Form 4)
Dec 12, 20254Insider transaction (Form 4)
Dec 4, 2025SCHEDULE 13G/AOther filings
Dec 4, 20254Insider transaction (Form 4)
Dec 3, 2025144Notice of proposed sale (Form 144)
Nov 12, 2025SCHEDULE 13G/AOther filings
Nov 5, 20254Insider transaction (Form 4)
Nov 5, 20254Insider transaction (Form 4)
Nov 5, 20254Insider transaction (Form 4)
Nov 5, 20254Insider transaction (Form 4)
Nov 5, 20254Insider transaction (Form 4)
Nov 5, 20254Insider transaction (Form 4)
Oct 2, 20254Insider transaction (Form 4)
Oct 2, 20254Insider transaction (Form 4)
Sep 22, 2025424B2Prospectus supplement
Sep 18, 2025FWPFree writing prospectus
Sep 18, 2025424B5Prospectus supplement
Aug 14, 2025SCHEDULE 13G/AOther filings
Jul 2, 20254Insider transaction (Form 4)
Jun 26, 202511-KEmployee plan annual report
Jun 18, 2025424B2Prospectus supplement
Jun 16, 2025FWPFree writing prospectus
Jun 16, 2025424B5Prospectus supplement
May 15, 20254Insider transaction (Form 4)
May 15, 2025SCHEDULE 13G/AOther filings

The newest 25 of 63 shown; the full year is on EDGAR.

2024 · 59 filings — 35 × 4, 6 × SC 13G/A, 4 × 424B5 and 8 other forms
FiledWhat it is
Dec 10, 2024144Notice of proposed sale (Form 144)
Dec 3, 2024424B5Prospectus supplement
Dec 3, 2024S-3ASRAutomatic shelf registration
Nov 19, 20244Insider transaction (Form 4)
Nov 14, 2024SC 13GPassive holder above 5% (Schedule 13G)
Nov 12, 20244Insider transaction (Form 4)
Nov 8, 2024SC 13G/APassive holder above 5% (Schedule 13G), amended
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Nov 7, 20244Insider transaction (Form 4)
Oct 8, 20243/AInitial insider holdings (Form 3), amended
Oct 2, 20244Insider transaction (Form 4)
Oct 2, 20244Insider transaction (Form 4)
Sep 25, 20243Initial insider holdings (Form 3)
Sep 23, 20243/AInitial insider holdings (Form 3), amended
Sep 19, 2024424B2Prospectus supplement
Sep 17, 2024FWPFree writing prospectus
Sep 17, 20243Initial insider holdings (Form 3)
Sep 17, 20243Initial insider holdings (Form 3)
Sep 17, 2024424B5Prospectus supplement
Jun 26, 202411-KEmployee plan annual report

The newest 25 of 59 shown; the full year is on EDGAR.

2023 · 63 filings — 35 × 4, 4 × 144, 3 × CORRESP and 13 other forms

Counted, not listed; the year is on EDGAR.

2022 · 50 filings — 36 × 4, 4 × SC 13G/A, 3 × 424B5 and 5 other forms

Counted, not listed; the year is on EDGAR.

2021 · 70 filings — 55 × 4, 3 × 424B5, 2 × 424B2 and 8 other forms

Counted, not listed; the year is on EDGAR.

2020 · 82 filings — 64 × 4, 4 × SC 13G/A, 2 × 424B3 and 10 other forms

Counted, not listed; the year is on EDGAR.

2019 · 75 filings — 56 × 4, 4 × 4/A, 3 × SC 13G/A and 7 other forms

Counted, not listed; the year is on EDGAR.

2018 · 80 filings — 55 × 4, 4 × SC 13G/A, 3 × 424B5 and 11 other forms

Counted, not listed; the year is on EDGAR.

2017 · 75 filings — 53 × 4, 5 × 3, 3 × 424B5 and 9 other forms

Counted, not listed; the year is on EDGAR.

2016 · 63 filings — 51 × 4, 3 × 4/A, 2 × 3 and 6 other forms

Counted, not listed; the year is on EDGAR.

2015 · 56 filings — 47 × 4, 3 × SC 13G/A, 2 × UPLOAD and 4 other forms

Counted, not listed; the year is on EDGAR.

2014 · 61 filings — 50 × 4, 2 × 424B2, 2 × 424B5 and 6 other forms

Counted, not listed; the year is on EDGAR.

2013 · 51 filings — 44 × 4, 1 × 11-K, 1 × 424B2 and 5 other forms

Counted, not listed; the year is on EDGAR.

2012 · 69 filings — 54 × 4, 7 × 4/A, 2 × 3 and 4 other forms

Counted, not listed; the year is on EDGAR.

2011 · 62 filings — 52 × 4, 2 × 5, 1 × 11-K and 7 other forms

Counted, not listed; the year is on EDGAR.

2010 · 67 filings — 58 × 4, 3 × UPLOAD, 2 × CORRESP and 4 other forms

Counted, not listed; the year is on EDGAR.

2009 · 71 filings — 59 × 4, 2 × 3, 2 × 4/A and 7 other forms

Counted, not listed; the year is on EDGAR.

2008 · 78 filings — 66 × 4, 2 × 3, 2 × 4/A and 7 other forms

Counted, not listed; the year is on EDGAR.

2007 · 69 filings — 59 × 4, 1 × 11-K, 1 × 3 and 8 other forms

Counted, not listed; the year is on EDGAR.

2006 · 70 filings — 56 × 4, 3 × 4/A, 2 × 3 and 8 other forms

Counted, not listed; the year is on EDGAR.

2005 · 57 filings — 54 × 4, 1 × 11-K, 1 × 3 and 1 other form

Counted, not listed; the year is on EDGAR.

2004 · 71 filings — 58 × 4, 4 × 424B3, 3 × 424B2 and 6 other forms

Counted, not listed; the year is on EDGAR.

2003 · 57 filings — 50 × 4, 2 × 424B2, 2 × 424B3 and 3 other forms

Counted, not listed; the year is on EDGAR.

2002 · 20 filings — 15 × 4, 1 × 11-K, 1 × 8-A12B/A and 3 other forms

Counted, not listed; the year is on EDGAR.

2001 · 6 filings — 1 × 11-K, 1 × 424B2, 1 × 424B3 and 3 other forms

Counted, not listed; the year is on EDGAR.

2000 · 5 filings — 2 × 424B3, 1 × 424B2, 1 × S-3 and 1 other form

Counted, not listed; the year is on EDGAR.

1999 · 4 filings — 2 × S-8, 1 × 8-A12B/A, 1 × S-3

Counted, not listed; the year is on EDGAR.

1998 · 8 filings — 2 × 424B3, 2 × 8-A12B, 1 × 424B2 and 3 other forms

Counted, not listed; the year is on EDGAR.

1997 · 3 filings — 1 × S-3, 1 × S-3/A, 1 × S-8

Counted, not listed; the year is on EDGAR.

1996 · 4 filings — 1 × 424B3, 1 × S-3, 1 × S-3/A and 1 other form

Counted, not listed; the year is on EDGAR.

1995 · 3 filings — 2 × S-8, 1 × 11-K

Counted, not listed; the year is on EDGAR.

1994 · 3 filings — 1 × S-3, 1 × S-3D/A, 1 × SC 13G

Counted, not listed; the year is on EDGAR.

About this data#

Atmos Energy Corporation (ATO) has 2,144 filings on EDGAR going back to 1994: 33 annual reports, 100 quarterly reports and 307 current reports, plus proxy statements, insider forms and ownership schedules. Its latest annual report, a 10-K, was filed on Nov 14, 2025 for the fiscal year ended Sep 30, 2025. The most recent 8-K, on Oct 9, 2026, covered material definitive agreement. Over the last 13 months insiders sold nothing and bought $50K in 1 purchase; 58 other transactions (awards, exercises, tax withholding, gifts and plan purchases). Not investment advice.

Every row is a filing EDGAR lists for the registrants that have been Atmos Energy Corporation, read from the SEC’s submissions index each morning; a filing accepted after that read appears the next day. Where a company changed its filing entity (a holding-company reorganisation, Google into Alphabet) the predecessor’s filings are shown for the years it filed as the company, derived from the filings themselves. Dates are the filing date; the period is the report’s own. The latest 3 years of reports are listed in full, the next years to 10 without their 8-Ks, and older years are counted; the other forms are counted too, with the newest 25 of each of the latest 3 years shown. Insider transactions are the Form 4 and Form 5 documents themselves, filed since January 2026, every number as the insider filed it: a day’s lots are summed, a blank price adds its shares and no dollars, and a purchase through an employee stock plan is a plan purchase, not insider buying. An 8-K’s headline is the first line of the press release it furnishes (Exhibit 99), read from the filing and shown word for word; where two independent readings of the exhibit do not agree, the 8-K is described by its items instead. The documents stay on sec.gov, public domain, and every link opens the SEC’s copy. ChartRow does not summarise or interpret filings.

FAQ#

Where can I read ATO's latest 10-K?
ATO's latest annual report, a 10-K, was filed on Nov 14, 2025 for the fiscal year ended Sep 30, 2025. It is linked above and opens on EDGAR, the SEC's own site, where every exhibit is also listed.
When did ATO last file an 8-K?
On Oct 9, 2026 it covered material definitive agreement. An 8-K reports a material event between quarterly reports; the one that furnishes the quarter's results is filed under Item 2.02, last on Aug 5, 2026.
Are ATO insiders buying or selling?
Over the last 13 months insiders sold nothing and bought $50K in 1 purchase; 58 other transactions (awards, exercises, tax withholding, gifts and plan purchases). Every figure is as the insider filed it on Form 4; a sale under a 10b5-1 plan was scheduled in advance.
How many SEC filings has ATO made?
2,144 filings are on EDGAR under the registrant records that have been Atmos Energy Corporation, going back to 1994; 1,319 of them are insider ownership forms (Forms 3, 4, 5 and 144).