Atmos Energy Corporation ATO

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Atmos Energy Corporation Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 158.78 → 178.47 · 12.4%
192.290173.485154.680 1,2 3 4 5,6 7 8 9 10,11 12,13 14 15 16 17,18 19 20 21,22 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
176.9000 178.5500 176.1900 178.4700 540,037
176.7500 176.8900 174.6800 175.0500 800,800
177.4300 178.6500 176.1900 177.3300 1,089,200
Weekend
Weekend
176.0400 181.4700 176.0400 177.6800 1,483,200
175.2000 178.2100 175.1900 178.0400 1,254,200
177.6500 178.2200 174.6500 174.9800 1,301,800
179.4700 180.8500 178.0700 178.4500 1,021,500
177.3500 179.9600 176.9400 179.5000 918,700
Weekend
Weekend
174.5600 176.6000 174.5600 176.2000 527,300
177.0300 177.4400 174.4600 174.7200 1,379,000
178.1400 179.1300 176.1800 177.0900 1,092,900
175.7000 179.7900 174.9800 177.5800 1,481,200
176.7900 176.7900 173.4900 173.8300 1,139,900
Weekend
Weekend
No trading
174.2900 176.8800 173.0600 176.8700 898,600
172.1100 173.8500 172.0000 173.0300 1,142,900
173.3900 174.2200 172.1800 172.2700 1,387,900
174.2800 175.4200 173.8200 174.8400 1,465,800
Weekend
Weekend
171.7000 175.1900 171.7000 175.1700 2,030,600
173.0000 175.2700 173.0000 173.6700 1,257,000
173.5300 173.7000 171.6300 172.5900 1,343,400
170.8900 172.7700 169.9500 171.0900 1,101,400
169.2300 170.7900 168.9000 169.5900 1,271,700
Weekend
Weekend
No trading
22 · 8-K After-hours · 17:11 ET 8-K ↗
169.6400 171.2100 169.0400 170.1100 2,227,800
21 · 8-K Pre-market · 09:00 ET 8-K ↗ 20 · 424B2 After-hours · 16:22 ET 424B2 ↗
168.6200 170.0500 168.2200 169.6400 1,480,000
170.1900 171.2800 168.9300 169.6300 1,027,900
168.8200 170.8500 168.4000 169.6000 1,576,900
19 · 424B5 Pre-market · 08:43 ET 424B5 ↗
Weekend
Weekend
168.2200 169.9900 167.7700 169.9600 1,540,700
170.2600 170.5900 167.7400 168.2300 1,632,500
168.9500 169.9400 167.7800 169.2700 1,776,600
168.2900 168.9200 166.6900 167.6200 1,793,900
169.9700 170.0400 167.1100 167.8900 2,243,800
Weekend
Weekend
168.9400 171.9500 168.4500 170.2400 1,467,600
169.7800 170.1300 166.3300 167.9600 1,701,000
169.3200 171.2700 168.2400 168.3000 2,125,000
168.1300 168.9100 166.4700 168.7500 1,782,700
168.1000 169.0600 167.1100 167.1500 1,992,600
Weekend
Weekend
172.4400 172.9400 168.1200 169.1300 6,473,400
174.8300 176.4700 172.0400 173.0300 1,565,500
176.7800 177.8600 175.1500 176.2400 996,700
176.9800 178.8500 176.1200 177.7200 1,477,400
No trading
Weekend
Weekend
178.1800 178.4800 176.3100 177.8100 1,472,300
176.2200 177.4700 175.2300 177.4600 1,615,200
178.2000 179.0200 175.8600 176.0000 2,009,900
178.6400 180.5600 177.5700 177.7300 2,326,000
177.7300 179.8100 176.9900 178.5200 1,764,600
Weekend
Weekend
180.8800 181.2200 176.2900 176.4800 1,616,600
180.2800 181.3700 179.6500 180.8700 1,622,900
181.0800 181.0800 178.0300 179.9500 1,379,300
182.7400 183.4300 180.9100 181.9400 903,900
182.4500 183.1400 180.6100 182.1300 796,400
Weekend
Weekend
183.4900 184.8300 180.8500 180.8700 1,136,600
186.8600 190.1900 180.6800 181.8600 1,868,800
18 · 10-Q After-hours · 17:12 ET 10-Q ↗ 17 · 8-K After-hours · 16:58 ET 8-K ↗
188.9800 188.9800 183.7000 184.7600 906,800
186.5000 188.9000 185.5700 187.2500 860,900
187.2300 189.6900 186.6700 187.7700 748,100
Weekend
Weekend
188.5700 191.4900 187.9900 188.5400 676,200
186.0900 190.1000 185.9200 189.9800 1,172,300
186.5200 187.2200 185.5700 185.7100 696,700
187.8200 187.8200 185.7100 187.1300 457,600
186.4900 187.5000 185.5600 185.6200 845,200
Weekend
Weekend
187.4100 187.4100 185.1100 185.4500 617,300
183.6500 188.5400 182.4700 187.8100 735,500
183.9600 184.6500 181.3200 182.4900 846,000
187.3500 187.3500 182.6800 182.9300 608,100
186.0900 187.7100 186.0000 186.2300 514,400
Weekend
Weekend
187.3400 187.3400 183.7700 186.5400 841,200
185.9400 188.3100 185.7500 187.9800 1,095,800
187.5000 187.5000 185.3600 186.2600 578,300
187.0400 188.3300 185.2800 188.1600 497,400
190.2600 190.2600 186.4800 187.7500 874,700
Weekend
Weekend
192.2900 192.3100 190.3100 190.3600 910,100
189.4600 192.5100 189.2200 192.2900 932,600
186.7000 190.0300 186.0200 189.6600 1,043,500
187.8100 190.0500 187.5700 188.7000 816,600
188.8100 190.0000 187.5600 187.8100 614,200
Weekend
Weekend
No trading
186.2100 189.1100 185.3100 188.9700 664,700
183.6000 186.5900 183.5800 185.4900 811,200
185.8700 186.0700 182.5000 184.7200 886,700
184.8500 186.2200 184.0500 185.0200 838,900
16 · 8-K Pre-market · 07:15 ET 8-K ↗
Weekend
Weekend
183.4400 184.4500 182.7500 183.1900 636,300
181.2100 183.2600 180.8500 183.1800 694,700
182.4800 183.4200 181.4100 181.5500 770,400
180.2100 183.6300 179.3200 181.5700 766,600
181.3100 182.2900 180.5200 181.0300 1,034,700
Weekend
Weekend
184.9500 185.4200 180.4300 180.4900 3,328,800
185.1300 186.2100 183.4200 184.9000 1,082,000
185.8600 186.4500 185.1000 185.2500 2,133,800
189.0700 189.0700 186.5200 186.9800 691,500
190.1300 190.1300 187.0700 187.8200 899,100
Weekend
Weekend
188.6200 189.3200 186.8500 188.5800 765,000
184.8300 188.8000 183.7900 186.7900 930,600
184.5200 184.8400 182.1900 184.3000 842,400
184.2000 186.3000 183.0700 183.4400 1,222,800
183.1200 185.9000 182.9100 185.2400 1,601,300
Weekend
Weekend
184.4400 186.2300 183.2300 185.0400 1,057,900
185.1100 186.5100 184.0000 185.3800 1,263,300
185.8900 186.8900 183.8500 186.7700 1,456,700
184.8500 186.4600 182.6500 186.0000 1,659,100
186.7900 187.9800 185.2500 187.0700 1,053,900
Weekend
Weekend
184.3600 187.8200 182.8800 186.7900 2,836,600
182.3400 183.9100 181.9700 183.6300 931,400
181.8900 182.4800 180.0900 182.0600 814,600
181.7800 182.3900 180.4100 182.0200 720,500
180.1900 182.6900 180.1900 181.7200 823,900
Weekend
Weekend
180.2600 181.0800 178.3000 180.9700 1,037,300
179.1500 180.1200 178.2500 178.9700 928,900
179.9500 180.3900 177.6300 178.1200 1,584,100
180.0900 181.0100 179.2600 180.2400 912,400
No trading
Weekend
Weekend
177.5200 179.9400 176.6100 179.2500 1,184,000
176.6800 179.8900 176.5300 177.7700 2,037,900
174.1500 176.3700 173.7700 175.9700 1,296,600
15 · 8-K After-hours · 17:12 ET 8-K ↗
171.8500 174.5000 171.1400 174.1700 1,125,600
171.2800 171.7200 169.8200 171.4600 1,271,600
Weekend
Weekend
172.6600 174.5700 170.7800 171.3800 962,200
173.6100 173.6100 170.2100 171.5000 1,624,700
14 · 424B3 Next filing day · accepted 04 Feb, 20:57 ET 424B3 ↗
171.1200 174.5700 168.6700 171.8300 1,821,600
13 · 10-Q After-hours · 17:00 ET 10-Q ↗ 12 · 8-K After-hours · 16:44 ET 8-K ↗
166.1300 169.9900 166.1300 168.8100 2,334,100
166.3300 167.2900 164.5000 166.5200 1,673,800
Weekend
Weekend
165.5900 167.2100 164.4000 166.3400 3,291,700
166.9300 168.8200 165.9400 166.0000 2,091,400
169.0000 169.4000 165.9800 166.0000 1,966,400
168.2400 169.0300 167.3900 169.0300 2,044,700
166.6100 169.0300 166.2500 168.5000 2,474,900
Weekend
Weekend
165.2600 165.5300 163.5700 165.3400 2,542,700
169.3100 169.3100 163.7700 165.4000 2,000,600
169.7000 169.8400 166.6800 168.3700 2,305,100
170.7300 172.0900 167.9900 168.0000 1,648,400
No trading
Weekend
Weekend
169.3700 170.6700 169.1300 170.4700 1,372,900
169.3400 170.4900 168.5200 170.2800 795,900
168.5800 170.1300 168.1800 168.7200 1,450,100
167.6300 168.9400 166.7000 168.4100 1,154,800
166.9300 168.6600 166.7400 167.6100 935,200
Weekend
Weekend
167.2000 168.6200 166.3900 166.7800 713,000
166.0100 168.3000 165.7300 167.1000 950,700
168.1500 168.6100 165.5200 166.1500 719,100
167.2100 168.1700 166.4900 167.5400 899,200
168.5000 169.1700 164.5000 166.8800 971,300
Weekend
Weekend
167.1500 170.1100 166.3400 169.3600 656,500
No trading
168.5800 169.0100 167.4700 167.6300 469,100
168.9100 169.2700 168.2500 168.5800 472,900
168.9300 169.6000 168.4700 168.7800 526,300
Weekend
Weekend
168.3400 168.7800 167.3000 168.1300 345,900
No trading
168.4400 169.2100 167.7200 168.4000 438,600
167.4200 168.6800 166.9900 167.9900 983,900
166.7000 167.4500 165.3700 167.3400 910,800
Weekend
Weekend
169.1900 169.4200 166.6000 166.7000 1,628,200
11 · DEFA14A Pre-market · 08:39 ET DEFA14A ↗ 10 · DEF 14A Pre-market · 08:37 ET DEF 14A ↗
168.7100 170.4400 168.7100 169.4200 1,025,000
167.9500 170.7800 167.4300 169.1700 1,192,400
168.6700 170.4300 167.8900 168.0000 1,570,000
168.7500 171.4200 167.9100 170.7500 1,819,100
Weekend
Weekend
167.3400 169.6400 167.0700 168.3700 983,900
167.3700 170.1000 166.4000 167.0900 916,800
166.1600 167.7300 165.9900 166.8000 1,051,300
9 · PRE 14A After-hours · 16:31 ET PRE 14A ↗
168.2400 169.0800 165.8900 166.2800 972,500
170.8300 171.1600 166.7500 167.0700 1,066,600
Weekend
Weekend
170.2800 172.1300 170.2800 171.2900 939,100
170.4000 172.1100 170.4000 170.9500 1,222,500
170.9100 172.2900 170.1800 171.1500 968,300
172.5300 172.5300 169.6400 170.0800 865,400
175.6100 176.2200 171.5600 171.7200 958,700
Weekend
Weekend
176.2200 176.9900 175.6100 176.3700 336,500
No trading
173.3100 176.0200 173.2100 175.7400 715,200
174.8900 175.6300 172.6400 173.3400 991,000
174.0000 175.3700 173.3400 174.5600 4,679,900
Weekend
Weekend
175.3000 176.1100 174.3000 175.1600 1,894,700
174.5100 176.0000 174.0200 174.7700 975,700
175.0200 175.6600 173.5600 173.9200 993,300
175.9500 177.0500 174.9600 175.2200 926,200
175.9500 177.0200 174.8000 175.6800 1,430,100
Weekend
Weekend
8 · 10-K After-hours · 17:06 ET 10-K ↗
177.9700 179.2600 174.8900 175.1200 1,321,800
178.2200 180.3300 177.7400 177.9700 1,210,300
178.3900 179.2000 177.5000 177.8300 939,200
178.2600 178.8400 177.3900 178.6600 669,100
175.9200 178.0200 175.8000 177.7600 885,800
Weekend
Weekend
176.4300 177.8700 175.2900 176.9100 1,343,600
177.1500 180.6500 175.2200 175.4800 1,741,700
7 · 8-K After-hours · 16:35 ET 8-K ↗
173.5500 174.3400 171.7000 172.5900 1,028,300
173.5100 174.1100 171.8200 173.9500 834,600
170.9800 173.2300 169.3100 172.7000 766,600
Weekend
Weekend
172.9500 173.6200 171.3800 171.7200 1,906,600
172.4100 174.1300 172.2600 173.3500 660,300
173.8200 174.4000 171.4400 171.6600 816,300
175.9000 176.4600 174.2800 174.4900 713,700
175.8400 176.3500 174.4400 176.3500 635,600
Weekend
Weekend
176.2300 176.6700 175.1900 175.9300 627,200
178.0000 178.0000 174.9800 175.7500 765,500
177.7000 177.9200 176.1400 177.1000 729,900
178.2100 178.4900 176.4400 177.0400 692,300
177.5700 178.0700 175.3100 177.7400 654,500
Weekend
Weekend
176.8700 177.2300 175.0200 176.4100 1,075,000
178.6300 179.6000 176.1500 176.3700 1,062,100
177.8200 179.7000 177.6500 179.1900 578,300
176.2100 177.9500 175.4100 177.6500 610,500
175.7500 176.9200 174.1300 175.5400 475,400
Weekend
Weekend
175.9100 177.8300 175.2900 176.4800 639,800
176.6100 177.0100 174.7200 174.9300 501,000
175.5700 176.1100 173.2200 175.7500 740,300
174.3900 175.4900 173.5400 174.9100 643,500
170.6400 173.5500 170.1900 173.3200 843,900
Weekend
Weekend
168.9000 170.9900 168.9000 170.1900 607,200
168.7200 169.1200 167.6200 168.8500 578,700
6 · 8-K After-hours · 16:13 ET 8-K ↗
171.1600 171.1600 169.0900 169.3800 851,400
5 · 8-K Pre-market · 08:50 ET 8-K ↗
169.7200 171.2000 169.3700 170.7500 866,700
168.9000 169.7000 167.3800 169.5500 753,100
Weekend
Weekend
167.6800 169.9600 167.0400 168.4500 687,300
166.9200 168.8600 166.0000 166.4600 758,700
166.3400 167.2400 166.0800 166.7700 621,500
162.7100 166.4900 162.7000 166.3400 822,200
4 · 424B2 After-hours · 16:19 ET 424B2 ↗
162.7200 163.6000 162.2000 162.9600 778,100
Weekend
Weekend
162.7800 163.9400 161.4500 162.9300 1,605,700
161.1300 163.1200 160.1000 162.4400 1,004,300
3 · 424B5 Pre-market · 08:42 ET 424B5 ↗
163.5700 164.8700 162.5300 163.4500 1,052,400
164.6100 165.7500 162.9000 163.2100 1,182,300
166.6000 166.6000 165.6900 165.8100 680,400
Weekend
Weekend
166.5700 167.1400 165.9700 166.5400 414,800
163.6500 166.5500 162.7100 166.3900 692,100
164.5900 164.9500 163.6200 163.9100 703,700
162.9000 164.9200 162.5100 164.0700 659,300
166.4800 166.5500 163.3400 163.8700 1,030,400
Weekend
Weekend
165.2100 166.5700 164.8300 166.4800 847,700
165.9800 166.4700 162.9900 164.7900 980,900
165.2400 165.7600 164.3100 165.2200 655,300
165.7400 166.7500 165.3600 165.4600 964,000
No trading
Weekend
Weekend
165.3200 166.7200 164.9100 166.1300 724,200
166.0200 166.0200 165.1000 165.4300 650,700
166.0100 166.6400 165.3500 166.2500 927,900
165.3500 166.4600 164.5300 166.0100 2,011,000
166.4300 166.8500 165.1800 165.4500 638,000
Weekend
Weekend
167.3900 168.8600 167.1600 168.2100 720,000
165.7500 167.1500 165.6200 166.7900 514,400
166.4000 167.8500 165.5700 166.0900 766,200
163.8800 165.8800 163.7700 165.8100 669,700
165.3500 165.3500 163.8200 164.0200 870,000
Weekend
Weekend
165.9900 166.6600 164.8600 165.3700 968,700
166.9800 167.4400 165.6900 166.1300 658,400
165.4700 166.9900 164.5100 166.9800 861,400
165.2100 165.9500 163.7000 165.7200 1,007,000
164.5400 165.1600 163.3300 165.0400 1,306,500
Weekend
Weekend
162.8400 166.3700 162.7300 164.2900 1,416,100
160.9900 166.4300 160.9100 162.7200 2,039,500
2 · 10-Q After-hours · 16:46 ET 10-Q ↗ 1 · 8-K After-hours · 16:38 ET 8-K ↗
156.6200 158.5700 155.5600 157.0200 1,409,800
159.5000 160.0000 156.4400 156.6300 863,200
156.0100 159.7600 155.8900 159.4500 1,092,800
Weekend
Weekend
157.4900 157.4900 154.6200 155.8100 829,900
155.8700 156.8700 154.5500 155.9200 1,166,500
156.6900 157.5400 155.7500 156.2000 656,400
155.4000 156.5300 154.5300 156.1100 614,300
156.4000 156.5900 154.2300 154.6800 734,500
Weekend
Weekend
157.3900 158.0100 156.1200 156.8400 533,700
157.6400 158.5500 157.0800 157.7100 451,100
158.9800 159.4000 156.4600 157.0900 509,100
158.6900 160.5800 158.4900 158.7800 495,500

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

22 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:11 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:00 ET Summarise
20 424B2 424B2 (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
19 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 08:43 ET Summarise
18 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:58 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:15 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise
14 424B3 424B3 (opens SEC filing in a new tab) Next filing day · accepted 04 Feb, 20:57 ET Summarise
13 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:44 ET Summarise
11 DEFA14A DEFA14A (opens SEC filing in a new tab) Pre-market · 08:39 ET Summarise
10 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 08:37 ET Summarise
9 PRE 14A PRE 14A (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
8 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:06 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:50 ET Summarise
4 424B2 424B2 (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
3 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 08:42 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:38 ET Summarise