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United States Natural Gas Utilities

Atmos Energy Corp (ATO)

Track

The most recent insider trading activity at Atmos Energy Corp occurred on December 3, 2025, with a reported sale of 450 shares by DONOHUE SEAN and a proposed sale of 452 shares by SEAN DONOHUE. Prior to this, significant proposed and planned sales were noted in May 2025 and December 2024. A buy transaction was also recorded in November 2024.
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Ticker: ATO Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
DONOHUE SEAN
1 sale — total 77,018 USD
Sale 3 Dec 2025
Value US$446,163.08 | Price 166.98 | Shares 59,721
Proposed sale 3 Dec 2025
Value US$4,668,434.43 | Price 322.41 | Shares 78,347
Planned sale 14 May 2025
Value US$2,264,685.00 | Price 150.98 | Shares 15,000
Proposed sale 14 May 2025
Value US$2,300,775.00 | Price 153.39 | Shares 15,000
Proposed sale 10 Dec 2024
Value US$30,916,200.00 | Price 147.22 | Shares 210,000
Buy 11 Nov 2024
Value US$362,225.00 | Price 144.89 | Shares 2,500
Sale 16 May 2024
Value US$47,200.00 | Price 118.00 | Shares 400
Planned sale 27 Mar 2024
Value US$1,746,850.50 | Price 116.46 | Shares 15,000
Proposed sale 27 Mar 2024
Value US$1,744,732.50 | Price 116.32 | Shares 15,000
Proposed sale 17 Nov 2023
Value US$199,850.35 | Price 114.20 | Shares 1,750
Sale 17 Nov 2023
Value US$199,850.00 | Price 114.20 | Shares 1,750
Planned sale 6 Nov 2023
Value US$1,387,416.25 | Price 110.99 | Shares 12,500
Proposed sale 6 Nov 2023
Value US$1,389,500.00 | Price 111.16 | Shares 12,500
Planned sale 7 Aug 2023
Value US$1,467,981.25 | Price 117.44 | Shares 12,500
Proposed sale 7 Aug 2023
Value US$1,465,875.00 | Price 117.27 | Shares 12,500
Sale 5 May 2023
Value US$45,825.00 | Price 117.50 | Shares 390
Planned sale 1 May 2023
Value US$1,431,696.25 | Price 114.54 | Shares 12,500
Proposed sale 1 May 2023
Value US$1,428,228.00 | Price 114.26 | Shares 12,500
Planned sale 6 Feb 2023
Value US$1,464,295.00 | Price 117.14 | Shares 12,500
Sale 15 Nov 2022
Value US$121,407.00 | Price 110.37 | Shares 1,100
Sale 14 Oct 2022
Value US$202.08 | Price 101.04 | Shares 2
Sale 11 Feb 2022
Value US$11.55 | Price 105.00 | Shares 0
Sale 10 Feb 2022
Value US$101,274.75 | Price 106.61 | Shares 950
Buy 4 Feb 2021
Value US$43,897.50 | Price 87.80 | Shares 500
Buy 10 Dec 2020
Value US$48,705.00 | Price 97.41 | Shares 500
Buy 26 Aug 2020
Value US$149,220.00 | Price 99.48 | Shares 1,500
Buy 18 Aug 2020
Value US$51,500.00 | Price 103.00 | Shares 500
Buy 11 Jun 2020
Value US$99,750.00 | Price 99.75 | Shares 1,000
Buy 11 Jun 2020
Value US$100,000.00 | Price 100.00 | Shares 1,000
Buy 15 May 2020
Value US$92,300.00 | Price 92.30 | Shares 1,000
Buy 11 May 2020
Value US$95,470.00 | Price 95.47 | Shares 1,000
Sale 11 Nov 2019
Value US$427,680.00 | Price 106.92 | Shares 4,000
Sale 16 Aug 2018
Value US$3,256,400.00 | Price 93.04 | Shares 35,000
Sale 15 Aug 2018
Value US$186,100.00 | Price 93.05 | Shares 2,000
Buy 15 Aug 2017
Value US$132,178.50 | Price 88.12 | Shares 1,500
Sale 16 Dec 2016
Value US$740,775.00 | Price 74.08 | Shares 10,000
Sale 19 Aug 2016
Value US$76,747.25 | Price 75.24 | Shares 1,020
Sale 8 Aug 2016
Value US$312,384.80 | Price 78.10 | Shares 4,000
Sale 13 May 2016
Value US$296,640.00 | Price 74.16 | Shares 4,000
Sale 4 Dec 2015
Value US$186,000.00 | Price 62.00 | Shares 3,000
Sale 10 Feb 2015
Value US$54,660.00 | Price 54.66 | Shares 1,000
Sale 12 Dec 2014
Value US$270,000.00 | Price 54.00 | Shares 5,000
Sale 10 Nov 2014
Value US$81,420.00 | Price 54.28 | Shares 1,500
Sale 13 May 2014
Value US$150,095.10 | Price 50.03 | Shares 3,000
Sale 12 Nov 2013
Value US$45,754.00 | Price 45.75 | Shares 1,000
Sale 11 Nov 2013
Value US$45,710.00 | Price 45.71 | Shares 1,000
Sale 11 Jun 2013
Value US$160,306.77 | Price 41.10 | Shares 3,900
Sale 13 Mar 2013
Value US$164,640.00 | Price 41.16 | Shares 4,000
Sale 5 Mar 2013
Value US$1,004,232.50 | Price 40.17 | Shares 25,000
Sale 4 Mar 2013
Value US$38,948.00 | Price 38.95 | Shares 1,000
Sale 14 Aug 2012
Value US$2,313,009.12 | Price 36.77 | Shares 62,900
Sale 13 Aug 2012
Value US$68,808.00 | Price 36.60 | Shares 1,880
Sale 5 Jun 2012
Value US$83,035.00 | Price 33.21 | Shares 2,500
Sale 9 Mar 2012
Value US$31,131.60 | Price 31.13 | Shares 1,000
Sale 29 Nov 2011
Value US$79,560.00 | Price 33.15 | Shares 2,400
Sale 29 Nov 2011
Value US$19,890.60 | Price 33.15 | Shares 600
Sale 14 Nov 2011
Value US$51,762.14 | Price 35.19 | Shares 1,471
Sale 11 Feb 2011
Value US$30,159.90 | Price 33.51 | Shares 900
Sale 11 Feb 2011
Value US$137,391.00 | Price 33.51 | Shares 4,100
Sale 26 Nov 2010
Value US$1,310,707.51 | Price 30.23 | Shares 43,362
Sale 24 Nov 2010
Value US$30,232.80 | Price 30.23 | Shares 1,000
Sale 24 Nov 2010
Value US$30,242.00 | Price 30.24 | Shares 1,000
Sale 24 Nov 2010
Value US$150,011.98 | Price 30.32 | Shares 4,948
Sale 24 Nov 2010
Value US$1,888,246.99 | Price 30.32 | Shares 62,282
Sale 22 Nov 2010
Value US$176,492.40 | Price 30.51 | Shares 5,784
Sale 22 Nov 2010
Value US$24,408.80 | Price 30.51 | Shares 800
Sale 10 Nov 2010
Value US$1,073,641.50 | Price 30.15 | Shares 35,610
Sale 9 Nov 2010
Value US$1,942,646.30 | Price 30.17 | Shares 64,390
Sale 9 Nov 2010
Value US$2,262,750.00 | Price 30.17 | Shares 75,000
Sale 24 Aug 2010
Value US$241,400.00 | Price 28.40 | Shares 8,500
Sale 17 Aug 2010
Value US$116,000.00 | Price 29.00 | Shares 4,000
Sale 11 Aug 2010
Value US$86,700.00 | Price 28.90 | Shares 3,000
Sale 9 Aug 2010
Value US$294,000.00 | Price 29.40 | Shares 10,000
Sale 14 Dec 2009
Value US$8,757.00 | Price 29.19 | Shares 300
Sale 14 Dec 2009
Value US$35,016.00 | Price 29.18 | Shares 1,200
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-12-04 2025-12-03 S Sale
1.4
DONOHUE SEAN
Non-Executive Director
59,721 +34.5%
166.98
US$446,163 		59,721 +34.5% 166.98 US$446,163
2025-12-03 2025-12-03 PrS Proposed sale
1.4
SEAN DONOHUE

Director

Non-Executive Director
78,347
322.41
US$4,668,434 		78,347 322.41 US$4,668,434
2025-05-15 2025-05-14 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
86,341 +43.0%
248.01
US$1,999,775 		86,341 +43.0% 248.01 US$1,999,775
2025-05-14 2025-05-14 PrS Proposed sale
COCKLIN KIM R

Director

Non-Executive Director
15,000
153.39
US$2,300,775 		15,000 153.39 US$2,300,775
2024-12-10 2024-12-10 PrS Proposed sale
Atmos Energy Corporation Master Retirement Trust

Issuer is Settlor of Trust
210,000
147.22
US$30,916,200 		210,000 147.22 US$30,916,200
2024-11-12 2024-11-11 B Purchase
1.6
Geiser Edward
Non-Executive Director
2,500 +2451.0%
144.89
US$362,225 		2,500 +2451.0% 144.89 US$362,225
2024-05-16 2024-05-16 S Sale
3.6
WALTERS DIANA J
Non-Executive Director
400 -10.1%
118.00
US$47,200 		400 -10.1% 118.00 US$47,200
2024-03-28 2024-03-27 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
15,000 -7.5%
116.46
US$1,746,850 		15,000 -7.5% 116.46 US$1,746,850
2024-03-27 2024-03-27 PrS Proposed sale
COCKLIN KIM R

Director

Non-Executive Director
15,000
116.32
US$1,744,732 		15,000 116.32 US$1,744,732
2023-11-17 2023-11-17 PrS Proposed sale
1.8
RICHARD M THOMAS

Officer

Officer
1,750
114.20
US$199,850 		1,750 114.20 US$199,850
2023-11-17 2023-11-17 S Sale
1.8
THOMAS RICHARD M

VICE PRESIDENT & CONTROLLER

Officer
1,750 -39.8%
114.20
US$199,850 		1,750 -39.8% 114.20 US$199,850
2023-11-08 2023-11-06 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
12,500 -5.9%
110.99
US$1,387,416 		12,500 -5.9% 110.99 US$1,387,416
2023-11-06 2023-11-06 PrS Proposed sale
COCKLIN KIM R

Director

Non-Executive Director
12,500
111.16
US$1,389,500 		12,500 111.16 US$1,389,500
2023-08-08 2023-08-07 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
12,500 -5.6%
117.44
US$1,467,981 		12,500 -5.6% 117.44 US$1,467,981
2023-08-07 2023-08-07 PrS Proposed sale
COCKLIN KIM R

Director

Non-Executive Director
12,500
117.27
US$1,465,875 		12,500 117.27 US$1,465,875
2023-05-05 2023-05-05 S Sale
3.6
WALTERS DIANA J
Non-Executive Director
390 -13.1%
117.50
US$45,825 		390 -13.1% 117.50 US$45,825
2023-05-03 2023-05-01 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
12,500 -5.4%
114.54
US$1,431,696 		12,500 -5.4% 114.54 US$1,431,696
2023-05-01 2023-05-01 PrS Proposed sale
COCKLIN KIM R

Director

Non-Executive Director
12,500
114.26
US$1,428,228 		12,500 114.26 US$1,428,228
2023-02-08 2023-02-06 PlS Planned sale
COCKLIN KIM R
Non-Executive Director
12,500 -5.2%
117.14
US$1,464,295 		12,500 -5.2% 117.14 US$1,464,295
2022-11-15 2022-11-15 S Sale
1.8
THOMAS RICHARD M

VICE PRESIDENT & CONTROLLER

Officer
1,100 -27.6%
110.37
US$121,407 		1,100 -27.6% 110.37 US$121,407
2022-11-10 2022-10-14 S Sale
0.7
MCDILL JOHN S

SR VP, UTILITY OPERATIONS

Officer
2 -0.0%
101.04
US$202 		2 -0.0% 101.04 US$202
2022-05-10 2022-02-11 S Sale
2.3
Forsythe Christopher T

SR VICE PRESIDENT & CFO

Officer
0 -0.0%
105.00
US$12 		0 -0.0% 105.00 US$12
2022-02-11 2022-02-10 S Sale
1.8
THOMAS RICHARD M

VICE PRESIDENT & CONTROLLER

Officer
950 -25.2%
106.61
US$101,275 		950 -25.2% 106.61 US$101,275
2021-02-04 2021-02-04 B Purchase
3.0
YOHO FRANK H
Non-Executive Director
500 +20.0%
87.80
US$43,898 		500 +20.0% 87.80 US$43,898
2020-12-10 2020-12-10 B Purchase
2.8
Sampson Richard A
Non-Executive Director
500 +7.6%
97.41
US$48,705 		500 +7.6% 97.41 US$48,705
2020-08-26 2020-08-26 B Purchase
3.0
YOHO FRANK H
Non-Executive Director
1,500 +150.0%
99.48
US$149,220 		1,500 +150.0% 99.48 US$149,220
2020-08-19 2020-08-18 B Purchase
2.8
Sampson Richard A
Non-Executive Director
500 +8.3%
103.00
US$51,500 		500 +8.3% 103.00 US$51,500
2020-06-12 2020-06-11 B Purchase
2.8
Sampson Richard A
Non-Executive Director
1,000 +20.0%
99.75
US$99,750 		1,000 +20.0% 99.75 US$99,750
2020-06-11 2020-06-11 B Purchase
2.8
Sampson Richard A
Non-Executive Director
1,000 +25.0%
100.00
US$100,000 		1,000 +25.0% 100.00 US$100,000
2020-05-19 2020-05-15 B Purchase
3.0
YOHO FRANK H
Non-Executive Director
1,000 +inf%
92.30
US$92,300 		1,000 +inf% 92.30 US$92,300
2020-05-19 2020-05-11 B Purchase
2.8
Sampson Richard A
Non-Executive Director
1,000 +33.3%
95.47
US$95,470 		1,000 +33.3% 95.47 US$95,470
2019-11-12 2019-11-11 S Sale PARK DAVID J

SR VP, UTILITY OPERATIONS

Officer
4,000 -28.5%
106.92
US$427,680 		4,000 -28.5% 106.92 US$427,680
2018-08-16 2018-08-16 S Sale
2.5
DOUGLAS RICHARD W

Retired Board Member
35,000 -84.8%
93.04
US$3,256,400 		35,000 -84.8% 93.04 US$3,256,400
2018-08-16 2018-08-15 S Sale
2.7
QUINN NANCY K
Non-Executive Director
2,000 -100.0%
93.05
US$186,100 		2,000 -100.0% 93.05 US$186,100
2017-08-15 2017-08-15 B Purchase
2.8
Sampson Richard A
1,500 +100.0%
88.12
US$132,178 		1,500 +100.0% 88.12 US$132,178
2016-12-19 2016-12-16 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
10,000 -11.6%
74.08
US$740,775 		10,000 -11.6% 74.08 US$740,775
2016-08-22 2016-08-19 S Sale
2.0
MEREDITH THOMAS C
Non-Executive Director
1,020 -100.0%
75.24
US$76,747 		1,020 -100.0% 75.24 US$76,747
2016-08-09 2016-08-08 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
4,000 -4.9%
78.10
US$312,385 		4,000 -4.9% 78.10 US$312,385
2016-05-16 2016-05-13 S Sale Sweetin Marvin L

SR VP, Safety & Enterprise Ser

Officer
4,000 -8.5%
74.16
US$296,640 		4,000 -8.5% 74.16 US$296,640
2015-12-07 2015-12-04 S Sale
2.3
Forsythe Christopher T

Vice President and Controller

Officer
3,000 -17.5%
62.00
US$186,000 		3,000 -17.5% 62.00 US$186,000
2015-02-10 2015-02-10 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
1,000 -1.5%
54.66
US$54,660 		1,000 -1.5% 54.66 US$54,660
2014-12-16 2014-12-12 S Sale
1.6
ECKERT BRET J

SR VICE PRESIDENT & CFO

Officer
5,000 -56.5%
54.00
US$270,000 		5,000 -56.5% 54.00 US$270,000
2014-11-12 2014-11-10 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
1,500 -2.2%
54.28
US$81,420 		1,500 -2.2% 54.28 US$81,420
2014-05-15 2014-05-13 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
3,000 -4.9%
50.03
US$150,095 		3,000 -4.9% 50.03 US$150,095
2013-11-12 2013-11-12 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
1,000 -1.7%
45.75
US$45,754 		1,000 -1.7% 45.75 US$45,754
2013-11-12 2013-11-11 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
1,000 -1.7%
45.71
US$45,710 		1,000 -1.7% 45.71 US$45,710
2013-06-13 2013-06-11 S Sale
2.3
Forsythe Christopher T

Vice President and Controller

Officer
3,900 -40.4%
41.10
US$160,307 		3,900 -40.4% 41.10 US$160,307
2013-03-15 2013-03-13 S Sale
2.0
MEREDITH THOMAS C
Non-Executive Director
4,000 -79.7%
41.16
US$164,640 		4,000 -79.7% 41.16 US$164,640
2013-03-07 2013-03-05 S Sale VAUGHAN CHARLES K

Honorary Director
25,000 -26.4%
40.17
US$1,004,232 		25,000 -26.4% 40.17 US$1,004,232
2013-03-06 2013-03-04 S Sale
3.1
GREGORY LOUIS P

Sr VP, GC & Corp. Secretary

Officer
1,000 -2.3%
38.95
US$38,948 		1,000 -2.3% 38.95 US$38,948
2012-08-16 2012-08-14 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
62,900 -13.2%
36.77
US$2,313,009 		62,900 -13.2% 36.77 US$2,313,009
2012-08-14 2012-08-13 S Sale MEISENHEIMER F E

Sr VP and CFO

Officer
1,880 -5.7%
36.60
US$68,808 		1,880 -5.7% 36.60 US$68,808
2012-06-06 2012-06-05 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
2,500 -6.6%
33.21
US$83,035 		2,500 -6.6% 33.21 US$83,035
2012-03-12 2012-03-09 S Sale MEISENHEIMER F E

Sr VP and CFO

Officer
1,000 -3.7%
31.13
US$31,132 		1,000 -3.7% 31.13 US$31,132
2011-11-29 2011-11-29 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
2,400 -6.6%
33.15
US$79,560 		2,400 -6.6% 33.15 US$79,560
2011-11-29 2011-11-29 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
600 -1.6%
33.15
US$19,891 		600 -1.6% 33.15 US$19,891
2011-11-16 2011-11-14 S Sale MEISENHEIMER F E

Sr VP and CFO

Officer
1,471 -5.1%
35.19
US$51,762 		1,471 -5.1% 35.19 US$51,762
2011-02-14 2011-02-11 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
900 -2.3%
33.51
US$30,160 		900 -2.3% 33.51 US$30,160
2011-02-14 2011-02-11 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
4,100 -9.6%
33.51
US$137,391 		4,100 -9.6% 33.51 US$137,391
2010-11-26 2010-11-26 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
43,362 -10.2%
30.23
US$1,310,708 		43,362 -10.2% 30.23 US$1,310,708
2010-11-24 2010-11-24 S Sale NICHOL PHILLIP E Non-Executive Director
1,000 -11.1%
30.23
US$30,233 		1,000 -11.1% 30.23 US$30,233
2010-11-24 2010-11-24 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
4,948 -1.3%
30.32
US$150,012 		4,948 -1.3% 30.32 US$150,012
2010-11-24 2010-11-24 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
62,282 -14.1%
30.32
US$1,888,247 		62,282 -14.1% 30.32 US$1,888,247
2010-11-24 2010-11-24 S Sale NICHOL PHILLIP E Non-Executive Director
1,000 -10.0%
30.24
US$30,242 		1,000 -10.0% 30.24 US$30,242
2010-11-22 2010-11-22 S Sale MEISENHEIMER F E

Sr VP, CFO and Treasurer

Officer
5,784 -18.7%
30.51
US$176,492 		5,784 -18.7% 30.51 US$176,492
2010-11-22 2010-11-22 S Sale MEISENHEIMER F E

Sr VP, CFO and Treasurer

Officer
800 -2.5%
30.51
US$24,409 		800 -2.5% 30.51 US$24,409
2010-11-10 2010-11-10 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
35,610 -8.6%
30.15
US$1,073,642 		35,610 -8.6% 30.15 US$1,073,642
2010-11-10 2010-11-09 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
64,390 -14.5%
30.17
US$1,942,646 		64,390 -14.5% 30.17 US$1,942,646
2010-11-10 2010-11-09 S Sale
2.3
BEST ROBERT W

Executive Chairman

Executive Director
75,000 -16.5%
30.17
US$2,262,750 		75,000 -16.5% 30.17 US$2,262,750
2010-08-24 2010-08-24 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
8,500 -17.8%
28.40
US$241,400 		8,500 -17.8% 28.40 US$241,400
2010-08-17 2010-08-17 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
4,000 -7.7%
29.00
US$116,000 		4,000 -7.7% 29.00 US$116,000
2010-08-12 2010-08-11 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
3,000 -5.5%
28.90
US$86,700 		3,000 -5.5% 28.90 US$86,700
2010-08-09 2010-08-09 S Sale
3.1
GREGORY LOUIS P

Sr VP and General Counsel

Officer
10,000 -15.5%
29.40
US$294,000 		10,000 -15.5% 29.40 US$294,000
2009-12-15 2009-12-14 S Sale
2.3
Forsythe Christopher T

Vice President and Controller

Officer
300 -7.9%
29.19
US$8,757 		300 -7.9% 29.19 US$8,757
2009-12-15 2009-12-14 S Sale
2.3
Forsythe Christopher T

Vice President and Controller

Officer
1,200 -23.9%
29.18
US$35,016 		1,200 -23.9% 29.18 US$35,016
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