United States Electric Utilities & IPPs

Southern Co (SO)

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Southern Co experienced eight insider trading transactions over the past ninety days, totaling 379,038.66 USD in sales. These divestments involved officers including Sterling Spainhour and Matthew Kim. This activity follows a recent earnings report where the firm exceeded expectations by 11.88 percent, while the stock price remains relatively stable.
Ticker: SO Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Southern Co. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Sale 6 Aug 2026
Value US$3,577,283.71 | Price 360.30 | Shares 65,466 (+46.9%)
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
2026-08-07 2026-08-06 S Sale
3.1
Spainhour Sterling A Jr.

EVP & CLO

Officer
65,466 +46.9%
360.30
US$3,577,284 		65,466 +46.9% 360.30 US$3,577,284
2026-08-06 2026-08-06 PrS Proposed sale
3.1
STERLING SPAINHOUR

OFFICER

Officer
81,179
244.62
US$2,493,484 		81,179 244.62 US$2,493,484
2026-08-04 2026-08-03 S Sale
2.1
Kim Matthew M.

Comptroller

Officer
11,245 +11.1%
475.05
US$2,125,661 		11,245 +11.1% 475.05 US$2,125,661
2026-08-03 2026-08-03 PrS Proposed sale
2.1
Matthew Kim

Officer

Officer
1,000
94.28
US$100,000 		1,000 94.28 US$100,000
2026-08-03 2026-08-03 PrS Proposed sale
2.1
Matthew Kim

Officer

Officer
1,000
94.28
US$100,000 		1,000 94.28 US$100,000
2026-07-02 2026-07-01 S Sale
2.1
Kim Matthew M.

Comptroller

Officer
100 -1.5%
95.77
US$9,577 		100 -1.5% 95.77 US$9,577
2026-07-01 2026-07-01 PrS Proposed sale
2.1
MATTHEW KIM

OFFICER

Officer
100
95.77
US$9,577 		100 95.77 US$9,577
2026-06-01 2026-06-01 PrS Proposed sale
2.1
Matthew M. Kim

Officer

Officer
100
91.16
US$9,116 		100 91.16 US$9,116
2026-06-01 2026-06-01 S Sale
2.1
Kim Matthew M.

Comptroller

Officer
100 -1.5%
91.16
US$9,116 		100 -1.5% 91.16 US$9,116
2026-05-04 2026-05-01 S Sale
2.1
Kim Matthew M.

Comptroller

Officer
100 -1.5%
96.57
US$9,657 		100 -1.5% 96.57 US$9,657
2026-05-01 2026-05-01 PrS Proposed sale
2.1
Matthew Kim

Officer

Officer
100
96.57
US$9,657 		100 96.57 US$9,657
2026-03-31 2026-03-30 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
25,000 -19.4%
96.67
US$2,416,750 		25,000 -19.4% 96.67 US$2,416,750
2026-03-30 2026-03-30 PrS Proposed sale
3.0
KIMBERLY GREENE

OFFICER

Officer
25,000
96.67
US$2,416,750 		25,000 96.67 US$2,416,750
2026-03-19 2026-03-19 PrS Proposed sale
2.5
Christopher Cummiskey

Officer

Officer
6,669
96.55
US$643,892 		6,669 96.55 US$643,892
2026-03-19 2026-03-19 S Sale
2.5
Cummiskey Christopher

EVP

Officer
6,669 -17.8%
96.55
US$643,892 		6,669 -17.8% 96.55 US$643,892
2026-03-19 2026-03-18 S Sale
2.9
Connally Stan W

EVP & COO

Officer
12,500 -7.2%
97.13
US$1,214,125 		12,500 -7.2% 97.13 US$1,214,125
2026-03-18 2026-03-18 PrS Proposed sale
2.9
Stanley Connally

Officer

Officer
12,500
97.73
US$1,221,625 		12,500 97.73 US$1,221,625
2026-02-25 2026-02-24 S Sale
2.1
Kim Matthew M.

Comptroller

Officer
5,123 -42.7%
95.15
US$487,453 		5,123 -42.7% 95.15 US$487,453
2026-02-24 2026-02-24 PrS Proposed sale
2.1
Matthew M. Kim

Officer

Officer
5,123
95.15
US$487,453 		5,123 95.15 US$487,453
2025-10-01 2025-09-30 S Sale
3.5
Anderson Bryan D

EVP

Officer
6,206 -10.8%
93.83
US$582,309 		6,206 -10.8% 93.83 US$582,309
2025-08-12 2025-08-11 S Sale
3.1
Spainhour Sterling A Jr.

EVP & CLO

Officer
2,380 -12.0%
95.02
US$226,148 		2,380 -12.0% 95.02 US$226,148
2025-08-11 2025-08-11 PrS Proposed sale
3.1
Spainhour Sterling A Jr.

Officer

Officer
2,380
95.02
US$226,148 		2,380 95.02 US$226,148
2025-07-22 2025-07-21 PrS Proposed sale
3.0
Greene Kimberly S,

Officer

Officer
13,158
95.00
US$1,250,010 		13,158 95.00 US$1,250,010
2025-07-22 2025-07-21 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
13,158 -12.3%
95.00
US$1,250,010 		13,158 -12.3% 95.00 US$1,250,010
2025-06-11 2025-06-11 PrS Proposed sale
2.6
DAVIS MARTIN BERNARD

Former Officer

Officer
30,000
89.31
US$2,679,241 		30,000 89.31 US$2,679,241
2025-06-03 2025-06-03 PrS Proposed sale
2.6
DAVIS MARTIN BERNARD

Officer

Officer
1,115
89.94
US$100,283 		1,115 89.94 US$100,283
2025-05-27 2025-05-23 S Sale
2.5
Cummiskey Christopher

EVP

Officer
12,335 -35.4%
89.54
US$1,104,476 		12,335 -35.4% 89.54 US$1,104,476
2025-05-23 2025-05-23 PrS Proposed sale
2.5
Cummiskey Christopher

Officer

Officer
12,335
89.54
US$1,104,476 		12,335 89.54 US$1,104,476
2025-04-01 2025-03-31 S Sale
2.9
Connally Stan W

EVP & COO

Officer
12,500 -7.7%
92.24
US$1,153,000 		12,500 -7.7% 92.24 US$1,153,000
2025-03-11 2025-03-10 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
32,190 -23.2%
93.12
US$2,997,533 		32,190 -23.2% 93.12 US$2,997,533
2025-03-10 2025-03-10 PrS Proposed sale
3.0
Greene Kimberly S,

Officer

Officer
32,190
93.12
US$2,997,582 		32,190 93.12 US$2,997,582
2025-03-04 2025-03-03 S Sale
2.7
WOMACK CHRISTOPHER C

Chairman, President & CEO

Officer
24,407 -21.8%
90.13
US$2,199,803 		24,407 -21.8% 90.13 US$2,199,803
2025-03-04 2025-03-03 S Sale
2.6
DAVIS MARTIN BERNARD

EVP & CIO

Officer
1,125 -1.1%
89.61
US$100,811 		1,125 -1.1% 89.61 US$100,811
2025-03-03 2025-03-03 PrS Proposed sale
2.6
DAVIS MARTIN BERNARD

Officer

Officer
1,125
89.61
US$100,811 		1,125 89.61 US$100,811
2025-02-26 2025-02-25 S Sale
2.7
WOMACK CHRISTOPHER C

Chairman, President & CEO

Officer
1,593 -1.4%
90.00
US$143,370 		1,593 -1.4% 90.00 US$143,370
2025-02-25 2025-02-25 PrS Proposed sale
2.7
WOMACK CHRISTOPHER C

Officer

Officer
26,000
90.00
US$2,340,098 		26,000 90.00 US$2,340,098
2025-02-20 2025-02-19 S Sale
2.5
Cummiskey Christopher

EVP

Officer
944 -2.6%
86.00
US$81,184 		944 -2.6% 86.00 US$81,184
2025-02-19 2025-02-19 PrS Proposed sale
2.5
Cummiskey Christopher

Officer

Officer
944
86.00
US$81,184 		944 86.00 US$81,184
2025-02-12 2025-02-11 S Sale
1.0
Peoples James Jeffrey

Chairman, President & CEO, APC

Officer
14,540 -52.3%
86.00
US$1,250,440 		14,540 -52.3% 86.00 US$1,250,440
2025-02-11 2025-02-11 PrS Proposed sale
1.0
Peoples James Jeffrey

Officer

Officer
14,540
86.00
US$1,250,440 		14,540 86.00 US$1,250,440
2025-02-05 2025-02-04 S Sale
2.5
Cummiskey Christopher

EVP & CCO

Officer
837 -3.6%
83.32
US$69,739 		837 -3.6% 83.32 US$69,739
2025-02-04 2025-02-04 PrS Proposed sale
2.5
Cummiskey Christopher

Officer

Officer
837
83.32
US$69,739 		837 83.32 US$69,739
2024-12-06 2024-12-05 S Sale
2.6
DAVIS MARTIN BERNARD

EVP and CIO

Officer
1,170 -1.3%
85.90
US$100,503 		1,170 -1.3% 85.90 US$100,503
2024-12-06 2024-12-05 S Sale
2.7
WOMACK CHRISTOPHER C

CEO, President and Chairman

Officer
14,000 -15.9%
86.18
US$1,206,520 		14,000 -15.9% 86.18 US$1,206,520
2024-12-05 2024-12-05 PrS Proposed sale
2.7
WOMACK CHRISTOPHER C

Officer

Officer
14,000
86.18
US$1,206,499 		14,000 86.18 US$1,206,499
2024-12-05 2024-12-05 PrS Proposed sale
2.6
DAVIS MARTIN BERNARD

Officer

Officer
1,170
85.90
US$100,503 		1,170 85.90 US$100,503
2024-11-05 2024-11-04 S Sale
3.1
Spainhour Sterling A Jr.

EVP, Chief Legal Officer & CCO

Officer
793 -6.3%
88.54
US$70,212 		793 -6.3% 88.54 US$70,212
2024-11-04 2024-11-04 PrS Proposed sale
3.1
Spainhour Sterling A Jr.

Officer

Officer
793
88.54
US$70,212 		793 88.54 US$70,212
2024-10-08 2024-10-04 S Sale
3.0
Kerr, II James Y

Chairman, President & CEO, GAS

Officer
30,000 -17.1%
89.64
US$2,689,200 		30,000 -17.1% 89.64 US$2,689,200
2024-10-04 2024-10-04 PrS Proposed sale
3.0
Kerr, II James Y

Officer

Officer
30,000
89.64
US$2,689,277 		30,000 89.64 US$2,689,277
2024-09-09 2024-09-06 S Sale
3.5
Anderson Bryan D

EVP & Pres. External Affairs

Officer
6,565 -12.9%
89.54
US$587,830 		6,565 -12.9% 89.54 US$587,830
2024-09-06 2024-09-06 PrS Proposed sale
3.5
Anderson Bryan D

Officer

Officer
6,565
89.54
US$587,830 		6,565 89.54 US$587,830
2024-09-03 2024-09-03 PrS Proposed sale
2.9
Stephen E. Kuczynski

Officer

Officer
24,000
85.80
US$2,059,200 		24,000 85.80 US$2,059,200
2024-08-06 2024-08-05 S Sale
3.1
Spainhour Sterling A Jr.

EVP, Chief Legal Officer & CCO

Officer
2,380 -16.0%
88.99
US$211,796 		2,380 -16.0% 88.99 US$211,796
2024-08-05 2024-08-05 PrS Proposed sale
3.1
Spainhour Sterling A Jr.

Officer

Officer
2,380
88.99
US$211,796 		2,380 88.99 US$211,796
2024-07-30 2024-07-30 PrS Proposed sale
1.8
THE ERNEST J. MONIZ 2018 TRUST

Director

Non-Executive Director
8,948
83.01
US$742,816 		8,948 83.01 US$742,816
2024-07-16 2024-07-16 PrS Proposed sale
1.8
THE ERNEST J. MONIZ 2018 TRUST

Director

Non-Executive Director
10,000
80.88
US$808,793 		10,000 80.88 US$808,793
2024-07-08 2024-07-05 S Sale
2.6
Wilson Anthony L

President & CEO, MPC

Officer
6,900 -7.5%
77.61
US$535,509 		6,900 -7.5% 77.61 US$535,509
2024-07-05 2024-07-05 PrS Proposed sale
2.6
Wilson Anthony L

Officer

Officer
6,900
77.83
US$537,027 		6,900 77.83 US$537,027
2024-07-03 2024-07-03 PrS Proposed sale
0.7
Drake Sloane N

Officer

Officer
12,000
77.61
US$931,320 		12,000 77.61 US$931,320
2024-07-03 2024-07-03 S Sale
0.7
Drake Sloane N

EVP, CHRO

Officer
12,000 -41.7%
77.61
US$931,320 		12,000 -41.7% 77.61 US$931,320
2024-05-02 2024-05-02 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
10,874 -8.9%
75.01
US$815,659 		10,874 -8.9% 75.01 US$815,659
2024-05-02 2024-05-02 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
10,874 -8.9%
75.01
US$815,659 		10,874 -8.9% 75.01 US$815,659
2024-05-02 2024-05-01 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
9,126 -7.0%
75.04
US$684,815 		9,126 -7.0% 75.04 US$684,815
2024-05-02 2024-05-01 S Sale
3.0
Greene Kimberly S,

Chairman, President & CEO, GPC

Officer
9,126 -7.0%
75.04
US$684,815 		9,126 -7.0% 75.04 US$684,815
2024-03-12 2024-03-11 PlS Planned sale
2.9
Kuczynski Stephen E

CEO, Southern Nuclear

Officer
5,000 -3.8%
68.92
US$344,600 		5,000 -3.8% 68.92 US$344,600
2024-03-11 2024-03-11 PrS Proposed sale
2.9
Kuczynski Stephen E

Officer

Officer
5,000
68.92
US$344,600 		5,000 68.92 US$344,600
2024-02-16 2024-02-16 S Sale
2.5
Cummiskey Christopher

EVP & CCCS Officer

Officer
902 -3.9%
65.99
US$59,523 		902 -3.9% 65.99 US$59,523
2024-02-16 2024-02-15 S Sale
2.5
Cummiskey Christopher

EVP & CCCS Officer

Officer
12,985 -35.7%
67.18
US$872,332 		12,985 -35.7% 67.18 US$872,332
2024-02-15 2024-02-15 PrS Proposed sale
2.5
Cummiskey Christopher

Officer

Officer
13,887
67.18
US$932,929 		13,887 67.18 US$932,929
2024-02-13 2024-02-12 PlS Planned sale
2.9
Kuczynski Stephen E

CEO, Southern Nuclear

Officer
5,000 -3.7%
66.94
US$334,700 		5,000 -3.7% 66.94 US$334,700
2024-02-13 2024-02-12 S Sale
2.5
Cummiskey Christopher

EVP & CCCS Officer

Officer
883 -2.4%
66.94
US$59,108 		883 -2.4% 66.94 US$59,108
2024-02-12 2024-02-12 PrS Proposed sale
2.9
Kuczynski Stephen E

Officer

Officer
5,000
66.94
US$334,700 		5,000 66.94 US$334,700
2024-02-12 2024-02-12 PrS Proposed sale
2.5
Cummiskey Christopher

Officer

Officer
883
66.94
US$59,108 		883 66.94 US$59,108
2024-02-07 2024-02-06 S Sale
2.5
Cummiskey Christopher

EVP & CCCS Officer

Officer
899 -3.8%
67.06
US$60,287 		899 -3.8% 67.06 US$60,287
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