Christopher Cummiskey, EVP of Southern Co. ($SO), sold shares once on the open market in the last year for a total of $1.1 million. His most recent sale occurred on May 23, 2025. These sales rank 4,695th among 11,678 insiders in the database, well below the average of $8.6 million per insider across about 6.4 transactions. Cummiskey made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 19, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | S | Southern Company Common Stock | 6669 | $96.55 | 36,657.4528 | 1,120,000,000 | 15.39% | 0.00% |
| Feb. 11, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | F | Southern Company Common Stock | 9880 | $90.86 | 42,574.4528 | 1,120,000,000 | 18.84% | 0.00% |
| Feb. 11, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Southern Company Common Stock | 1490 | $0.00 | 44,064.4528 | 1,120,000,000 | 3.50% | 0.00% |
| Feb. 11, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | F | Southern Company Common Stock | 738 | $90.86 | 43,326.4528 | 1,120,000,000 | 1.67% | 0.00% |
| Feb. 11, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Performance Restricted Stock Units | 1441 | $0.00 | 2,880.0000 | 1,120,000,000 | 33.35% | 0.00% |
| Feb. 11, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | A | Southern Company Common Stock | 22178 | $0.00 | 52,454.4528 | 1,120,000,000 | 73.25% | 0.00% |
| Feb. 1, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | F | Southern Company Common Stock | 834 | $89.31 | 30,225.5424 | 1,120,000,000 | 2.69% | 0.00% |
| Feb. 1, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Southern Company Common Stock | 1715 | $0.00 | 31,059.5424 | 1,120,000,000 | 5.84% | 0.00% |
| Jan. 31, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | F | Southern Company Common Stock | 758 | $89.31 | 29,344.5424 | 1,120,000,000 | 2.52% | 0.00% |
| Jan. 31, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Southern Company Common Stock | 1794 | $0.00 | 30,102.5424 | 1,120,000,000 | 6.34% | 0.00% |
| Jan. 31, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Performance Restricted Stock Units | 1674 | $0.00 | 1,674.0000 | 1,120,000,000 | 50.00% | 0.00% |
| Feb. 1, 2026 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Performance Restricted Stock Units | 1537 | $0.00 | 0.0000 | 1,120,000,000 | 100.00% | 0.00% |
| May 23, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | S | Southern Company Common Stock | 12335 | $89.54 | 28,165.1119 | 1,102,000,000 | 30.46% | 0.00% |
| Feb. 19, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | S | Southern Company Common Stock | 944 | $86.00 | 40,500.3362 | 1,102,000,000 | 2.28% | 0.00% |
| Feb. 13, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Southern Company Common Stock | 1708 | $0.00 | 42,208.3362 | 1,102,000,000 | 4.22% | 0.00% |
| Feb. 13, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | M | Performance Restricted Stock Units | 1524 | $0.00 | 0.0000 | 1,102,000,000 | 100.00% | 0.00% |
| Feb. 13, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP | F | Southern Company Common Stock | 764 | $86.78 | 41,444.3362 | 1,102,000,000 | 1.81% | 0.00% |
| Feb. 5, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | A | Southern Company Common Stock | 20690 | $0.00 | 49,737.3362 | 1,102,000,000 | 71.23% | 0.00% |
| Feb. 5, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | M | Southern Company Common Stock | 1736 | $0.00 | 29,901.3362 | 1,102,000,000 | 6.16% | 0.00% |
| Feb. 5, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | F | Southern Company Common Stock | 854 | $83.87 | 29,047.3362 | 1,102,000,000 | 2.86% | 0.00% |
| Feb. 5, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | F | Southern Company Common Stock | 9237 | $83.87 | 40,500.3362 | 1,102,000,000 | 18.57% | 0.00% |
| Feb. 5, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | M | Performance Restricted Stock Units | 1674 | $0.00 | 3,348.0000 | 1,102,000,000 | 33.33% | 0.00% |
| Feb. 4, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCO | S | Southern Company Common Stock | 837 | $83.32 | 28,165.3362 | 1,102,000,000 | 2.89% | 0.00% |
| Feb. 1, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | Chairman, President & CEO, SCS | M | Southern Company Common Stock | 1659 | $0.00 | 29,824.3362 | 1,102,000,000 | 5.89% | 0.00% |
| Feb. 1, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | Chairman, President & CEO, SCS | M | Performance Restricted Stock Units | 1537 | $0.00 | 1,537.0000 | 1,102,000,000 | 50.00% | 0.00% |
| Feb. 1, 2025 | SOUTHERN CO | $SO | Cummiskey Christopher | Chairman, President & CEO, SCS | F | Southern Company Common Stock | 822 | $83.95 | 29,002.3362 | 1,102,000,000 | 2.76% | 0.00% |
| Feb. 16, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 902 | $65.99 | 28,076.8145 | 1,098,000,000 | 3.11% | 0.00% |
| Feb. 15, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 12985 | $67.18 | 28,978.8145 | 1,098,000,000 | 30.94% | 0.00% |
| Feb. 13, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Performance Restricted Stock Units | 1524 | $0.00 | 1,524.0000 | 1,098,000,000 | 50.00% | 0.00% |
| Feb. 13, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 744 | $67.51 | 41,963.8145 | 1,098,000,000 | 1.74% | 0.00% |
| Feb. 13, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1646 | $0.00 | 42,707.8145 | 1,098,000,000 | 4.01% | 0.00% |
| Feb. 12, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 883 | $66.94 | 41,061.8145 | 1,098,000,000 | 2.11% | 0.00% |
| Feb. 7, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1602 | $0.00 | 42,663.8145 | 1,098,000,000 | 3.90% | 0.00% |
| Feb. 7, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 719 | $66.95 | 41,944.8145 | 1,098,000,000 | 1.69% | 0.00% |
| Feb. 7, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Performance Restricted Stock Units | 1538 | $0.00 | 3,074.0000 | 1,098,000,000 | 33.35% | 0.00% |
| Feb. 7, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 10670 | $66.95 | 41,061.8145 | 1,098,000,000 | 20.63% | 0.00% |
| Feb. 7, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | A | Southern Company Common Stock | 23655 | $0.00 | 51,731.8145 | 1,098,000,000 | 84.25% | 0.00% |
| Feb. 6, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 899 | $67.06 | 28,076.8145 | 1,098,000,000 | 3.10% | 0.00% |
| Feb. 3, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1794 | $0.00 | 29,880.8145 | 1,098,000,000 | 6.39% | 0.00% |
| Feb. 3, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 905 | $68.65 | 28,975.8145 | 1,098,000,000 | 3.03% | 0.00% |
| Feb. 3, 2024 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Performance Restricted Stock Units | 1592 | $0.00 | 0.0000 | 1,098,000,000 | 100.00% | 0.00% |
| Aug. 29, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 5000 | $68.30 | 27,975.3219 | 1,081,000,000 | 15.16% | 0.00% |
| Feb. 16, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 1282 | $66.60 | 32,865.1887 | 1,081,000,000 | 3.75% | 0.00% |
| Feb. 13, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Performance Restricted Stock Units | 1524 | $0.00 | 3,048.0000 | 1,081,000,000 | 33.33% | 0.00% |
| Feb. 13, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 715 | $67.13 | 34,147.1887 | 1,081,000,000 | 2.05% | 0.00% |
| Feb. 13, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1582 | $0.00 | 34,862.1887 | 1,081,000,000 | 4.75% | 0.00% |
| Feb. 13, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 4481 | $67.13 | 33,280.1887 | 1,081,000,000 | 11.87% | 0.00% |
| Feb. 13, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | A | Southern Company Common Stock | 9934 | $0.00 | 37,761.1887 | 1,081,000,000 | 35.70% | 0.00% |
| Feb. 11, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 753 | $0.00 | 28,165.1887 | 1,081,000,000 | 2.75% | 0.00% |
| Feb. 11, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Co Restricted Stock Units | 667 | $0.00 | 0.0000 | 1,081,000,000 | 100.00% | 0.00% |
| Feb. 11, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 338 | $66.88 | 27,827.1887 | 1,081,000,000 | 1.20% | 0.00% |
| Feb. 8, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 852 | $67.31 | 27,412.1887 | 1,081,000,000 | 3.01% | 0.00% |
| Feb. 3, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Performance Restricted Stock Units | 1591 | $0.00 | 1,592.0000 | 1,081,000,000 | 49.98% | 0.00% |
| Feb. 3, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 868 | $67.27 | 28,264.1887 | 1,081,000,000 | 2.98% | 0.00% |
| Feb. 3, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1720 | $0.00 | 29,132.1887 | 1,081,000,000 | 6.27% | 0.00% |
| Jan. 4, 2023 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | S | Southern Company Common Stock | 1027 | $72.03 | 27,359.4680 | 1,081,000,000 | 3.62% | 0.00% |
| Dec. 31, 2022 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Company Common Stock | 1880 | $0.00 | 29,239.4680 | 0 | 6.87% | 0.00% |
| Dec. 31, 2022 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | F | Southern Company Common Stock | 853 | $71.41 | 28,386.4680 | 0 | 2.92% | 0.00% |
| Dec. 31, 2022 | SOUTHERN CO | $SO | Cummiskey Christopher | EVP & CCCS Officer | M | Southern Co Restricted Stock Units | 1534 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |