Mackay Leo S. Jr. has filed 40 insider transactions across 2 companies since January 2023.
Most recent transaction: a grant/award of 17 shares of COGNIZANT TECHNOLOGY SOLUTIONS CORP ($CTSH) on February 26, 2026.
Activity breakdown: 0 open-market purchases and 3 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 26, 2026 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 18 | $0.00 | 3,463.3909 | 479,000,000 | 0.51% | 0.00% |
| Feb. 26, 2026 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 15 | $0.00 | 2,901.6140 | 479,000,000 | 0.51% | 0.00% |
| Feb. 26, 2026 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 24 | $0.00 | 4,694.4798 | 479,000,000 | 0.51% | 0.00% |
| Jan. 5, 2026 | AMEREN CORP | $AEE | Mackay Leo S. Jr. | Director | A | Common Stock, $.01 Par Value | 1686 | $0.00 | 11,834.0000 | 270,494,916 | 16.61% | 0.00% |
| Nov. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 14 | $0.00 | 3,445.8884 | 483,000,000 | 0.40% | 0.00% |
| Nov. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 12 | $0.00 | 2,886.9505 | 483,000,000 | 0.40% | 0.00% |
| Nov. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 19 | $0.00 | 4,670.7558 | 483,000,000 | 0.40% | 0.00% |
| Aug. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 12 | $0.00 | 2,875.3818 | 489,000,000 | 0.43% | 0.00% |
| Aug. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 20 | $0.00 | 4,652.0391 | 489,000,000 | 0.43% | 0.00% |
| Aug. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 15 | $0.00 | 3,432.0800 | 489,000,000 | 0.43% | 0.00% |
| June 3, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Class A Common Stock | 606 | $80.32 | 29,982.0000 | 493,000,000 | 2.06% | 0.00% |
| June 3, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 2863 | $0.00 | 2,863.0000 | 493,000,000 | 9999.99% | 0.00% |
| May 28, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 13 | $0.00 | 3,417.3010 | 493,000,000 | 0.39% | 0.00% |
| May 28, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 18 | $0.00 | 4,632.0066 | 493,000,000 | 0.39% | 0.00% |
| Feb. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 12 | $0.00 | 3,404.1852 | 495,000,000 | 0.37% | 0.00% |
| Feb. 26, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 17 | $0.00 | 4,614.2289 | 495,000,000 | 0.37% | 0.00% |
| Feb. 11, 2025 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | S | Class A Common Stock | 1600 | $87.41 | 29,376.0000 | 495,000,000 | 5.17% | 0.00% |
| Jan. 3, 2025 | AMEREN CORP | $AEE | Mackay Leo S. Jr. | Director | A | Common Stock, $.01 Par Value | 1911 | $0.00 | 9,865.0000 | 267,399,999 | 24.03% | 0.00% |
| Nov. 27, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 13 | $0.00 | 3,391.6906 | 496,000,000 | 0.37% | 0.00% |
| Nov. 27, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 17 | $0.00 | 4,597.2930 | 496,000,000 | 0.37% | 0.00% |
| Aug. 28, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 13 | $0.00 | 3,379.1365 | 497,000,000 | 0.39% | 0.00% |
| Aug. 28, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 18 | $0.00 | 4,580.2764 | 497,000,000 | 0.39% | 0.00% |
| June 6, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | M | Restricted Stock Units | 3582 | $0.00 | 0.3388 | 497,000,000 | 99.99% | 0.00% |
| June 6, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | D | Restricted Stock Units | 0 | $66.31 | 0.0000 | 497,000,000 | 100.00% | 0.00% |
| June 6, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | M | Class A Common Stock | 3582 | $0.00 | 30,976.0000 | 497,000,000 | 13.08% | 0.00% |
| June 4, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 3366 | $0.00 | 3,366.0000 | 497,000,000 | 9999.99% | 0.00% |
| June 4, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Class A Common Stock | 723 | $65.35 | 27,394.0000 | 497,000,000 | 2.71% | 0.00% |
| May 29, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 21 | $0.00 | 4,562.4705 | 497,000,000 | 0.45% | 0.00% |
| May 29, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 16 | $0.00 | 3,582.3388 | 497,000,000 | 0.45% | 0.00% |
| Feb. 28, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 17 | $0.00 | 4,541.8629 | 498,000,000 | 0.38% | 0.00% |
| Feb. 28, 2024 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 14 | $0.00 | 3,566.1584 | 498,000,000 | 0.38% | 0.00% |
| Jan. 3, 2024 | AMEREN CORP | $AEE | Mackay Leo S. Jr. | Director | A | Common Stock, $.01 Par Value | 2028 | $0.00 | 7,691.0000 | 263,399,999 | 35.81% | 0.00% |
| Nov. 30, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Deferred Restricted Stock Units | 19 | $0.00 | 4,524.5670 | 509,000,000 | 0.41% | 0.00% |
| Nov. 30, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 15 | $0.00 | 3,552.5783 | 509,000,000 | 0.41% | 0.00% |
| June 9, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | S | Class A Common Stock | 2880 | $61.99 | 26,671.0000 | 509,000,000 | 9.75% | 0.00% |
| June 9, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | S | Class A Common Stock | 1593 | $61.99 | 29,551.0000 | 509,000,000 | 5.11% | 0.00% |
| June 7, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | M | Restricted Stock Units | 2834 | $0.00 | 0.0000 | 509,000,000 | 100.00% | 0.00% |
| June 6, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | A | Restricted Stock Units | 3538 | $0.00 | 3,538.0000 | 509,000,000 | 9999.99% | 0.00% |
| June 7, 2023 | COGNIZANT TECHNOLOGY SOLUTIONS CORP | $CTSH | Mackay Leo S. Jr. | Director | M | Class A Common Stock | 2834 | $0.00 | 31,144.0000 | 509,000,000 | 10.01% | 0.00% |
| Jan. 3, 2023 | AMEREN CORP | $AEE | Mackay Leo S. Jr. | Director | A | Common Stock, $.01 Par Value | 1696 | $0.00 | 5,395.0000 | 259,500,000 | 45.85% | 0.00% |