Peterson Michael, Executive Vice President at SEI Investments Co. ($SEIC), sold about $7.4 million in company shares across five open market transactions over the past year. His most recent sale occurred on November 12, 2025. These sales rank 1,425th among nearly 12,000 individual insiders by total value sold, below the average of $8.6 million per insider and 6 transactions. He 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 5, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | F | Common Stock | 1063 | $81.25 | 20,418.7854 | 127,684,000 | 4.95% | 0.00% |
| Dec. 12, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | A | Common Stock | 7711 | $0.00 | 21,481.7854 | 127,684,000 | 56.00% | 0.01% |
| Dec. 12, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | A | Option to Purchase Common Stock | 43000 | $0.00 | 43,000.0000 | 127,684,000 | 9999.99% | 0.03% |
| Nov. 12, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 25000 | $0.00 | 0.0000 | 127,684,000 | 100.00% | 0.02% |
| Nov. 12, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 25000 | $54.34 | 38,500.0000 | 127,684,000 | 185.19% | 0.02% |
| Nov. 12, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 25000 | $84.21 | 13,500.0000 | 127,684,000 | 64.94% | 0.02% |
| Aug. 7, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 7089 | $61.81 | 20,589.0000 | 131,727,000 | 52.51% | 0.01% |
| Aug. 7, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 7089 | $0.00 | 0.0000 | 131,727,000 | 100.00% | 0.01% |
| Aug. 7, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 7089 | $88.55 | 13,500.0000 | 131,727,000 | 34.43% | 0.01% |
| Aug. 5, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 684 | $61.81 | 14,184.0000 | 131,727,000 | 5.07% | 0.00% |
| Aug. 5, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 684 | $88.69 | 13,500.0000 | 131,727,000 | 4.82% | 0.00% |
| Aug. 5, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 684 | $0.00 | 7,089.0000 | 131,727,000 | 8.80% | 0.00% |
| July 31, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 4727 | $61.81 | 18,227.0000 | 131,727,000 | 35.01% | 0.00% |
| July 31, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 4727 | $88.51 | 13,500.0000 | 131,727,000 | 25.93% | 0.00% |
| July 31, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 4727 | $0.00 | 7,773.0000 | 131,727,000 | 37.82% | 0.00% |
| May 15, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 37500 | $0.00 | 0.0000 | 131,727,000 | 100.00% | 0.03% |
| May 15, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 12500 | $60.46 | 63,500.0000 | 131,727,000 | 24.51% | 0.01% |
| May 15, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 37500 | $56.54 | 51,000.0000 | 131,727,000 | 277.78% | 0.03% |
| May 15, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | COMMON STOCK ( RIGHT TO PURCHASE) | 12500 | $0.00 | 0.0000 | 131,727,000 | 100.00% | 0.01% |
| May 15, 2025 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 50000 | $84.27 | 13,500.0000 | 131,727,000 | 78.74% | 0.04% |
| Dec. 12, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | A | Common Stock | 7000 | $0.00 | 13,500.0000 | 131,830,000 | 107.69% | 0.01% |
| Dec. 12, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | A | Option to Purchase Common Stock | 36000 | $0.00 | 36,000.0000 | 131,830,000 | 9999.99% | 0.03% |
| Nov. 6, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Option to Purchase Common Stock | 10000 | $0.00 | 0.0000 | 131,830,000 | 100.00% | 0.01% |
| Nov. 6, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | M | Common Stock | 10000 | $64.43 | 16,500.0000 | 131,830,000 | 153.85% | 0.01% |
| Nov. 6, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EXECUTIVE VICE PRESIDENT | S | Common Stock | 10000 | $79.14 | 6,500.0000 | 131,830,000 | 60.61% | 0.01% |
| Oct. 25, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Option to Purchase Common Stock | 25000 | $0.00 | 0.0000 | 131,830,000 | 100.00% | 0.02% |
| Oct. 25, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | S | Common Stock | 4562 | $75.04 | 6,500.0000 | 131,830,000 | 41.24% | 0.00% |
| Oct. 25, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | S | Common Stock | 20438 | $74.49 | 11,062.0000 | 131,830,000 | 64.88% | 0.02% |
| Oct. 25, 2024 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Common Stock | 25000 | $55.73 | 31,500.0000 | 131,830,000 | 384.62% | 0.02% |
| Dec. 15, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 12500 | $0.00 | 12,500.0000 | 137,423,000 | 9999.99% | 0.01% |
| Dec. 15, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 12500 | $0.00 | 12,500.0000 | 137,423,000 | 9999.99% | 0.01% |
| Dec. 15, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Common Stock | 4000 | $0.00 | 6,500.0000 | 137,423,000 | 160.00% | 0.00% |
| Sept. 19, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Common Stock | 25000 | $54.34 | 27,500.0000 | 137,423,000 | 1000.00% | 0.02% |
| Sept. 19, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | S | Common Stock | 25000 | $61.29 | 2,500.0000 | 137,423,000 | 90.91% | 0.02% |
| Sept. 19, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Option to Purchase Common Stock | 25000 | $0.00 | 0.0000 | 137,423,000 | 100.00% | 0.02% |
| June 18, 2019 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 25000 | $0.00 | 25,000.0000 | 0 | 9999.99% | 0.00% |
| June 18, 2020 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 25000 | $0.00 | 25,000.0000 | 0 | 9999.99% | 0.00% |
| June 18, 2020 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 25000 | $0.00 | 25,000.0000 | 0 | 9999.99% | 0.00% |
| June 18, 2019 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 25000 | $0.00 | 25,000.0000 | 0 | 9999.99% | 0.00% |
| June 18, 2018 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| June 18, 2018 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| July 28, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Common Stock | 10000 | $48.47 | 12,500.0000 | 137,423,000 | 400.00% | 0.01% |
| July 28, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | S | Common Stock | 10000 | $63.20 | 2,500.0000 | 137,423,000 | 80.00% | 0.01% |
| July 28, 2023 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | M | Option to Purchase Common Stock | 10000 | $0.00 | 10,000.0000 | 137,423,000 | 50.00% | 0.01% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Common Stock | 2500 | $0.00 | 2,500.0000 | 0 | 9999.99% | 0.00% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 12500 | $0.00 | 12,500.0000 | 0 | 9999.99% | 0.00% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | Peterson Michael | EVP and General Counsel | A | Option to Purchase Common Stock | 12500 | $0.00 | 12,500.0000 | 0 | 9999.99% | 0.00% |