West Alfred P. Jr. sold SEI Investments Co. ($SEIC) shares on the open market nine times over the last year, totaling about $19 million. His most recent sale occurred on March 11, 2026. These sales rank him 704th among 11,678 insiders by total value sold, above the average of $8.6 million per insider and 6.4 transactions. He made no open market purchases in 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 11, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | S | Common Stock | 1371 | $79.94 | 6,875,783.0000 | 127,684,000 | 0.02% | 0.00% |
| March 10, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | S | Common Stock | 25391 | $79.97 | 6,912,661.0000 | 127,684,000 | 0.37% | 0.02% |
| March 11, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | S | Common Stock | 6076 | $79.11 | 6,877,154.0000 | 127,684,000 | 0.09% | 0.00% |
| March 10, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | S | Common Stock | 178 | $78.88 | 6,938,052.0000 | 127,684,000 | 0.00% | 0.00% |
| March 10, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | S | Common Stock | 29431 | $80.47 | 6,883,230.0000 | 127,684,000 | 0.43% | 0.02% |
| Jan. 1, 2026 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Other | F | Common Stock | 3482 | $82.02 | 6,938,230.0000 | 127,684,000 | 0.05% | 0.00% |
| Dec. 5, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | F | Common Stock | 1100 | $81.25 | 6,941,712.0000 | 127,684,000 | 0.02% | 0.00% |
| Dec. 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | STOCK OPTION (RIGHT TO PURCHASE) | 30000 | $0.00 | 0.0000 | 127,684,000 | 100.00% | 0.02% |
| Dec. 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 24770 | $80.87 | 6,942,812.0000 | 127,684,000 | 0.36% | 0.02% |
| Dec. 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Common Stock | 30000 | $53.34 | 6,967,582.0000 | 127,684,000 | 0.43% | 0.02% |
| May 29, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 1628 | $85.21 | 6,937,582.0000 | 131,727,000 | 0.02% | 0.00% |
| May 29, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 64498 | $84.26 | 6,939,210.0000 | 131,727,000 | 0.92% | 0.05% |
| May 28, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 75000 | $85.78 | 7,003,708.0000 | 131,727,000 | 1.06% | 0.06% |
| March 5, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 1372 | $76.28 | 7,078,708.0000 | 131,727,000 | 0.02% | 0.00% |
| March 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 31821 | $78.82 | 7,201,101.0000 | 131,727,000 | 0.44% | 0.02% |
| March 4, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 13855 | $77.20 | 7,080,080.0000 | 131,727,000 | 0.20% | 0.01% |
| March 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 19405 | $79.55 | 7,181,696.0000 | 131,727,000 | 0.27% | 0.01% |
| March 3, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 21616 | $80.30 | 7,160,080.0000 | 131,727,000 | 0.30% | 0.02% |
| March 4, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 18427 | $75.77 | 7,141,653.0000 | 131,727,000 | 0.26% | 0.01% |
| March 4, 2025 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 47718 | $76.49 | 7,093,935.0000 | 131,727,000 | 0.67% | 0.04% |
| Dec. 13, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 12703 | $86.22 | 7,285,464.0000 | 131,830,000 | 0.17% | 0.01% |
| Dec. 16, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 34672 | $85.34 | 7,236,660.0000 | 131,830,000 | 0.48% | 0.03% |
| Dec. 13, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 80955 | $85.64 | 7,298,167.0000 | 131,830,000 | 1.10% | 0.06% |
| Dec. 16, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 3738 | $86.09 | 7,232,922.0000 | 131,830,000 | 0.05% | 0.00% |
| Dec. 13, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 500 | $87.25 | 7,284,964.0000 | 131,830,000 | 0.01% | 0.00% |
| Dec. 16, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 13632 | $84.72 | 7,271,332.0000 | 131,830,000 | 0.19% | 0.01% |
| Dec. 12, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | A | Common Stock | 7600 | $0.00 | 7,379,122.0000 | 131,830,000 | 0.10% | 0.01% |
| Dec. 4, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Option to Purchase Common Stock | 35000 | $0.00 | 0.0000 | 131,830,000 | 100.00% | 0.03% |
| Dec. 4, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Common Stock | 35000 | $40.64 | 7,396,516.0000 | 131,830,000 | 0.48% | 0.03% |
| Dec. 4, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 19010 | $82.49 | 7,377,506.0000 | 131,830,000 | 0.26% | 0.01% |
| Dec. 6, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 5984 | $84.23 | 7,371,522.0000 | 131,830,000 | 0.08% | 0.00% |
| Nov. 11, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 7099 | $80.81 | 7,361,516.0000 | 131,830,000 | 0.10% | 0.01% |
| Nov. 7, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 30000 | $80.24 | 7,468,615.0000 | 131,830,000 | 0.40% | 0.02% |
| Nov. 8, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 100000 | $80.26 | 7,368,615.0000 | 131,830,000 | 1.34% | 0.08% |
| Aug. 29, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 5670 | $67.50 | 7,498,615.0000 | 133,728,000 | 0.08% | 0.00% |
| Aug. 28, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 61000 | $67.36 | 7,504,285.0000 | 133,728,000 | 0.81% | 0.05% |
| Aug. 27, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 40129 | $66.90 | 7,565,285.0000 | 133,728,000 | 0.53% | 0.03% |
| Aug. 23, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 27419 | $67.48 | 7,649,577.0000 | 133,728,000 | 0.36% | 0.02% |
| Aug. 26, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 44163 | $67.55 | 7,605,414.0000 | 133,728,000 | 0.58% | 0.03% |
| May 14, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 475 | $67.91 | 7,676,996.0000 | 133,728,000 | 0.01% | 0.00% |
| May 13, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 48000 | $68.09 | 7,677,471.0000 | 133,728,000 | 0.62% | 0.04% |
| May 10, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 70000 | $68.60 | 7,725,471.0000 | 133,728,000 | 0.90% | 0.05% |
| May 9, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 70000 | $68.62 | 7,795,471.0000 | 133,728,000 | 0.89% | 0.05% |
| March 28, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 19363 | $72.14 | 7,865,471.0000 | 133,728,000 | 0.25% | 0.01% |
| March 26, 2024 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 150000 | $70.75 | 7,884,834.0000 | 133,728,000 | 1.87% | 0.11% |
| Dec. 15, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | 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 | WEST ALFRED P JR | Executive Chairman | A | Common Stock | 4000 | $0.00 | 8,034,834.0000 | 137,423,000 | 0.05% | 0.00% |
| Dec. 15, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | A | Option to Purchase Common Stock | 12500 | $0.00 | 12,500.0000 | 137,423,000 | 9999.99% | 0.01% |
| Dec. 4, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 4500 | $59.96 | 8,031,034.0000 | 137,423,000 | 0.06% | 0.00% |
| Dec. 1, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Common Stock | 22500 | $33.76 | 8,042,377.0000 | 137,423,000 | 0.28% | 0.02% |
| Dec. 1, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Common Stock | 16281 | $33.76 | 8,058,658.0000 | 137,423,000 | 0.20% | 0.01% |
| Dec. 1, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 29343 | $59.78 | 8,029,315.0000 | 137,423,000 | 0.36% | 0.02% |
| Dec. 4, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Common Stock | 6219 | $33.76 | 8,035,534.0000 | 137,423,000 | 0.08% | 0.00% |
| Dec. 4, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 200 | $60.17 | 8,030,834.0000 | 137,423,000 | 0.00% | 0.00% |
| Dec. 1, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Stock Option (Right to Purchase) | 22500 | $0.00 | 0.0000 | 137,423,000 | 100.00% | 0.02% |
| Dec. 1, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Stock Option (Right to Purchase) | 16281 | $0.00 | 6,219.0000 | 137,423,000 | 72.36% | 0.01% |
| Dec. 4, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | M | Stock Option (Right to Purchase) | 6219 | $0.00 | 0.0000 | 137,423,000 | 100.00% | 0.00% |
| Nov. 22, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 18559 | $57.91 | 8,019,877.0000 | 137,423,000 | 0.23% | 0.01% |
| Nov. 20, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 49946 | $58.24 | 8,128,914.0000 | 137,423,000 | 0.61% | 0.04% |
| Nov. 21, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 90478 | $57.85 | 8,038,436.0000 | 137,423,000 | 1.11% | 0.07% |
| Nov. 17, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 48159 | $58.00 | 8,178,860.0000 | 137,423,000 | 0.59% | 0.04% |
| Sept. 12, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 900 | $61.02 | 8,270,211.0000 | 137,423,000 | 0.01% | 0.00% |
| Sept. 13, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 43192 | $60.14 | 8,227,019.0000 | 137,423,000 | 0.52% | 0.03% |
| Sept. 11, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 18808 | $61.02 | 8,340,651.0000 | 137,423,000 | 0.22% | 0.01% |
| Sept. 12, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 69540 | $60.49 | 8,271,111.0000 | 137,423,000 | 0.83% | 0.05% |
| June 23, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 60270 | $56.96 | 8,359,459.0000 | 137,423,000 | 0.72% | 0.04% |
| June 21, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 58687 | $58.68 | 8,461,033.0000 | 137,423,000 | 0.69% | 0.04% |
| June 22, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 41304 | $57.68 | 8,419,729.0000 | 137,423,000 | 0.49% | 0.03% |
| June 20, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 46647 | $58.99 | 8,519,720.0000 | 137,423,000 | 0.54% | 0.03% |
| April 4, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | G | Common Stock | 1761 | $0.00 | 8,566,367.0000 | 137,423,000 | 0.02% | 0.00% |
| March 29, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 15659 | $56.06 | 8,568,128.0000 | 137,423,000 | 0.18% | 0.01% |
| March 23, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 36462 | $55.40 | 8,749,687.0000 | 0 | 0.41% | 0.00% |
| March 24, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 100000 | $55.59 | 8,649,687.0000 | 0 | 1.14% | 0.00% |
| March 27, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 65900 | $55.45 | 8,583,787.0000 | 0 | 0.76% | 0.00% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | A | Option to Purchase Common Stock | 15000 | $0.00 | 15,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | A | Common Stock | 2500 | $0.00 | 8,784,166.0000 | 0 | 0.03% | 0.00% |
| Dec. 5, 2022 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | A | Option to Purchase Common Stock | 15000 | $0.00 | 15,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 9, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 17 | $63.59 | 8,783,649.0000 | 137,423,000 | 0.00% | 0.00% |
| Feb. 9, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 29551 | $62.99 | 8,783,666.0000 | 137,423,000 | 0.34% | 0.02% |
| Feb. 8, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 26526 | $63.66 | 8,813,217.0000 | 137,423,000 | 0.30% | 0.02% |
| Feb. 8, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 11040 | $63.42 | 8,839,743.0000 | 137,423,000 | 0.12% | 0.01% |
| Feb. 7, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 22505 | $63.74 | 8,850,783.0000 | 137,423,000 | 0.25% | 0.02% |
| Feb. 7, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 32325 | $63.25 | 8,873,288.0000 | 137,423,000 | 0.36% | 0.02% |
| Feb. 6, 2023 | SEI INVESTMENTS CO | $SEIC | WEST ALFRED P JR | Executive Chairman | S | Common Stock | 35936 | $63.39 | 8,905,613.0000 | 137,423,000 | 0.40% | 0.03% |