SEIC SEC Form 4 filings
Sei Investments Co Latest Insider Trading Activity
Over the past 442 days, Sei Investments Co (SEIC) has had 14 total open-market insider transactions represented in the displayed records. The latest displayed record by transaction date reports 2 sales by West Alfred P Jr (Sei Investments Co Other, Chairman Emeritus) totaling 33,877 shares at a weighted-average price of $103.36 per share, with the latest transaction dated September 30, 2026. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. SEIC | 2026-10-01 | 2026-09-30 | Sei Investments Co | West Alfred P Jr | Other, Chairman Emeritus | Sell | 2 | 33,877 | $103.36 | $3,501,662.03 | 0.50% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. SEIC | 2026-09-24 | 2026-09-22 | Sei Investments Co | Lane Michael | Executive Vice President | Sell | 1 | 2,400 | $102.78 | $246,672.00 | 5.72% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. SEIC | 2026-09-08 | 2026-09-03 | Sei Investments Co | Hicke Ryan | Chief Executive Officer | Sell | 1 | 37,500 | $110.71 | $4,151,662.50 | 16.28% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. SEIC | 2026-06-29 | 2026-06-29 | Sei Investments Co | West Alfred P Jr | Other | Sell | 4 | 57,332 | $87.26 | $5,002,998.04 | 0.21% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. SEIC | 2026-06-11 | 2026-06-09 | Sei Investments Co | Doran William | Director | Sell | 1 | 5,000 | $90.50 | $452,500.00 | 0.80% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. SEIC | 2025-12-08 | 2025-12-04 | Sei Investments Co | Mccabe Philip | Officer | Sell | 1 | 12,000 | $81.11 | $973,320.00 | 16.10% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. SEIC | 2025-11-13 | 2025-11-12 | Sei Investments Co | Peterson Michael | EXECUTIVE VICE PRESIDENT | Sell | 1 | 25,000 | $84.21 | $2,105,250.00 | 64.94% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. SEIC | 2025-09-29 | 2025-09-29 | Sei Investments Co | Mccarthy Kathryn | Director | Sell | 1 | 10,000 | $85.66 | $856,600.00 | 11.68% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. SEIC | 2025-09-24 | 2025-09-23 | Sei Investments Co | Guarino Carl | Director | Sell | 1 | 10,000 | $86.41 | $864,100.00 | 38.40% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. SEIC | 2025-08-08 | 2025-08-07 | Sei Investments Co | Peterson Michael | EXECUTIVE VICE PRESIDENT | Sell | 1 | 7,089 | $88.55 | $627,730.95 | 34.43% | View Filing |
⚠️ THE SAMPLE ABOVE IS DEFERRED BY 6 HOURS ⚠️
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