Form4.ai tracks every SEC insider trade in real time. See every SEIC insider filing with a free account — no card.
See every SEIC insider filing — free account, no card.
Free accountSEI INVESTMENTS CO (SEIC) has 5 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 2 sales totalling $3.7M. Most recent filing: Oct. 1, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Oct 1, 2026 SEC filing | WEST ALFRED P JR Insider | Sold | $3,501,662 | — |
| Sep 24, 2026 SEC filing | LANE MICHAEL Executive Vice President | Sold | $246,672 | — |
| Sep 8, 2026 SEC filing | Hicke Ryan Chief Executive Officer | Cashless exercise | $2,334,038 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.