15 insiders reported 99 Form 4 transactions for SEI INVESTMENTS CO (SEIC) over the past 18 months (most recent 2026-06-11). Recent activity: DORAN WILLIAM (Director) Sell 5,000 shares, Warner Mark Andrew (In Remarks) Buy 4,000 shares, Warner Mark Andrew (In Remarks) Sell 4,000 shares, McCabe Philip (See Remarks) Sell 15,000 shares, Peterson Michael (EXECUTIVE VICE PRESIDENT) Buy 10,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-11 | DORAN WILLIAM | Director | Sell | 5,000 | $452,500 |
| 2026-04-30 | Warner Mark Andrew | In Remarks | Buy | 4,000 | $193,880 |
| 2026-04-30 | Warner Mark Andrew | In Remarks | Sell | 4,000 | $364,640 |
| 2026-04-24 | McCabe Philip | See Remarks | Sell | 15,000 | $1.4M |
| 2026-04-23 | Peterson Michael | EXECUTIVE VICE PRESIDENT | Buy | 10,000 | $484,700 |
| 2026-04-23 | Sharma Sanjay | See Remarks* | Buy | 12,500 | $620,375 |
| 2026-04-23 | Peterson Michael | EXECUTIVE VICE PRESIDENT | Sell | 10,000 | $900,000 |
| 2026-04-23 | Sharma Sanjay | See Remarks* | Buy | 12,500 | $620,375 |
| 2026-04-23 | Sharma Sanjay | See Remarks* | Sell | 23,441 | $2.1M |
| 2026-04-23 | Sharma Sanjay | See Remarks* | Sell | 1,559 | $141,448 |
| 2026-03-19 | Denham Sean | Executive VP, CFO, COO | Sell | 7,673 | $604,402 |
| 2026-03-12 | WEST ALFRED P JR | Insider | Sell | 25,391 | $2.0M |
| 2026-03-12 | WEST ALFRED P JR | Insider | Sell | 178 | $14,041 |
| 2026-03-12 | WEST ALFRED P JR | Insider | Sell | 6,076 | $480,672 |
| 2026-03-12 | WEST ALFRED P JR | Insider | Sell | 1,371 | $109,598 |
| 2026-03-12 | WEST ALFRED P JR | Insider | Sell | 29,431 | $2.4M |
| 2026-02-26 | Warner Mark Andrew | Insider | Buy | 2,000 | $142,240 |
| 2026-02-26 | Warner Mark Andrew | Insider | Buy | 2,000 | $142,240 |
| 2026-02-26 | Warner Mark Andrew | Insider | Sell | 4,000 | $326,960 |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Sell | 17,009 | $1.5M |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Buy | 12,500 | $889,000 |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Buy | 12,500 | $889,000 |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Buy | 17,500 | $848,225 |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Buy | 20,000 | $1.3M |
| 2026-02-02 | Hicke Ryan | CHIEF EXECUTIVE OFFICER | Buy | 17,500 | $989,450 |
Source: SEC Form 4 filings · as of 2026-06-11