16 insiders reported 127 Form 4 transactions for SEI INVESTMENTS CO (SEIC) over the past 18 months (most recent 2026-09-24). Recent activity: LANE MICHAEL (Executive Vice President) Sell 2,400 shares, Hicke Ryan (Chief Executive Officer) Buy 17,500 shares, Hicke Ryan (Chief Executive Officer) Buy 20,000 shares, Hicke Ryan (Chief Executive Officer) Sell 37,500 shares, ROMEO CARMEN (Director) Buy 5,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-24 | LANE MICHAEL | Executive Vice President | Sell | 2,400 | $246,672 |
| 2026-09-08 | Hicke Ryan | Chief Executive Officer | Buy | 17,500 | $848,225 |
| 2026-09-08 | Hicke Ryan | Chief Executive Officer | Buy | 20,000 | $1.3M |
| 2026-09-08 | Hicke Ryan | Chief Executive Officer | Sell | 37,500 | $4.2M |
| 2026-09-03 | ROMEO CARMEN | Director | Buy | 5,000 | $248,150 |
| 2026-09-03 | ROMEO CARMEN | Director | Sell | 5,000 | $548,500 |
| 2026-09-01 | Peterson Michael | Executive Vice President | Buy | 37,500 | $2.1M |
| 2026-09-01 | Peterson Michael | Executive Vice President | Sell | 37,500 | $4.2M |
| 2026-08-06 | McCabe Philip | Title: Executive Vice President, Head of SEI's Investment Managers business | Sell | 5,043 | $532,036 |
| 2026-08-06 | McCabe Philip | Title: Executive Vice President, Head of SEI's Investment Managers business | Buy | 15,000 | $744,450 |
| 2026-08-06 | McCabe Philip | Title: Executive Vice President, Head of SEI's Investment Managers business | Sell | 24,957 | $2.6M |
| 2026-08-06 | McCabe Philip | Title: Executive Vice President, Head of SEI's Investment Managers business | Buy | 9,957 | $494,166 |
| 2026-08-06 | McCabe Philip | Title: Executive Vice President, Head of SEI's Investment Managers business | Buy | 5,043 | $250,284 |
| 2026-08-04 | MCCARTHY KATHRYN | Director | Buy | 5,000 | $355,600 |
| 2026-08-04 | MCCARTHY KATHRYN | Director | Buy | 5,000 | $355,600 |
| 2026-08-04 | MCCARTHY KATHRYN | Director | Sell | 10,000 | $1.0M |
| 2026-07-30 | Warner Mark Andrew | See Remarks* | Buy | 5,000 | $282,700 |
| 2026-07-30 | GUARINO CARL | Director | Buy | 5,000 | $248,150 |
| 2026-07-30 | Peterson Michael | Executive Vice President | Buy | 25,000 | $1.4M |
| 2026-07-30 | Warner Mark Andrew | See Remarks* | Buy | 2,500 | $161,075 |
| 2026-07-30 | GUARINO CARL | Director | Buy | 5,000 | $248,150 |
| 2026-07-30 | Peterson Michael | Executive Vice President | Sell | 25,000 | $2.6M |
| 2026-07-30 | Warner Mark Andrew | See Remarks* | Buy | 2,500 | $161,075 |
| 2026-07-30 | GUARINO CARL | Director | Sell | 10,000 | $1.0M |
| 2026-07-30 | Warner Mark Andrew | See Remarks* | Buy | 5,000 | $282,700 |
Source: SEC Form 4 filings · as of 2026-09-24