CIK 0000350894 · Large accelerated filer
SEI INVESTMENTS CO
Sign in to watch- Ticker
- SEIC
- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- FY end
- Dec 31
- Incorporated
- PA
- Entity type
- operating
- EIN
- 231707341
- Phone
- 6106761000
- Business address
- 1 FREEDOM VALLEY DRIVE, OAKS, PA, 19456-1100
- Former names
- SEI CORP
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $13,512,522
- in 6 filings
Net −$13,512,522. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2025-12-03 | WEST ALFRED P JR Executive Chairman | Option exercise | +30,000 | $53.34 | $1.6M | 6,967,582 |
| 2025-12-03 | WEST ALFRED P JR Executive Chairman | Sale | −24,770 | $80.87 | $2.0M | 6,942,812 |
| 2025-12-03 | WEST ALFRED P JR Executive Chairman | Option exercise · STOCK OPTION (RIGHT TO PURCHASE) | −30,000 | 0 | ||
| 2025-11-17 | DORAN WILLIAM Director | Option exercise | +10,000 | $53.34 | $533K | 628,536 |
| 2025-11-17 | DORAN WILLIAM Director | Option exercise · Common Stock (right to purchase) | −5,000 | 0 | ||
| 2025-11-17 | DORAN WILLIAM Director | Option exercise · Common Stock (right to purchase) | −5,000 | 0 | ||
| 2025-11-12 | Peterson Michael EXECUTIVE VICE PRESIDENT | Option exercise | +25,000 | $54.34 | $1.4M | 38,500 |
| 2025-11-12 | Peterson Michael EXECUTIVE VICE PRESIDENT | Sale | −25,000 | $84.21 | $2.1M | 13,500 |
| 2025-11-12 | Peterson Michael EXECUTIVE VICE PRESIDENT | Option exercise · Option to Purchase Common Stock | −25,000 | 0 | ||
| 2025-11-11 | ROMEO CARMEN Director | Option exercise | +5,000 | $53.34 | $267K | 1,578,527 |
| 2025-11-11 | ROMEO CARMEN Director | Sale | −5,000 | $84.01 | $420K | 1,573,527 |
| 2025-11-11 | ROMEO CARMEN Director | Option exercise · Option to Purchase Common Stock | −5,000 | 0 | ||
| 2025-10-24 | McCabe Philip See Remarks | Option exercise | +12,000 | $53.34 | $640K | 62,544.45 |
| 2025-10-24 | McCabe Philip See Remarks | Option exercise · Option to Purchase Common Stock | +12,000 | 0 | ||
| 2025-09-29 | MCCARTHY KATHRYN Director | Option exercise | +10,000 | $53.34 | $533K | 85,641 |
| 2025-09-29 | MCCARTHY KATHRYN Director | Sale | −10,000 | $85.66 | $857K | 75,641 |
| 2025-09-29 | MCCARTHY KATHRYN Director | Option exercise · Option to Purchase Common Stock | −5,000 | 0 | ||
| 2025-09-29 | MCCARTHY KATHRYN Director | Option exercise · Option to Purchase Common Stock | −5,000 | 0 | ||
| 2025-09-23 | GUARINO CARL Director | Option exercise | +10,000 | $53.34 | $533K | 26,042 |
| 2025-09-23 | GUARINO CARL Director | Sale | −10,000 | $86.41 | $864K | 16,042 |
Page 8 of 14 · 275 trades