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Sei Investments Co (NASDAQ:SEIC)
US · Delayed Price · Currency is USD
Financial Services · Asset Management
103.34+1.04 (+1.02%)
Insider Score
––Not scored
SEIC Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
SEIC Stock Insider Trading Activity
SEIC stock’s insider trading shows 14 sales on the open market for an estimated $21.94M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| WEST ALFRED P JR Other | Sell | 5,483 | $103.16 | $565.64K | 0.1% | 6,784,574 | Sep 30, 2026 | — | Form 4 |
| WEST ALFRED P JR Other | Sell | 28,394 | $103.40 | $2.94M | 0.4% | 6,790,057 | Sep 29, 2026 | — | Form 4 |
| LANE MICHAEL Other | Sell | 2,400 | $102.78 | $246.67K | 5.7% | 39,581 | Sep 22, 2026 | — | Form 4 |
| Hicke Ryan CEO | Option exercise | 17,500 | $48.47 | $848.23K | 9.1% | 210,315 | Sep 3, 2026 | — | Form 4 |
| Hicke Ryan CEO | Sell | 37,500 | $110.71 | $4.15M | 16.3% | 192,815 | Sep 3, 2026 | — | Form 4 |
| Hicke Ryan CEO | Option exercise | 20,000 | $64.43 | $1.29M | 9.5% | 230,315 | Sep 3, 2026 | — | Form 4 |
| ROMEO CARMEN Director | Option exercise | 5,000 | $49.63 | $248.15K | 0.3% | 1,565,293 | Sep 1, 2026 | — | Form 4 |
| ROMEO CARMEN Director | Sell | 5,000 | $109.70 | $548.50K | 0.3% | 1,560,293 | Sep 1, 2026 | — | Form 4 |
| Peterson Michael Other | Option exercise | 37,500 | $56.54 | $2.12M | 186% | 57,648 | Aug 28, 2026 | — | Form 4 |
| Peterson Michael Other | Sell | 37,500 | $111.51 | $4.18M | 65.0% | 20,148 | Aug 28, 2026 | — | Form 4 |
| McCabe Philip Other | Sell | 5,043 | $105.50 | $532.04K | 8.4% | 54,884 | Aug 5, 2026 | — | Form 4 |
| McCabe Philip Other | Option exercise | 5,043 | $49.63 | $250.28K | 9.2% | 59,927 | Aug 5, 2026 | — | Form 4 |
| McCabe Philip Other | Option exercise | 9,957 | $49.63 | $494.17K | 18.1% | 64,841 | Aug 4, 2026 | — | Form 4 |
| McCabe Philip Other | Sell | 24,957 | $105.04 | $2.62M | 31.3% | 54,884 | Aug 4, 2026 | — | Form 4 |
| McCabe Philip Other | Option exercise | 15,000 | $49.63 | $744.45K | 23.1% | 79,841 | Aug 4, 2026 | — | Form 4 |
| MCCARTHY KATHRYN Director | Sell | 10,000 | $103.53 | $1.04M | 11.4% | 77,883 | Aug 3, 2026 | — | Form 4 |
| MCCARTHY KATHRYN Director | Option exercise | 5,000 | $71.12 | $355.60K | 6.4% | 82,883 | Aug 3, 2026 | — | Form 4 |
| MCCARTHY KATHRYN Director | Option exercise | 5,000 | $71.12 | $355.60K | 6.0% | 87,883 | Aug 3, 2026 | — | Form 4 |
| Warner Mark Andrew Other | Option exercise | 5,000 | $56.54 | $282.70K | 45.8% | 15,921 | Jul 28, 2026 | — | Form 4 |
| Warner Mark Andrew Other | Sell | 2,300 | $101.11 | $232.54K | 14.4% | 13,621 | Jul 28, 2026 | — | Form 4 |
| GUARINO CARL Director | Sell | 10,000 | $103.19 | $1.03M | 35.3% | 18,308 | Jul 28, 2026 | — | Form 4 |
| GUARINO CARL Director | Option exercise | 5,000 | $49.63 | $248.15K | 21.5% | 28,308 | Jul 28, 2026 | — | Form 4 |
| GUARINO CARL Director | Option exercise | 5,000 | $49.63 | $248.15K | 27.3% | 23,308 | Jul 28, 2026 | — | Form 4 |
| Peterson Michael Other | Sell | 25,000 | $102.05 | $2.55M | 55.4% | 20,148 | Jul 28, 2026 | — | Form 4 |
| Peterson Michael Other | Option exercise | 25,000 | $55.73 | $1.39M | 124% | 45,148 | Jul 28, 2026 | — | Form 4 |
| Warner Mark Andrew Other | Sell | 7,400 | $102.97 | $761.99K | 88.9% | 921 | Jul 28, 2026 | — | Form 4 |
| Warner Mark Andrew Other | Sell | 5,300 | $102.01 | $540.66K | 38.9% | 8,321 | Jul 28, 2026 | — | Form 4 |
| Warner Mark Andrew Other | Option exercise | 2,500 | $64.43 | $161.07K | 271% | 3,421 | Jul 28, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.