SEIC SEI INVESTMENTS CO
Nasdaq · SEC CIK 350894 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $50.95M 26 sales by 11 insiders
- Filings on record
- 205 since 2021-08-05, latest 2026-09-24 16:15
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| WEST ALFRED P JR | Executive COB, Dir | — | $12.01M |
| Hicke Ryan | CEO, Dir | — | $11.14M |
| Peterson Michael | EVP | — | $9.74M |
| McCabe Philip | See Remarks | — | $5.50M |
| Sharma Sanjay | See Remarks* | — | $4.24M |
| MCCARTHY KATHRYN | Dir | — | $2.80M |
| Warner Mark Andrew | See Remarks* | — | $2.23M |
| DORAN WILLIAM | Dir | — | $1.04M |
| GUARINO CARL | Dir | — | $1.03M |
| ROMEO CARMEN | Dir | — | $968.5K |
Transactions 260
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-01-02 | 2024-12-31 | SEIC | ROMEO CARMEN | Dir | G - Gift | $0.00 | -6,300 | 1.57M | -0.4% | $0 | |
| M | 2024-12-17 | 2024-12-13+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $85.55 | -146.2K | 7.23M | -2% | -$12.51M |
| D | 2024-12-16 | 2024-12-12 | SEIC | Peterson Michael | EVP | A - Grant | — | +7,000 | 13.5K | +108% | — |
| 2024-12-16 | 2024-12-12 | SEIC | WEST ALFRED P JR | Executive COB, Dir | A - Grant | — | +7,600 | 7.38M | +0.1% | — | |
| 2024-12-16 | 2024-12-12 | SEIC | GUARINO CARL | Dir | A - Grant | — | +2,175 | 16.0K | +16% | — | |
| D | 2024-12-16 | 2024-12-12 | SEIC | Hicke Ryan | CEO | A - Grant | — | +25.0K | 172.6K | +17% | — |
| 2024-12-16 | 2024-12-12 | SEIC | MCCARTHY KATHRYN | Dir | A - Grant | — | +2,175 | 75.6K | +3% | — | |
| D | 2024-12-16 | 2024-12-12 | SEIC | McCabe Philip | See Remarks | A - Grant | — | +7,000 | 50.5K | +16% | — |
| 2024-12-16 | 2024-12-12 | SEIC | ROMEO CARMEN | Dir | A - Grant | — | +2,175 | 1.58M | +0.1% | — | |
| 2024-12-16 | 2024-12-12 | SEIC | Brassington Jonathan | Dir | A - Grant | — | +2,175 | 3,941 | +123% | — | |
| D | 2024-12-16 | 2024-12-12 | SEIC | LANE MICHAEL | EVP | A - Grant | — | +7,000 | 37.0K | +23% | — |
| D | 2024-12-16 | 2024-12-12 | SEIC | Sharma Sanjay | See Remarks* | A - Grant | — | +7,000 | 23.9K | +41% | — |
| 2024-12-16 | 2024-12-12 | SEIC | DORAN WILLIAM | Dir | A - Grant | — | +2,175 | 663.6K | +0.3% | — | |
| D | 2024-12-16 | 2024-12-12 | SEIC | Denham Sean | EVP, CFO | A - Grant | — | +15.0K | 60.0K | +33% | — |
| 2024-12-16 | 2024-12-12 | SEIC | MILLER STEPHANIE D. | Dir | A - Grant | — | +2,175 | 3,941 | +123% | — | |
| D | 2024-12-06 | 2024-12-04 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | M - OptEx | $40.64 | +35.0K | 7.40M | +0.5% | +$1.42M |
| DM | 2024-12-06 | 2024-12-04+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale+OE | $82.91 | -25.0K | 7.38M | -0.3% | -$2.07M |
| 2024-11-27 | 2024-11-26 | SEIC | DORAN WILLIAM | Dir | S - Sale | $81.80 | -5,000 | 661.4K | -0.8% | -$409.0K | |
| DM | 2024-11-21 | 2024-11-20 | SEIC | DORAN WILLIAM | Dir | M - OptEx | $40.64 | +10.0K | 666.4K | +2% | +$406.4K |
| M | 2024-11-12 | 2024-11-07+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $80.28 | -137.1K | 7.37M | -2% | -$11.01M |
| D | 2024-11-08 | 2024-11-06 | SEIC | Peterson Michael | EVP | M - OptEx | $64.43 | +10.0K | 16.5K | +154% | +$644.3K |
| D | 2024-11-08 | 2024-11-06 | SEIC | Peterson Michael | EVP | S - Sale+OE | $79.14 | -10.0K | 6,500 | -61% | -$791.4K |
| D | 2024-11-08 | 2024-11-06 | SEIC | ROMEO CARMEN | Dir | M - OptEx | $40.64 | +5,000 | 1.58M | +0.3% | +$203.2K |
| D | 2024-11-08 | 2024-11-06 | SEIC | ROMEO CARMEN | Dir | S - Sale+OE | $79.64 | -5,000 | 1.58M | -0.3% | -$398.2K |
| D | 2024-10-29 | 2024-10-25 | SEIC | Peterson Michael | EVP, GC | M - OptEx | $55.73 | +25.0K | 31.5K | +385% | +$1.39M |
| DM | 2024-10-29 | 2024-10-25 | SEIC | Peterson Michael | EVP, GC | S - Sale+OE | $74.59 | -25.0K | 6,500 | -79% | -$1.86M |
| D | 2024-10-29 | 2024-10-28 | SEIC | McCabe Philip | EVP - Head of Investment Mgmt | M - OptEx | $40.64 | +10.5K | 54.0K | +24% | +$426.7K |
| D | 2024-10-29 | 2024-10-28 | SEIC | McCabe Philip | EVP - Head of Investment Mgmt | S - Sale+OE | $75.91 | -10.5K | 43.5K | -19% | -$797.1K |
| D | 2024-10-29 | 2024-10-28 | SEIC | GUARINO CARL | Dir | S - Sale+OE | $75.77 | -7,564 | 13.9K | -35% | -$573.1K |
| D | 2024-10-29 | 2024-10-28 | SEIC | GUARINO CARL | Dir | M - OptEx | $40.64 | +10.0K | 21.4K | +87% | +$406.4K |
| D | 2024-10-29 | 2024-10-25 | SEIC | Hicke Ryan | CEO, Dir | M - OptEx | $40.64 | +10.0K | 157.6K | +7% | +$406.4K |
| D | 2024-10-29 | 2024-10-25 | SEIC | Hicke Ryan | CEO, Dir | S - Sale+OE | $74.90 | -10.0K | 147.6K | -6% | -$749.0K |
| D | 2024-09-30 | 2024-09-30 | SEIC | McCabe Philip | EVP - Head of Investment Mgmt | M - OptEx | $40.64 | +10.5K | 43.5K | +32% | +$426.7K |
| D | 2024-09-17 | 2024-09-16 | SEIC | LANE MICHAEL | EVP | A - Grant | — | +30.0K | 30.0K | New | — |
| 2024-08-30 | 2024-08-29 | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $67.50 | -5,670 | 7.50M | -0.1% | -$382.7K | |
| M | 2024-08-28 | 2024-08-27+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $67.18 | -101.1K | 7.50M | -1% | -$6.79M |
| M | 2024-08-27 | 2024-08-23+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $67.52 | -71.6K | 7.65M | -0.9% | -$4.83M |
| D | 2024-08-23 | 2024-08-22 | SEIC | Hicke Ryan | CEO | M - OptEx | $40.64 | +10.0K | 147.6K | +7% | +$406.4K |
| 2024-06-25 | 2024-06-24 | SEIC | DORAN WILLIAM | Dir | S - Sale | $67.04 | -5,000 | 656.4K | -0.8% | -$335.2K | |
| M | 2024-05-14 | 2024-05-13+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $68.09 | -48.5K | 7.68M | -0.6% | -$3.30M |
| M | 2024-05-13 | 2024-05-09+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $68.61 | -140.0K | 7.73M | -2% | -$9.61M |
| 2024-04-01 | 2024-03-28 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $72.14 | -19.4K | 7.87M | -0.2% | -$1.40M | |
| 2024-03-28 | 2024-03-26 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $70.75 | -150.0K | 7.88M | -2% | -$10.61M | |
| DA | 2024-03-28 | 2024-03-18 | SEIC | Denham Sean | EVP | A - Grant | — | +45.0K | 45.0K | New | — |
| D | 2024-03-28 | 2024-03-08 | SEIC | KLAUDER PAUL | EVP | M - OptEx | $40.64 | +2,000 | 22.8K | +10% | +$81.3K |
| D | 2024-03-28 | 2024-03-08 | SEIC | KLAUDER PAUL | EVP | S - Sale+OE | $69.80 | -2,000 | 20.8K | -9% | -$139.6K |
| D | 2024-03-18 | 2024-03-18 | SEIC | Denham Sean | EVP | A - Grant | — | +45.0K | 45.0K | New | — |
| D | 2024-02-26 | 2024-02-23 | SEIC | Warner Mark Andrew | See Remarks | M - OptEx | $40.64 | +3,000 | 4,300 | +231% | +$121.9K |
| D | 2024-02-26 | 2024-02-23 | SEIC | Warner Mark Andrew | See Remarks | S - Sale+OE | $67.31 | -3,000 | 1,300 | -70% | -$201.9K |
| D | 2024-02-14 | 2024-02-12 | SEIC | Sharma Sanjay | See Remarks* | S - Sale+OE | $67.20 | -15.0K | 16.9K | -47% | -$1.01M |
| D | 2024-02-14 | 2024-02-12 | SEIC | Sharma Sanjay | See Remarks* | M - OptEx | $40.64 | +15.0K | 31.9K | +89% | +$609.6K |
| DM | 2024-02-09 | 2024-02-07 | SEIC | WITHROW WAYNE | EVP | S - Sale+OE | $66.16 | -17.0K | 55.4K | -23% | -$1.12M |
| DM | 2024-02-09 | 2024-02-07 | SEIC | WITHROW WAYNE | EVP | M - OptEx | $51.87 | +17.0K | 57.4K | +42% | +$880.2K |
| DM | 2024-02-07 | 2024-02-05+ | SEIC | WITHROW WAYNE | EVP | S - Sale+OE | $65.89 | -18.0K | 55.4K | -25% | -$1.19M |
| DM | 2024-02-07 | 2024-02-05+ | SEIC | WITHROW WAYNE | EVP | M - OptEx | $40.64 | +18.0K | 56.1K | +47% | +$732.7K |
| 2024-01-02 | 2023-12-29 | SEIC | ROMEO CARMEN | Dir | G - Gift | $0.00 | -12.7K | 1.58M | -0.8% | $0 | |
| M | 2023-12-27 | 2023-12-26+ | SEIC | DORAN WILLIAM | Dir | G - Gift | $0.00 | -12.2K | 666.1K | -2% | $0 |
| D | 2023-12-19 | 2023-12-15 | SEIC | Peterson Michael | EVP, GC | A - Grant | — | +4,000 | 6,500 | +160% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | MCCARTHY KATHRYN | Dir | A - Grant | — | +1,000 | 73.5K | +1% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | MILLER STEPHANIE D. | Dir | A - Grant | — | +1,000 | 1,766 | +131% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | Hicke Ryan | CEO, Dir | A - Grant | — | +30.0K | 137.6K | +28% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | GUARINO CARL | Dir | A - Grant | — | +1,000 | 11.4K | +10% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | McCabe Philip | EVP - Head of Investment Mgr | A - Grant | — | +4,000 | 33.0K | +14% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | Brassington Jonathan | Dir | A - Grant | — | +1,000 | 1,766 | +131% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | A - Grant | — | +4,000 | 8.03M | +0.0% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | DORAN WILLIAM | Dir | A - Grant | — | +1,000 | 673.6K | +0.1% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | ROMEO CARMEN | Dir | A - Grant | — | +1,000 | 1.59M | +0.1% | — |
| D | 2023-12-19 | 2023-12-15 | SEIC | Sharma Sanjay | EVP (*Remarks) | A - Grant | — | +4,000 | 16.9K | +31% | — |
| D | 2023-12-07 | 2023-12-05 | SEIC | DORAN WILLIAM | Dir | M - OptEx | $33.76 | +10.0K | 672.6K | +2% | +$337.6K |
| D | 2023-12-04 | 2023-12-01 | SEIC | ROMEO CARMEN | Dir | S - Sale+OE | $59.00 | -5,000 | 1.59M | -0.3% | -$295.0K |
| D | 2023-12-04 | 2023-12-01 | SEIC | ROMEO CARMEN | Dir | M - OptEx | $33.76 | +5,000 | 1.59M | +0.3% | +$168.8K |
| DM | 2023-12-04 | 2023-12-01+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale+OE | $59.81 | -34.0K | 8.03M | -0.4% | -$2.04M |
| DM | 2023-12-04 | 2023-12-01+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | M - OptEx | $33.76 | +45.0K | 8.04M | +0.6% | +$1.52M |
| 2023-11-22 | 2023-11-22 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $57.91 | -18.6K | 8.02M | -0.2% | -$1.07M | |
| M | 2023-11-21 | 2023-11-17+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $57.99 | -188.6K | 8.18M | -2% | -$10.94M |
| D | 2023-11-21 | 2023-11-21 | SEIC | WITHROW WAYNE | EVP | M - OptEx | $33.76 | +8,924 | 64.3K | +16% | +$301.3K |
| D | 2023-11-21 | 2023-11-21 | SEIC | WITHROW WAYNE | EVP | S - Sale+OE | $58.00 | -8,924 | 55.4K | -14% | -$517.6K |
| D | 2023-11-03 | 2023-11-02 | SEIC | Hicke Ryan | CEO | M - OptEx | $33.76 | +5,000 | 107.6K | +5% | +$168.8K |
| D | 2023-10-30 | 2023-10-27 | SEIC | McCabe Philip | EVP - Head of Investment Mgr | M - OptEx | $33.76 | +12.5K | 29.0K | +76% | +$422.0K |
| D | 2023-10-26 | 2023-10-24 | SEIC | MILLER STEPHANIE D. | Dir | A - Grant | — | +766 | 766 | New | — |
| DM | 2023-09-21 | 2023-09-19+ | SEIC | WITHROW WAYNE | EVP | S - Sale+OE | $62.01 | -11.1K | 55.4K | -17% | -$686.8K |
| DM | 2023-09-21 | 2023-09-19+ | SEIC | WITHROW WAYNE | EVP | M - OptEx | $33.76 | +11.1K | 56.5K | +24% | +$373.9K |
| D | 2023-09-21 | 2023-09-19 | SEIC | Peterson Michael | EVP, GC | S - Sale+OE | $61.29 | -25.0K | 2,500 | -91% | -$1.53M |
| D | 2023-09-21 | 2023-09-19 | SEIC | Peterson Michael | EVP, GC | M - OptEx | $54.34 | +25.0K | 27.5K | +1,000% | +$1.36M |
| M | 2023-09-13 | 2023-09-11+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $60.45 | -132.4K | 8.27M | -2% | -$8.01M |
| D | 2023-09-11 | 2023-09-08 | SEIC | MCCARTHY KATHRYN | Dir | S - Sale+OE | $60.58 | -10.0K | 72.5K | -12% | -$605.8K |
| D | 2023-09-11 | 2023-09-08 | SEIC | MCCARTHY KATHRYN | Dir | M - OptEx | $40.64 | +10.0K | 82.5K | +14% | +$406.4K |
| D | 2023-09-01 | 2023-08-30 | SEIC | MCGONIGLE DENNIS | EVP, CFO | S - Sale+OE | $62.22 | -30.0K | 594.2K | -5% | -$1.87M |
| DM | 2023-09-01 | 2023-08-30 | SEIC | MCGONIGLE DENNIS | EVP, CFO | M - OptEx | $33.76 | +30.0K | 609.2K | +5% | +$1.01M |
| D | 2023-07-31 | 2023-07-28 | SEIC | Peterson Michael | EVP, GC | S - Sale+OE | $63.20 | -10.0K | 2,500 | -80% | -$632.0K |
| D | 2023-07-31 | 2023-07-28 | SEIC | Peterson Michael | EVP, GC | M - OptEx | $48.47 | +10.0K | 12.5K | +400% | +$484.7K |
| D | 2023-07-31 | 2023-07-27 | SEIC | WITHROW WAYNE | EVP | M - OptEx | $33.76 | +10.0K | 65.4K | +18% | +$337.6K |
| D | 2023-07-31 | 2023-07-27 | SEIC | WITHROW WAYNE | EVP | S - Sale+OE | $62.74 | -10.0K | 55.4K | -15% | -$627.4K |
| D | 2023-06-30 | 2023-06-28 | SEIC | Hicke Ryan | CEO, Dir | S - Sale+OE | $58.68 | -23.23 | 82.6K | -0.0% | -$1,363 |
| DM | 2023-06-30 | 2023-06-28 | SEIC | Hicke Ryan | CEO, Dir | M - OptEx | $33.76 | +20.0K | 102.6K | +24% | +$675.2K |
| 2023-06-26 | 2023-06-23 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $56.96 | -60.3K | 8.36M | -0.7% | -$3.43M | |
| M | 2023-06-22 | 2023-06-20+ | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | S - Sale | $58.50 | -146.6K | 8.52M | -2% | -$8.58M |
| 2023-04-11 | 2023-04-04 | SEIC | WEST ALFRED P JR | Executive COB, Dir, 10% | G - Gift | $0.00 | -1,761 | 8.57M | -0.0% | $0 | |
| DMA | 2023-04-05 | 2023-02-02 | SEIC | Sharma Sanjay | See Remarks* | M - OptEx | $33.76 | +9,000 | 17.4K | +107% | +$303.8K |
| DA | 2023-04-05 | 2023-02-02 | SEIC | Sharma Sanjay | See Remarks* | S - Sale+OE | $64.14 | -9,000 | 12.9K | -41% | -$577.3K |
Purchase Sale Sale after option exercise All abbreviations