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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-24 16:15 | 2026-09-22 | SEIC | LANE MICHAEL | EVP | S - Sale | $102.78 | -2,400 | 39.6K | -6% | -$246.7K | |
| DM | 2026-09-08 16:05 | 2026-09-03 | SEIC | Hicke Ryan | CEO | M - OptEx | $56.98 | +37.5K | 230.3K | +19% | +$2.14M |
| D | 2026-09-08 16:05 | 2026-09-03 | SEIC | Hicke Ryan | CEO | S - Sale+OE | $110.71 | -37.5K | 192.8K | -16% | -$4.15M |
| D | 2026-09-03 16:09 | 2026-09-01 | SEIC | ROMEO CARMEN | Dir | M - OptEx | $49.63 | +5,000 | 1.57M | +0.3% | +$248.2K |
| D | 2026-09-03 16:09 | 2026-09-01 | SEIC | ROMEO CARMEN | Dir | S - Sale+OE | $109.70 | -5,000 | 1.56M | -0.3% | -$548.5K |
| D | 2026-09-01 16:05 | 2026-08-28 | SEIC | Peterson Michael | EVP | M - OptEx | $56.54 | +37.5K | 57.6K | +186% | +$2.12M |
| D | 2026-09-01 16:05 | 2026-08-28 | SEIC | Peterson Michael | EVP | S - Sale+OE | $111.51 | -37.5K | 20.1K | -65% | -$4.18M |
| DM | 2026-08-06 16:23 | 2026-08-04+ | SEIC | McCabe Philip | See Remarks | M - OptEx | $49.63 | +30.0K | 59.9K | +100% | +$1.49M |
| DM | 2026-08-06 16:23 | 2026-08-04+ | SEIC | McCabe Philip | See Remarks | S - Sale+OE | $105.12 | -30.0K | 54.9K | -35% | -$3.15M |
| DM | 2026-08-04 16:24 | 2026-08-03 | SEIC | MCCARTHY KATHRYN | Dir | M - OptEx | $71.12 | +10.0K | 87.9K | +13% | +$711.2K |
| D | 2026-08-04 16:24 | 2026-08-03 | SEIC | MCCARTHY KATHRYN | Dir | S - Sale+OE | $103.53 | -10.0K | 77.9K | -11% | -$1.04M |
| DM | 2026-07-30 16:06 | 2026-07-28 | SEIC | Warner Mark Andrew | See Remarks* | M - OptEx | $59.17 | +15.0K | 15.9K | +1,629% | +$887.5K |
| DM | 2026-07-30 16:06 | 2026-07-28 | SEIC | Warner Mark Andrew | See Remarks* | S - Sale+OE | $102.35 | -15.0K | 921 | -94% | -$1.54M |
| D | 2026-07-30 16:06 | 2026-07-28 | SEIC | Peterson Michael | EVP | M - OptEx | $55.73 | +25.0K | 45.1K | +124% | +$1.39M |
| D | 2026-07-30 16:06 | 2026-07-28 | SEIC | Peterson Michael | EVP | S - Sale+OE | $102.05 | -25.0K | 20.1K | -55% | -$2.55M |
| DM | 2026-07-30 16:05 | 2026-07-28 | SEIC | GUARINO CARL | Dir | M - OptEx | $49.63 | +10.0K | 28.3K | +55% | +$496.3K |
| D | 2026-07-30 16:05 | 2026-07-28 | SEIC | GUARINO CARL | Dir | S - Sale+OE | $103.19 | -10.0K | 18.3K | -35% | -$1.03M |
| DM | 2026-07-28 16:08 | 2026-07-24 | SEIC | Sharma Sanjay | See Remarks* | M - OptEx | $71.12 | +20.0K | 59.8K | +50% | +$1.42M |
| D | 2026-07-28 16:08 | 2026-07-24 | SEIC | Sharma Sanjay | See Remarks* | S - Sale+OE | $99.33 | -20.0K | 39.8K | -33% | -$1.99M |
| 2026-07-28 16:07 | 2026-07-24 | SEIC | Shah Sneha S. | See Remarks* | F - Tax | $96.73 | -3,746 | 14.1K | -21% | -$362.4K | |
| M | 2026-06-29 13:55 | 2026-06-26+ | SEIC | WEST ALFRED P JR | COB Emeritus | S - Sale | $87.26 | -57.3K | 6.82M | -0.8% | -$5.00M |
| 2026-06-11 10:23 | 2026-06-09 | SEIC | DORAN WILLIAM | Dir | S - Sale | $90.50 | -5,000 | 618.8K | -0.8% | -$452.5K | |
| DM | 2026-05-05 09:14 | 2026-05-04 | SEIC | MCCARTHY KATHRYN | Dir | M - OptEx | $49.63 | +10.0K | 87.9K | +13% | +$496.3K |
| D | 2026-05-05 09:14 | 2026-05-04 | SEIC | MCCARTHY KATHRYN | Dir | S - Sale+OE | $91.07 | -10.0K | 77.9K | -11% | -$910.7K |
| D | 2026-04-30 11:35 | 2026-04-28 | SEIC | Warner Mark Andrew | In Remarks | M - OptEx | $48.47 | +4,000 | 4,921 | +434% | +$193.9K |
| D | 2026-04-30 11:35 | 2026-04-28 | SEIC | Warner Mark Andrew | In Remarks | S - Sale+OE | $91.16 | -4,000 | 921 | -81% | -$364.6K |
| 2026-04-24 13:13 | 2026-04-23 | SEIC | McCabe Philip | See Remarks | S - Sale | $91.82 | -15.0K | 54.9K | -21% | -$1.38M | |
| DM | 2026-04-23 17:35 | 2026-04-23 | SEIC | Sharma Sanjay | See Remarks* | M - OptEx | $49.63 | +25.0K | 64.8K | +63% | +$1.24M |
| DM | 2026-04-23 17:35 | 2026-04-23 | SEIC | Sharma Sanjay | See Remarks* | S - Sale+OE | $90.12 | -25.0K | 39.8K | -39% | -$2.25M |
| D | 2026-04-23 17:33 | 2026-04-23 | SEIC | Peterson Michael | EVP | M - OptEx | $48.47 | +10.0K | 30.1K | +50% | +$484.7K |
| D | 2026-04-23 17:33 | 2026-04-23 | SEIC | Peterson Michael | EVP | S - Sale+OE | $90.00 | -10.0K | 20.1K | -33% | -$900.0K |
| 2026-04-01 13:41 | 2026-03-31 | SEIC | Hicke Ryan | CEO, Dir | F - Tax | $77.21 | -4,349 | 192.8K | -2% | -$335.8K | |
| 2026-03-19 | 2026-03-18 | SEIC | Denham Sean | CFO, COO, Executive VP | F - Tax | $78.77 | -7,673 | 57.8K | -12% | -$604.4K | |
| M | 2026-03-12 | 2026-03-10+ | SEIC | WEST ALFRED P JR | COB Emeritus | S - Sale | $80.12 | -62.4K | 6.88M | -0.9% | -$5.00M |
| DM | 2026-02-26 | 2026-02-25 | SEIC | Warner Mark Andrew | See Remarks | A - Grant | $71.12 | +4,000 | 2,921 | New | +$284.5K |
| D | 2026-02-26 | 2026-02-25 | SEIC | Warner Mark Andrew | See Remarks | S - Sale | $81.74 | -4,000 | 921 | -81% | -$327.0K |
| DM | 2026-02-02 | 2026-01-29 | SEIC | Hicke Ryan | CEO, Dir | S - Sale+OE | $87.36 | -80.0K | 260.2K | -24% | -$6.99M |
| DM | 2026-02-02 | 2026-01-29 | SEIC | Hicke Ryan | CEO, Dir | M - OptEx | $61.30 | +80.0K | 277.2K | +41% | +$4.90M |
| 2026-01-02 | 2026-01-01 | SEIC | WEST ALFRED P JR | COB Emeritus | F - Tax | $82.02 | -3,482 | 6.94M | -0.1% | -$285.6K | |
| 2025-12-30 | 2025-12-30 | SEIC | ROMEO CARMEN | Dir | G - Gift | $0.00 | -15.5K | 1.56M | -1.0% | $0 | |
| 2025-12-29 | 2025-12-05 | SEIC | Warner Mark Andrew | See Remarks | F - Tax | $81.25 | -379 | 921 | -29% | -$30.8K | |
| 2025-12-29 | 2025-12-05 | SEIC | Peterson Michael | EVP | F - Tax | $81.25 | -1,063 | 20.1K | -5% | -$86.4K | |
| 2025-12-29 | 2025-12-05 | SEIC | MCCARTHY KATHRYN | Dir | F - Tax | $81.25 | -24 | 77.9K | -0.0% | -$1,950 | |
| 2025-12-29 | 2025-12-05 | SEIC | WEST ALFRED P JR | Executive COB, Dir | F - Tax | $81.25 | -1,100 | 6.94M | -0.0% | -$89.4K | |
| 2025-12-29 | 2025-12-05 | SEIC | McCabe Philip | See Remarks | F - Tax | $81.25 | -1,094 | 69.9K | -2% | -$88.9K | |
| 2025-12-23 | 2025-12-22 | SEIC | DORAN WILLIAM | Dir | S - Sale | $83.85 | -7,000 | 623.8K | -1% | -$587.0K | |
| DM | 2025-12-16 | 2025-12-12 | SEIC | Sharma Sanjay | See Remarks* | A - Grant | — | +15.9K | 39.8K | +67% | — |
| 2025-12-16 | 2025-12-12 | SEIC | GUARINO CARL | Dir | A - Grant | — | +2,266 | 18.3K | +14% | — | |
| D | 2025-12-16 | 2025-12-12 | SEIC | Peterson Michael | EVP | A - Grant | — | +7,711 | 21.2K | +57% | — |
| 2025-12-16 | 2025-12-12 | SEIC | Risi Karin A. | Dir | A - Grant | — | +2,266 | 4,342 | +109% | — | |
| 2025-12-16 | 2025-12-12 | SEIC | Naratil Thomas C. | Dir | A - Grant | — | +2,266 | 4,342 | +109% | — | |
| D | 2025-12-16 | 2025-12-12 | SEIC | McCabe Philip | See Remarks | A - Grant | — | +8,434 | 71.0K | +13% | — |
| 2025-12-16 | 2025-12-12 | SEIC | ROMEO CARMEN | Dir | A - Grant | — | +2,266 | 1.58M | +0.1% | — | |
| 2025-12-16 | 2025-12-12 | SEIC | MCCARTHY KATHRYN | Dir | A - Grant | — | +2,266 | 77.9K | +3% | — | |
| D | 2025-12-16 | 2025-12-12 | SEIC | Denham Sean | EVP, CFO | A - Grant | — | +13.3K | 65.4K | +25% | — |
| D | 2025-12-16 | 2025-12-12 | SEIC | LANE MICHAEL | EVP | A - Grant | — | +8,916 | 42.0K | +27% | — |
| 2025-12-16 | 2025-12-12 | SEIC | DORAN WILLIAM | Dir | A - Grant | — | +2,266 | 630.8K | +0.4% | — | |
| D | 2025-12-16 | 2025-12-12 | SEIC | Hicke Ryan | CEO, Dir | A - Grant | — | +25.9K | 197.2K | +15% | — |
| 2025-12-16 | 2025-12-12 | SEIC | Brassington Jonathan | Dir | A - Grant | — | +2,266 | 6,207 | +57% | — | |
| D | 2025-12-08 | 2025-12-04 | SEIC | McCabe Philip | See Remarks | M - OptEx | $53.34 | +12.0K | 74.5K | +19% | +$640.1K |
| D | 2025-12-08 | 2025-12-04 | SEIC | McCabe Philip | See Remarks | S - Sale+OE | $81.11 | -12.0K | 62.5K | -16% | -$973.3K |
| D | 2025-12-05 | 2025-12-03 | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale+OE | $80.87 | -24.8K | 6.94M | -0.4% | -$2.00M |
| D | 2025-12-05 | 2025-12-03 | SEIC | WEST ALFRED P JR | Executive COB, Dir | M - OptEx | $53.34 | +30.0K | 6.97M | +0.4% | +$1.60M |
| D | 2025-11-18 | 2025-11-17 | SEIC | DORAN WILLIAM | Dir | M - OptEx | $53.34 | +10.0K | 628.5K | +2% | +$533.4K |
| D | 2025-11-13 | 2025-11-12 | SEIC | Peterson Michael | EVP | S - Sale+OE | $84.21 | -25.0K | 13.5K | -65% | -$2.11M |
| D | 2025-11-13 | 2025-11-12 | SEIC | Peterson Michael | EVP | M - OptEx | $54.34 | +25.0K | 38.5K | +185% | +$1.36M |
| D | 2025-11-12 | 2025-11-11 | SEIC | ROMEO CARMEN | Dir | S - Sale+OE | $84.01 | -5,000 | 1.57M | -0.3% | -$420.1K |
| D | 2025-11-12 | 2025-11-11 | SEIC | ROMEO CARMEN | Dir | M - OptEx | $53.34 | +5,000 | 1.58M | +0.3% | +$266.7K |
| D | 2025-10-28 | 2025-10-24 | SEIC | McCabe Philip | See Remarks | M - OptEx | $53.34 | +12.0K | 62.5K | +24% | +$640.1K |
| D | 2025-09-29 | 2025-09-29 | SEIC | MCCARTHY KATHRYN | Dir | S - Sale+OE | $85.66 | -10.0K | 75.6K | -12% | -$856.6K |
| D | 2025-09-29 | 2025-09-29 | SEIC | MCCARTHY KATHRYN | Dir | M - OptEx | $53.34 | +10.0K | 85.6K | +13% | +$533.4K |
| D | 2025-09-24 | 2025-09-23 | SEIC | GUARINO CARL | Dir | M - OptEx | $53.34 | +10.0K | 26.0K | +62% | +$533.4K |
| D | 2025-09-24 | 2025-09-23 | SEIC | GUARINO CARL | Dir | S - Sale+OE | $86.41 | -10.0K | 16.0K | -38% | -$864.1K |
| 2025-09-17 | 2025-09-16 | SEIC | LANE MICHAEL | EVP | F - Tax | $86.60 | -3,935 | 33.1K | -11% | -$340.8K | |
| DM | 2025-08-20 | 2025-08-19 | SEIC | Hicke Ryan | CEO, Dir | M - OptEx | $49.63 | +35.0K | 188.8K | +23% | +$1.74M |
| D | 2025-08-20 | 2025-08-19 | SEIC | Hicke Ryan | CEO, Dir | S - Sale+OE | $88.30 | -35.0K | 171.3K | -17% | -$3.09M |
| D | 2025-08-08 | 2025-08-07 | SEIC | Peterson Michael | EVP | M - OptEx | $61.81 | +7,089 | 20.6K | +53% | +$438.2K |
| D | 2025-08-08 | 2025-08-07 | SEIC | Peterson Michael | EVP | S - Sale+OE | $88.55 | -7,089 | 13.5K | -34% | -$627.7K |
| D | 2025-08-06 | 2025-08-05 | SEIC | Peterson Michael | EVP | S - Sale+OE | $88.69 | -684 | 13.5K | -5% | -$60.7K |
| D | 2025-08-06 | 2025-08-05 | SEIC | Peterson Michael | EVP | M - OptEx | $61.81 | +684 | 14.2K | +5% | +$42.3K |
| D | 2025-08-04 | 2025-07-31 | SEIC | Peterson Michael | EVP | S - Sale+OE | $88.51 | -4,727 | 13.5K | -26% | -$418.4K |
| D | 2025-08-04 | 2025-07-31 | SEIC | Peterson Michael | EVP | M - OptEx | $61.81 | +4,727 | 18.2K | +35% | +$292.2K |
| D | 2025-07-30 | 2025-07-29 | SEIC | Warner Mark Andrew | See Remarks | S - Sale+OE | $88.75 | -5,000 | 1,300 | -79% | -$443.8K |
| D | 2025-07-30 | 2025-07-29 | SEIC | Warner Mark Andrew | See Remarks | M - OptEx | $49.63 | +5,000 | 6,300 | +385% | +$248.2K |
| 2025-07-24 | 2025-07-22 | SEIC | Risi Karin A. | Dir | A - Grant | — | +2,076 | 2,076 | New | — | |
| 2025-07-24 | 2025-07-22 | SEIC | Naratil Thomas C. | Dir | A - Grant | — | +2,076 | 2,076 | New | — | |
| M | 2025-05-30 | 2025-05-28+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $85.08 | -141.1K | 6.94M | -2% | -$12.01M |
| DM | 2025-05-16 | 2025-05-15 | SEIC | Peterson Michael | EVP | M - OptEx | $57.52 | +50.0K | 51.0K | +5,000% | +$2.88M |
| D | 2025-05-16 | 2025-05-15 | SEIC | Peterson Michael | EVP | S - Sale+OE | $84.27 | -50.0K | 13.5K | -79% | -$4.21M |
| D | 2025-05-16 | 2025-05-14 | SEIC | Sharma Sanjay | See Remarks* | M - OptEx | $53.34 | +20.0K | 43.9K | +84% | +$1.07M |
| D | 2025-05-16 | 2025-05-14 | SEIC | Sharma Sanjay | See Remarks* | S - Sale+OE | $83.40 | -20.0K | 23.9K | -46% | -$1.67M |
| D | 2025-05-16 | 2025-05-14 | SEIC | Hicke Ryan | CEO | M - OptEx | $53.34 | +24.0K | 192.3K | +14% | +$1.28M |
| D | 2025-05-16 | 2025-05-14 | SEIC | Hicke Ryan | CEO | S - Sale+OE | $83.36 | -21.0K | 171.3K | -11% | -$1.75M |
| 2025-04-01 | 2025-03-31 | SEIC | Hicke Ryan | CEO | F - Tax | $77.11 | -4,349 | 168.3K | -3% | -$335.4K | |
| 2025-03-19 | 2025-03-18 | SEIC | Denham Sean | EVP, CFO | F - Tax | $74.96 | -7,823 | 52.2K | -13% | -$586.4K | |
| 2025-03-07 | 2025-03-05 | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $76.28 | -1,372 | 7.08M | -0.0% | -$104.7K | |
| M | 2025-03-05 | 2025-03-03+ | SEIC | WEST ALFRED P JR | Executive COB, Dir | S - Sale | $77.88 | -152.8K | 7.20M | -2% | -$11.90M |
| DM | 2025-03-05 | 2025-03-03 | SEIC | Warner Mark Andrew | See Remarks | M - OptEx | $53.34 | +5,000 | 3,800 | New | +$266.7K |
| D | 2025-03-05 | 2025-03-03 | SEIC | Warner Mark Andrew | See Remarks | S - Sale+OE | $80.39 | -5,000 | 1,300 | -79% | -$401.9K |
| 2025-01-03 | 2024-12-31 | SEIC | DORAN WILLIAM | Dir | G - Gift | $0.00 | -47.5K | 618.5K | -7% | $0 |
Purchase Sale Sale after option exercise All abbreviations