Form 4 for SEIC SEI INVESTMENTS CO
Accepted 2026-03-12 00:00:00 ET · period of report 2026-03-10 · accession 0001628280-26-017068 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-11 | S | D | 6,076 | $79.11 | 6,877,154 | D | — | — | (F4) Represents the weighted average of a range of sale prices from $78.66 to $79.64. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price. |
| 2 | Common | Common Stock | 2026-03-10 | S | D | 29,431 | $80.47 | 6,883,230 | D | — | — | (F3) Represents the weighted average of a range of sale prices from $80.12 to $81.04. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price. |
| 3 | Common | Common Stock | 2026-03-10 | S | D | 25,391 | $79.97 | 6,912,661 | D | — | — | (F2) Represents the weighted average of a range of sale prices from $79.12 to $80.11. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price. |
| 4 | Common | Common Stock | 2026-03-10 | S | D | 178 | $78.88 | 6,938,052 | D | — | — | (F1) All shares sold for the same price. |
| 5 | Common | Common Stock | 2026-03-11 | S | D | 1,371 | $79.94 | 6,875,783 | D | — | — | (F5) Represents the weighted average of a range of sale prices from $79.67 to $80.60. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price. |