SEC Form 4 · accession 0001628280-26-045937
SEI INVESTMENTS CO · SEIC
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Alfred P West Jr.
Other
Period of report
Jun 26, 2026
Accepted (ET)
Jun 29, 2026 · 1:55 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000350894
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jun 26, 2026 | S | 46,162 | $87.21 | D | 6,829,621 | D | |
| Common StockF2 | Jun 26, 2026 | S | 3,838 | $87.67 | D | 6,825,783 | D | |
| Common StockF3 | Jun 29, 2026 | S | 5,652 | $87.18 | D | 6,820,131 | D | |
| Common StockF4 | Jun 29, 2026 | S | 1,680 | $88.09 | D | 6,818,451 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Represents the weighted average of a range of sale prices from $86.60 to $87.59. 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.
- F2Represents the weighted average of a range of sale prices from $87.60 to $88.07. 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.
- F3Represents the weighted average of a range of sale prices from $86.78 to $87.75. 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.
- F4Represents the weighted average of a range of sale prices from $87.82 to $88.37. 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.