Alfred P. West Jr. - 03 Dec 2025 Form 4 Insider Report for SEI INVESTMENTS CO (SEIC)

Role
Executive Chairman, Director
Signature
/s/ Alfred P. West, Jr., by Diane Gallagher, attorney in fact
Issuer symbol
SEIC
Transactions as of
03 Dec 2025
Net transactions value
-$402,950
Form type
4
Filing time
05 Dec 2025, 17:57:15 UTC
Previous filing
30 May 2025
Next filing
29 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
WEST ALFRED P JR Executive Chairman, Director 1 FREEDOM VALLEY DRIVE, OAKS /s/ Alfred P. West, Jr., by Diane Gallagher, attorney in fact 05 Dec 2025 0001059374

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SEIC Common Stock Options Exercise $1,600,200 +30,000 +0.43% $53.34 6,967,582 03 Dec 2025 Direct
transaction SEIC Common Stock Sale $2,003,150 -24,770 -0.36% $80.87 6,942,812 03 Dec 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SEIC STOCK OPTION (RIGHT TO PURCHASE) Options Exercise -30,000 -100% 0 03 Dec 2025 STOCK OPTION (RIGHT TO PURCHASE) 30,000 $53.34 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the weighted average of a range of sale prices from $80.70 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.
F2 Received as employment compensation.