Mark Andrew Warner - 05 Dec 2025 Form 4 Insider Report for SEI INVESTMENTS CO (SEIC)

Role
Title: Chief Accounting Officer and Controller
Signature
/s/Mark Andrew Warner, by Diane Gallagher, attorney in fact
Issuer symbol
SEIC
Transactions as of
05 Dec 2025
Net transactions value
-$30,794
Form type
4
Filing time
29 Dec 2025, 11:03:07 UTC
Previous filing
30 Jul 2025
Next filing
26 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Warner Mark Andrew Title: Chief Accounting Officer and Controller 1 FREEDOM VALLEY DRIVE, OAKS /s/Mark Andrew Warner, by Diane Gallagher, attorney in fact 29 Dec 2025 0001972425

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SEIC Common Stock Tax liability $30,794 -379 -29% $81.25 921 05 Dec 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld to satisfy tax obligations upon vesting of RSUs. This transaction was inadvertently not reported on a timely basis.

Remarks:

Title: Chief Accounting Officer and Controller