Philip McCabe - 05 Dec 2025 Form 4 Insider Report for SEI INVESTMENTS CO (SEIC)

Role: Title: Executive Vice President and Head of SEI's Investment Management Business
Signature: /s/ Philip McCabe by Diane Gallagher, attorney in fact
Issuer symbol: SEIC
Transactions as of: 05 Dec 2025
Net transactions value: -$88,888
Form type: 4
Filing time: 29 Dec 2025, 11:01:46 UTC
Previous filing: 08 Dec 2025
Next filing: 16 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McCabe Philip	Title: Executive Vice President and Head of SEI's Investment Management Business	ONE FREEDOM VALLEY DRIVE, OAKS	/s/ Philip McCabe by Diane Gallagher, attorney in fact	29 Dec 2025	0001964748

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SEIC	Common Stock	Tax liability	$88,888	-1,094	-1.5%	$81.25	69,884	05 Dec 2025	Direct	F1
holding	SEIC	Common Stock						2,442	05 Dec 2025	By Employee Stock Purchase Plan

* 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: Executive Vice President and Head of SEI's Investment Management Business