Philip McCabe - 24 Oct 2025 Form 4 Insider Report for SEI INVESTMENTS CO (SEIC)

Role: 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: 24 Oct 2025
Net transactions value: +$640,080
Form type: 4
Filing time: 28 Oct 2025, 15:13:55 UTC
Previous filing: 16 Dec 2024
Next filing: 08 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McCabe Philip	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	28 Oct 2025	0001964748

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SEIC	Common Stock	Options Exercise	$640,080	+12,000	+24%	$53.34	62,544	24 Oct 2025	Direct
holding	SEIC	Common Stock						2,442	24 Oct 2025	By Employee Stock Purchase Plan	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	Option to Purchase Common Stock	Options Exercise		+12,000			0	24 Oct 2025	Common Stock	0	$53.34	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 1,092.4827 shares purchased under the Issuer's Employee Stock Purchase Plan since the last report of the number of shares owned by the reporting person under such plan.
F2	Received as employment compensation

Remarks:

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