0001968582-23-000675.txt : 20231117 0001968582-23-000675.hdr.sgml : 20231117 20231117163011 ACCESSION NUMBER: 0001968582-23-000675 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231117 DATE AS OF CHANGE: 20231117 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SEI INVESTMENTS CO CENTRAL INDEX KEY: 0000350894 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211] IRS NUMBER: 231707341 STATE OF INCORPORATION: PA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 000-10200 FILM NUMBER: 231419197 BUSINESS ADDRESS: STREET 1: 1 FREEDOM VALLEY DRIVE CITY: OAKS STATE: PA ZIP: 19456-1100 BUSINESS PHONE: 6106761000 MAIL ADDRESS: STREET 1: 1 FREEDOM VALLEY DRIVE CITY: OAKS STATE: PA ZIP: 19456-1100 FORMER COMPANY: FORMER CONFORMED NAME: SEI INVESTMENT CO DATE OF NAME CHANGE: 20040806 FORMER COMPANY: FORMER CONFORMED NAME: SEI CORP DATE OF NAME CHANGE: 19920703 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: WEST ALFRED P JR CENTRAL INDEX KEY: 0001059374 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1 FREEDOM VALLEY DRIVE CITY: OAKS STATE: PA ZIP: 19456 144 1 primary_doc.xml 144 0001059374 XXXXXXXX LIVE 0000350894 SEI Investments Company 000-10200 1 Freedom Valley Drive Oaks PA 19456 610-676-1000 Alfred P. West, Jr. Affiliate Common Stock J.P. Morgan Securities LLC

390 Madison Avenue 6th Floor New York NY 10017

215000 12562450 131587693 11/17/2023 NASDAQ Common Stock 10/31/2019 Private Transaction Issuer N 112000 10/31/2019 N/A Common Stock 11/01/2019 Private Transaction Issuer N 95000 11/01/2019 N/A Common Stock 12/11/2020 Private Transaction Issuer N 50000 12/11/2020 N/A N Alfred P. West, Jr.

C/o SEI Investments Company 1 Freedom Valley Drive Oaks PA 19456

Common Stock 09/11/2023 18808 1147575 Alfred P. West, Jr.

C/o SEI Investments Company 1 Freedom Valley Drive Oaks PA 19456

Common Stock 09/12/2023 70440 4261512 Alfred P. West, Jr.

C/o SEI Investments Company 1 Freedom Valley Drive Oaks PA 19456

Common Stock 09/13/2023 43192 2597619 11/17/2023 J.P. Morgan Securities LLC as agent and attorney-in-fact for Alfred P. West, Jr.