0000350894-18-000057.txt : 20181123 0000350894-18-000057.hdr.sgml : 20181123 20181123114431 ACCESSION NUMBER: 0000350894-18-000057 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20181120 FILED AS OF DATE: 20181123 DATE AS OF CHANGE: 20181123 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: WEST ALFRED P JR CENTRAL INDEX KEY: 0001059374 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-10200 FILM NUMBER: 181199400 MAIL ADDRESS: STREET 1: 1 FREEDOM VALLEY DRIVE CITY: OAKS STATE: PA ZIP: 19456 ISSUER: 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 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 4 1 primary_doc.xml PRIMARY DOCUMENT X0306 4 2018-11-20 0 0000350894 SEI INVESTMENTS CO SEIC 0001059374 WEST ALFRED P JR 1 FREEDOM VALLEY DRIVE OAKS PA 19456 0 0 1 0 COMMON STOCK 2018-11-20 4 S 0 100000 52.48 D 10386713 D COMMON STOCK 2018-11-21 4 S 0 45238 53.37 D 10341475 D RUTH MONTGOMERY (ATTORNEY IN FACT) 2018-11-23