<SEC-DOCUMENT>0000350894-21-000026-index.html : 20210427 <SEC-HEADER>0000350894-21-000026.hdr.sgml : 20210427 <ACCEPTANCE-DATETIME>20210427144644 ACCESSION NUMBER: 0000350894-21-000026 CONFORMED SUBMISSION TYPE: DEF 14A PUBLIC DOCUMENT COUNT: 49 CONFORMED PERIOD OF REPORT: 20210602 FILED AS OF DATE: 20210427 DATE AS OF CHANGE: 20210427 FILER: 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: DEF 14A SEC ACT: 1934 Act SEC FILE NUMBER: 000-10200 FILM NUMBER: 21858325 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 </SEC-HEADER> <DOCUMENT> <TYPE>DEF 14A <SEQUENCE>1 <FILENAME>seicproxyjune22021shareh.htm <DESCRIPTION>DEFINITIVE PROXY STATEMENT <TEXT> Document 1 - file: seicproxyjune22021shareh.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>seicproxyjune22021shareh001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: seicproxyjune22021shareh001.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>seicproxyjune22021shareh002.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: seicproxyjune22021shareh002.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>seicproxyjune22021shareh003.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: seicproxyjune22021shareh003.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>seicproxyjune22021shareh004.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: seicproxyjune22021shareh004.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>seicproxyjune22021shareh005.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: seicproxyjune22021shareh005.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>seicproxyjune22021shareh006.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: seicproxyjune22021shareh006.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>seicproxyjune22021shareh007.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: seicproxyjune22021shareh007.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>seicproxyjune22021shareh008.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: seicproxyjune22021shareh008.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>seicproxyjune22021shareh009.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: seicproxyjune22021shareh009.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>seicproxyjune22021shareh010.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: seicproxyjune22021shareh010.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>seicproxyjune22021shareh011.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: seicproxyjune22021shareh011.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>seicproxyjune22021shareh012.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: seicproxyjune22021shareh012.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>seicproxyjune22021shareh013.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: seicproxyjune22021shareh013.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>seicproxyjune22021shareh014.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: seicproxyjune22021shareh014.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>seicproxyjune22021shareh015.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: seicproxyjune22021shareh015.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>seicproxyjune22021shareh016.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: seicproxyjune22021shareh016.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>seicproxyjune22021shareh017.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: seicproxyjune22021shareh017.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>seicproxyjune22021shareh018.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: seicproxyjune22021shareh018.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>seicproxyjune22021shareh019.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: seicproxyjune22021shareh019.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>seicproxyjune22021shareh020.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 21 - file: seicproxyjune22021shareh020.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>seicproxyjune22021shareh021.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: seicproxyjune22021shareh021.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>seicproxyjune22021shareh022.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: seicproxyjune22021shareh022.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>24 <FILENAME>seicproxyjune22021shareh023.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 24 - file: seicproxyjune22021shareh023.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>25 <FILENAME>seicproxyjune22021shareh024.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 25 - file: seicproxyjune22021shareh024.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>26 <FILENAME>seicproxyjune22021shareh025.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 26 - file: seicproxyjune22021shareh025.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>27 <FILENAME>seicproxyjune22021shareh026.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 27 - file: seicproxyjune22021shareh026.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>28 <FILENAME>seicproxyjune22021shareh027.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 28 - file: seicproxyjune22021shareh027.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>29 <FILENAME>seicproxyjune22021shareh028.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 29 - file: seicproxyjune22021shareh028.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>30 <FILENAME>seicproxyjune22021shareh029.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 30 - file: seicproxyjune22021shareh029.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>31 <FILENAME>seicproxyjune22021shareh030.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 31 - file: seicproxyjune22021shareh030.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>32 <FILENAME>seicproxyjune22021shareh031.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 32 - file: seicproxyjune22021shareh031.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>33 <FILENAME>seicproxyjune22021shareh032.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 33 - file: seicproxyjune22021shareh032.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>34 <FILENAME>seicproxyjune22021shareh033.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 34 - file: seicproxyjune22021shareh033.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>35 <FILENAME>seicproxyjune22021shareh034.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 35 - file: seicproxyjune22021shareh034.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>36 <FILENAME>seicproxyjune22021shareh035.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 36 - file: seicproxyjune22021shareh035.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>37 <FILENAME>seicproxyjune22021shareh036.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 37 - file: seicproxyjune22021shareh036.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>38 <FILENAME>seicproxyjune22021shareh037.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 38 - file: seicproxyjune22021shareh037.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>39 <FILENAME>seicproxyjune22021shareh038.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 39 - file: seicproxyjune22021shareh038.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>40 <FILENAME>seicproxyjune22021shareh039.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 40 - file: seicproxyjune22021shareh039.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>41 <FILENAME>seicproxyjune22021shareh040.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 41 - file: seicproxyjune22021shareh040.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>42 <FILENAME>seicproxyjune22021shareh041.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 42 - file: seicproxyjune22021shareh041.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>43 <FILENAME>seicproxyjune22021shareh042.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 43 - file: seicproxyjune22021shareh042.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>44 <FILENAME>seicproxyjune22021shareh043.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 44 - file: seicproxyjune22021shareh043.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>45 <FILENAME>seicproxyjune22021shareh044.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 45 - file: seicproxyjune22021shareh044.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>46 <FILENAME>seicproxyjune22021shareh045.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 46 - file: seicproxyjune22021shareh045.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>47 <FILENAME>seicproxyjune22021shareh046.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 47 - file: seicproxyjune22021shareh046.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>48 <FILENAME>seicproxyjune22021shareh047.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 48 - file: seicproxyjune22021shareh047.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>49 <FILENAME>seicproxyjune22021shareh048.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 49 - file: seicproxyjune22021shareh048.jpg
</DOCUMENT> </SEC-DOCUMENT>