<SEC-DOCUMENT>0001047127-21-000018-index.html : 20210520 <SEC-HEADER>0001047127-21-000018.hdr.sgml : 20210520 <ACCEPTANCE-DATETIME>20210520171133 ACCESSION NUMBER: 0001047127-21-000018 CONFORMED SUBMISSION TYPE: SD PUBLIC DOCUMENT COUNT: 4 <RULE> <RULE-NAME>13p-1 <ITEM> <ITEM-NUMBER>1.01 <ITEM-PERIOD>20201231 </ITEM> <ITEM> <ITEM-NUMBER>1.02 <ITEM-PERIOD>20201231 </ITEM> </RULE> FILED AS OF DATE: 20210520 DATE AS OF CHANGE: 20210520 FILER: COMPANY DATA: COMPANY CONFORMED NAME: AMKOR TECHNOLOGY, INC. CENTRAL INDEX KEY: 0001047127 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 231722724 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SD SEC ACT: 1934 Act SEC FILE NUMBER: 000-29472 FILM NUMBER: 21945391 BUSINESS ADDRESS: STREET 1: 2045 EAST INNOVATION CIRCLE CITY: TEMPE STATE: AZ ZIP: 85284 BUSINESS PHONE: 480-821-5000 MAIL ADDRESS: STREET 1: 2045 EAST INNOVATION CIRCLE CITY: TEMPE STATE: AZ ZIP: 85284 FORMER COMPANY: FORMER CONFORMED NAME: AMKOR TECHNOLOGY INC DATE OF NAME CHANGE: 19971001 </SEC-HEADER> <DOCUMENT> <TYPE>SD <SEQUENCE>1 <FILENAME>a2020formsdandcmr.htm <DESCRIPTION>SD <TEXT> Document 1 - file: a2020formsdandcmr.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-1.01 <SEQUENCE>2 <FILENAME>exhibit101-2020conflictmin.htm <DESCRIPTION>EX-1.01 <TEXT> Document 2 - file: exhibit101-2020conflictmin.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>image_01a.jpg <TEXT> Document 3 - file: image_01a.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>image_02a.jpg <TEXT> Document 4 - file: image_02a.jpg
</DOCUMENT> </SEC-DOCUMENT>