Exhibit 99.1

A Schedule 13D was filed by James J. Kim and those members of the reporting
group who then constituted the group on November 28, 2005, as amended by
Amendment No. 1 filed with the Securities and Exchange Commission (the
"Commission") on April 4, 2008, Amendment No. 2 filed with the Commission
on March 19, 2009, Amendment No. 3 filed with the Commission on April 16,
2009 and Amendment No. 4 filed with the Commission on February 5, 2010 as
further amended from time to time (the "Schedule 13D").  Those individuals
and entities listed in the Schedule 13D, including the filers of Forms 3
filed on or about January 4, 2011 by Sujoda Investments, LP, James J. Kim
GRAT Remainder Trust UA Dated November 14, 2008 and John T. Kim 2007
Children's Trust dated December 28, 2007, may be deemed to be members of a
group (the "Group") who each exercise voting or investment power with respect
to shares of Amkor Technologies, Inc.'s (the "Issuer') Common Stock in
concert with other members of the Group.  The Group may be deemed to
beneficially own more than 10% of the outstanding voting securities of the
Issuer. The reporting person states that the filing of this Form 4 Report
shall not be deemed an admission that the reporting person is the beneficial
owner of the reported securities owned by the other members of the Group, for
the purpose of Section 16 of the Securities Exchange Act of 1934, as amended,
or for any other purpose.