sc13g
 
 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities and Exchange Act of 1934
Amkor Technology, Inc.
 
(Name of Issuer)
Common Stock
 
(Title of Class of Securities)
031652100
 
(CUSIP Number)
December 31, 2010
 
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
     This Schedule is filed pursuant to Rule 13d-1(b)
The information required in the remainder of this cover page (except any items to which the form provides a cross-reference) shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act.
 
 


 

                     
CUSIP No.
 
031652100 
 

 

           
1   NAME OF REPORTING PERSON
Ameriprise Financial, Inc.

S.S. or I.R.S. Identification
IRS No. 13-3180631

No. of Above Person
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)   o
  (b)   þ*
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  5   SOLE VOTING POWER
     
NUMBER OF   -0-
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   6,579,256
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   -0-
       
WITH 8   SHARED DISPOSITIVE POWER
     
    15,991,896
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  15,991,896
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  Not Applicable
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  8.70%
     
12   TYPE OF REPORTING PERSON
   
  CO
* This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.


 

                     
CUSIP No.
 
031652100 
 

 

           
1   NAME OF REPORTING PERSON
Columbia Management
Investment Advisers, LLC

S.S. or I.R.S. Identification
IRS No. 41-1533211

No. of Above Person
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

  (a)   o
  (b)   þ*
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Minnesota
       
  5   SOLE VOTING POWER
     
NUMBER OF   -0-
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   6,579,256
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   -0-
       
WITH 8   SHARED DISPOSITIVE POWER
     
    15,991,896
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  15,991,896
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  Not Applicable
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  8.70%
     
12   TYPE OF REPORTING PERSON
   
  IA
* This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.


 

         
1(a)
  Name of Issuer:   Amkor Technology, Inc.
 
       
1(b)
  Address of Issuer’s Principal   1900 S Price Rd.
 
  Executive Offices:   Chandler, AZ 85248
 
       
2(a)
  Name of Person Filing:   (a) Ameriprise Financial, Inc. (“AFI”)
 
      (b) Columbia Management Investment Advisers, LLC (“CMIA”)
 
       
2(b)
  Address of Principal Business Office:   (a) Ameriprise Financial, Inc.
 
      145 Ameriprise Financial Center
 
      Minneapolis, MN 55474
 
      (b) 100 Federal St.
 
      Boston, MA 02110
 
       
2(c)
  Citizenship:   (a) Delaware
 
      (b) Minnesota
 
       
2(d)
  Title of Class of Securities:   Common Stock
 
       
2(e)
  Cusip Number:   031652100
3   Information if statement is filed pursuant to Rules 13d-1(b) or 13d-2(b):
     (a) Ameriprise Financial, Inc.
    A parent holding company in accordance with Rule 13d-1(b)(1)(ii)(G). (Note: See Item 7)
     (b) Columbia Management Investment Advisers, LLC
    An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E)
 
4   Incorporated by reference to Items (5)-(9) and (11) of the cover page pertaining to each reporting person.
 
    AFI, as the parent company of CMIA, may be deemed to beneficially own the shares reported herein by CMIA. Accordingly, the shares reported herein by AFI include those shares separately reported herein by CMIA.
 
    Each of AFI and CMIA disclaims beneficial ownership of any shares reported on this Schedule.
 
5   Ownership of 5% or Less of a Class:
 
    If this statement is being filed to report the fact as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following ( ).

 


 

6   Ownership of more than 5% on Behalf of Another Person: Not Applicable
 
7   Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company:
     AFI: See Exhibit I
8   Identification and Classification of Members of the Group:
     Not Applicable
9   Notice of Dissolution of Group:
     Not Applicable
10   Certification:
 
    By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect.

 


 

Signature
    After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Dated: February 11, 2011
         
  Ameriprise Financial, Inc.
 
 
  By:   /s/ Wade M. Voigt    
    Name:   Wade M. Voigt   
    Title:   Director — Fund Administration   
 
  Columbia Management Investment
Advisers, LLC
 
 
  By:   /s/ Amy Johnson    
    Name:   Amy Johnson   
    Title:   Chief Operating Officer   
 
  Contact Information    
    Wade M. Voigt   
    Director — Fund Administration
Telephone: (612) 671-5682 
 

 


 

Exhibit Index
     
Exhibit I
  Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company.
 
   
Exhibit II
  Joint Filing Agreement

 

exv99wi
Exhibit I
to
Schedule 13G
Ameriprise Financial, Inc., a Delaware Corporation, is a parent holding company. The classification and identity of the relevant subsidiaries is as follows:
Investment Adviser — Columbia Management Investment Advisers, LLC is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.

 

exv99wii
Exhibit II
to
Schedule 13G
Joint Filing Agreement
The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated February 11, 2011 in connection with their beneficial ownership of Amkor Technology, Inc. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments thereto.
         
  Ameriprise Financial, Inc.
 
 
  By:   /s/ Wade M. Voigt    
    Wade M. Voigt   
    Director — Fund Administration   
 
  Columbia Management Investment Advisers, LLC
 
 
  By:   /s/ Amy Johnson    
    Amy Johnson   
    Chief Operating Officer