SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

                                  SCHEDULE 13G

                  Under the Securities and Exchange Act of 1934

                              Key Technology, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    493143101
                                 (CUSIP Number)

                                October 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. 493143101

--------------------------------------------------------------------------------
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) [ ]
      (b) [X]*

*     This filing describes the reporting person's relationship with other
      persons, but the reporting person does not affirm the existence of a
      group.
--------------------------------------------------------------------------------
3)    SEC Use Only

--------------------------------------------------------------------------------
4)    Citizenship or Place of Organization

      Delaware
--------------------------------------------------------------------------------
                        5)   Sole Voting Power

                             -0-
                        --------------------------------------------------------
  NUMBER OF SHARES      6)   Shared Voting Power
BENEFICIALLY OWNED BY
EACH REPORTING PERSON        339,988
        WITH            --------------------------------------------------------
                        7)   Sole Dispositive Power

                             -0-
                        --------------------------------------------------------
                        8)   Shared Dispositive Power

                             556,455
--------------------------------------------------------------------------------
9)    Aggregate Amount Beneficially Owned by Each Reporting Person

      556,455
--------------------------------------------------------------------------------
10)   Check if the Aggregate Amount in Row (9) Excludes Certain Shares

      Not Applicable
--------------------------------------------------------------------------------
11)   Percent of Class Represented by Amount In Row (9)

      10.47%
--------------------------------------------------------------------------------
12)   Type of Reporting Person

      CO
--------------------------------------------------------------------------------



CUSIP NO. 493143101

--------------------------------------------------------------------------------
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) [ ]
      (b) [X]*

*     This filing describes the reporting person's relationship with other
      persons, but the reporting person does not affirm the existence of a
      group.
--------------------------------------------------------------------------------
3)    SEC Use Only

--------------------------------------------------------------------------------
4)    Citizenship or Place of Organization

      Minnesota
--------------------------------------------------------------------------------
                        5)   Sole Voting Power

                             -0-
                        --------------------------------------------------------
  NUMBER OF SHARES      6)   Shared Voting Power
BENEFICIALLY OWNED BY
EACH REPORTING PERSON        339,988
        WITH            --------------------------------------------------------
                        7)   Sole Dispositive Power

                             -0-
                        --------------------------------------------------------
                        8)   Shared Dispositive Power

                             556,455
--------------------------------------------------------------------------------
9)    Aggregate Amount Beneficially Owned by Each Reporting Person

      556,455
--------------------------------------------------------------------------------
10)   Check if the Aggregate Amount in Row (9) Excludes Certain Shares

      Not Applicable
--------------------------------------------------------------------------------
11)   Percent of Class Represented by Amount In Row (9)

      10.47%
--------------------------------------------------------------------------------
12)   Type of Reporting Person

      IA
--------------------------------------------------------------------------------



1(a) Name of Issuer:                         Key Technology, Inc.

1(b) Address of Issuer's Principal           150 Avery Street
     Executive Offices:                      Walla Walla, WA 99362

2(a) Name of Person Filing:                  (a) Ameriprise Financial, Inc.
                                                 ("AFI")

                                             (b) Columbia Management Investment
                                                 Advisers, LLC (formerly known
                                                 as RiverSource Investments,
                                                 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:                           493143101

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 (formerly known as
     RiverSource Investments, 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: November 10, 2010

                                        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