0001193125-15-402454.txt : 20151214 0001193125-15-402454.hdr.sgml : 20151214 20151214153904 ACCESSION NUMBER: 0001193125-15-402454 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20151214 DATE AS OF CHANGE: 20151214 EFFECTIVENESS DATE: 20151214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA ACORN TRUST CENTRAL INDEX KEY: 0000002110 IRS NUMBER: 362692100 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 497K SEC ACT: 1933 Act SEC FILE NUMBER: 002-34223 FILM NUMBER: 151285897 BUSINESS ADDRESS: STREET 1: 227 W MONROE STE 3000 CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3126349200 MAIL ADDRESS: STREET 1: 227 W MONROE STE 3000 CITY: CHICAGO STATE: IL ZIP: 60606 FORMER COMPANY: FORMER CONFORMED NAME: LIBERTY ACORN TRUST DATE OF NAME CHANGE: 20010424 FORMER COMPANY: FORMER CONFORMED NAME: ACORN INVESTMENT TRUST DATE OF NAME CHANGE: 19940204 FORMER COMPANY: FORMER CONFORMED NAME: ACORN FUND INC DATE OF NAME CHANGE: 19920703 0000002110 S000009186 Columbia Acorn USA C000024962 Columbia Acorn USA Class A LAUAX C000024963 Columbia Acorn USA Class B LAUBX C000024964 Columbia Acorn USA Class C LAUCX C000024965 Columbia Acorn USA Class Z AUSAX C000094634 Columbia Acorn USA Class I CAUIX C000122740 Columbia Acorn USA Class R4 CUSAX C000122741 Columbia Acorn USA Class R5 CYSRX C000122742 Columbia Acorn USA Class Y CUSYX 497K 1 d82899d497k.htm COLUMBIA ACORN TRUST Columbia Acorn Trust

Supplement dated December 14, 2015

to the Prospectus, Summary Prospectus and Statement of Additional Information (“SAI”)

dated May 1, 2015, each as supplemented, for the following Fund:

COLUMBIA ACORN TRUST

Columbia Acorn USA®

Effective January 1, 2016, the Prospectus, Summary Prospectus and SAI for Columbia Acorn USA are supplemented to reflect that Columbia Wanger Asset Management, LLC (“CWAM”), the investment adviser to the Fund, has appointed Matthew Litfin, CFA, as lead portfolio manager of the Fund. Mr. Litfin will also serve as the Director of Domestic Research and as an analyst at CWAM. Mr. Litfin has been associated with CWAM as an investment professional since 2015. He began his investment career in 1997. Prior to joining CWAM, Mr. Litfin served as an analyst and portfolio manager for funds that invested in small- and mid-cap companies. He earned a B.S. from the University of Tennessee and an M.B.A. from Harvard University.

Shareholders should retain this Supplement for future reference.

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