0001193125-15-164769.txt : 20150501 0001193125-15-164769.hdr.sgml : 20150501 20150501093804 ACCESSION NUMBER: 0001193125-15-164769 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20150501 DATE AS OF CHANGE: 20150501 EFFECTIVENESS DATE: 20150501 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: 15822211 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 d918906d497k.htm COLUMBIA ACORN TRUST COLUMBIA ACORN TRUST

Supplement dated May 1, 2015

to the Prospectus and Summary Prospectus dated May 1, 2015 for the following Fund:

 

Fund

COLUMBIA ACORN TRUST

Columbia Acorn USA®

Effective May 1, 2015, the prospectus and summary prospectus for the Fund are each hereby supplemented to reflect the following:

It is expected that Robert A. Mohn, lead portfolio manager of Columbia Acorn USA, Domestic Chief Investment Officer of Columbia Wanger Asset Management, LLC (“CWAM”) and Vice President of Columbia Acorn Trust will step down from those roles in the fourth quarter of 2015.

William J. Doyle, current co-portfolio manager of Columbia Acorn USA, will continue in that role. Mr. Mohn will continue to perform portfolio management services for the Fund leading up to his departure to ensure a smooth transition in management.

Shareholders should retain this Supplement for future reference.

SUP115_12_001_(05/15)