0001193125-15-162225.txt : 20150430 0001193125-15-162225.hdr.sgml : 20150430 20150430163846 ACCESSION NUMBER: 0001193125-15-162225 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20150430 DATE AS OF CHANGE: 20150430 EFFECTIVENESS DATE: 20150430 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: 15819398 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 S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A LACAX C000024955 Columbia Acorn Fund Class B LACBX C000024956 Columbia Acorn Fund Class C LIACX C000024957 Columbia Acorn Fund Class Z ACRNX C000094632 Columbia Acorn Fund Class I CANIX C000122735 Columbia Acorn Fund Class R4 CEARX C000122736 Columbia Acorn Fund Class R5 CRBRX C000122737 Columbia Acorn Fund Class Y CRBYX 497K 1 d918899d497k.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® Fund

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, co-portfolio manager of Columbia Acorn Fund, 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.

P. Zachary Egan, President of CWAM, and Fritz Kaegi, a portfolio manager and analyst at CWAM since 2004, will join the portfolio management team of Columbia Acorn Fund, and together with existing co-portfolio manager David L. Frank will take over management of Columbia Acorn Fund. 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.

SUP110_12_001_(05/15)