0001193125-24-170225.txt : 20240627 0001193125-24-170225.hdr.sgml : 20240627 20240627130455 ACCESSION NUMBER: 0001193125-24-170225 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240627 DATE AS OF CHANGE: 20240627 EFFECTIVENESS DATE: 20240627 FILER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA ACORN TRUST CENTRAL INDEX KEY: 0000002110 ORGANIZATION NAME: 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: 241077680 BUSINESS ADDRESS: STREET 1: 71 S. WACKER DRIVE, SUITE 2500 CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 3126349200 MAIL ADDRESS: STREET 1: 71 S. WACKER DRIVE, SUITE 2500 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 S000009185 Columbia Acorn International C000024958 Columbia Acorn International Class A LAIAX C000024961 Columbia Acorn International Institutional Class ACINX C000097733 Columbia Acorn International Institutional 2 Class CAIRX C000122738 Columbia Acorn International Advisor Class CCIRX C000122739 Columbia Acorn International Institutional 3 Class CCYIX C000251060 Columbia Acorn International Class S 497K 1 d852611d497k.htm COLUMBIA ACORN TRUST COLUMBIA ACORN TRUST
Supplement dated June 27, 2024
to the Summary Prospectus, as supplemented (as applicable) of each of the following funds: 
Fund
Summary Prospectus Dated
Columbia Acorn Trust
  Columbia Acorn European Fund
5/1/2024
  Columbia Acorn Fund
5/1/2024
  Columbia Acorn International
5/1/2024
  Columbia Acorn International Select
5/1/2024
  Columbia Thermostat Fund
5/1/2024
The Board of Trustees of the funds (each, a Fund, and collectively, the Funds) recently approved the conversion of all Class Advisor (Class Adv) shares of a Fund to Class Institutional (Class Inst) shares of the same Fund and the subsequent elimination of Class Adv as a share class of any Fund.
Effective at close of business on November 22, 2024, Class Adv shares of the Fund will be converted into Class Inst shares of the Fund. This will be a tax-free transaction for existing Class Adv shareholders. Effective on November 25, 2024, all references to Class Adv are hereby deleted from the Fund’s Summary Prospectus.
Shareholders should retain this Supplement for future reference.
SUP000_00_153_(06/24)