0001193125-24-053382.txt : 20240229 0001193125-24-053382.hdr.sgml : 20240229 20240229160355 ACCESSION NUMBER: 0001193125-24-053382 CONFORMED SUBMISSION TYPE: 497K PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240229 DATE AS OF CHANGE: 20240229 EFFECTIVENESS DATE: 20240229 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: 333-269553 FILM NUMBER: 24703485 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 S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A LACAX C000024956 Columbia Acorn Fund Class C LIACX C000024957 Columbia Acorn Fund Institutional Class ACRNX C000122735 Columbia Acorn Fund Advisor Class CEARX C000122736 Columbia Acorn Fund Institutional 2 Class CRBRX C000122737 Columbia Acorn Fund Institutional 3 Class CRBYX 497K 1 d773324d497k.htm COLUMBIA ACORN TRUST COLUMBIA ACORN TRUST
Supplement dated February 29, 2024
to the Prospectus, Summary Prospectus, and Statement of Additional Information (SAI), each as supplemented as applicable, of the following fund (the Fund): 
Fund
Prospectus, Summary Prospectus and SAI Dated
Columbia Acorn Trust
 
 Columbia Acorn® Fund
May 1, 2023
Effective immediately, the following changes are hereby made to the Fund's Prospectus and Summary Prospectus.
The portfolio manager information under the caption “Fund Management” in the Summary Prospectus and in the “Summary of the Fund” section of the Prospectus is hereby superseded and replaced with the following: 
Portfolio Management
Title
Role with Fund
Service with the Fund Since
Erika K. Maschmeyer, CFA
Head of Domestic Equity and
Director of Domestic Research,
Portfolio Manager and Analyst at
the Investment Manager
Portfolio Manager since 2019
2016
The portfolio manager information under the “Primary Service Provider Contracts” caption in the “More Information About the Fund” section of the Prospectus is hereby revised with the following:
Portfolio Manager
Information about the portfolio manager primarily responsible for overseeing the Fund’s investments is shown below. The SAI provides additional information about the portfolio manager, including information relating to compensation, other accounts managed by the portfolio manager, and ownership by the portfolio manager of Fund shares. 
Portfolio Management
Title
Role with Fund
Service with the Fund Since
Erika K. Maschmeyer, CFA
Head of Domestic Equity and
Director of Domestic Research,
Portfolio Manager and Analyst at
the Investment Manager
Portfolio Manager since 2019
2016
Ms. Maschmeyer has been associated with the Investment Manager as an investment professional since 2016. Ms. Maschmeyer heads the Investment Manager's U.S. equity research efforts and has been a Vice President of the Trust since March 2020. Prior to joining the Investment Manager, Ms. Maschmeyer was a research analyst at an investment advisory firm where she was responsible for U.S. consumer discretionary/staples investments. Ms. Maschmeyer began her investment career in 2001 and earned a B.A. from Denison University and an M.B.A from the University of Chicago.
The rest of the Prospectus and Summary Prospectus remain unchanged.
Effective immediately, all references to John Emerson in the SAI are hereby removed. The rest of the SAI remains unchanged. 
Shareholders should retain this Supplement for future reference.
SUP110_12_011_(02/24)