Supplement dated February 28, 2023
to the Prospectus and Summary Prospectus of the following
Fund:
Fund
|
Prospectus and
Summary Prospectus Dated |
Columbia
Acorn Trust |
|
Columbia
Thermostat Fund |
5/1/2022
|
Effective immediately, the
portfolio manager information under the heading “Fund Management” in the Summary Prospectus and the “Summary of the Fund” section of the Prospectus, is hereby superseded and replaced with the following: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 |
Alex
M. Rivas |
|
Portfolio
Manager and Assistant Vice President of the Investment Manager |
|
Portfolio
Manager since May 2022 |
|
2018
|
Corey
Lorenzen, CFA |
|
Associate
Portfolio Manager of Columbia Management and Vice President of the Investment Manager |
|
Portfolio
Manager since February 2023 |
|
February
2023 |
The portfolio manager
information under the heading “Primary Service Provider Contracts — Portfolio Managers” in the “More Information About the Fund" section of the Prospectus is hereby superseded and replaced with the
following:
Portfolio Managers
Information about the portfolio managers primarily responsible
for overseeing the Fund’s investments is shown below. The SAI provides additional information about the portfolio managers, including information relating to compensation, other accounts managed by the portfolio managers, and ownership by the
portfolio managers of Fund shares.
Portfolio
Management |
|
Title
|
|
Role
with Fund |
|
Service
with the Fund Since |
Alex
M. Rivas |
|
Portfolio
Manager and Assistant Vice President of the Investment Manager |
|
Portfolio
Manager since May 2022 |
|
2018
|
Corey
Lorenzen, CFA |
|
Associate
Portfolio Manager of Columbia Management and Vice President of the Investment Manager |
|
Portfolio
Manager since February 2023 |
|
February
2023 |
Mr. Rivas joined Columbia Management, an affiliate of the Investment Manager in 2017. Mr. Rivas has served as Assistant Vice President of the Investment Manager since February 2018. Prior to joining Columbia Management, Mr. Rivas
was a trading specialist with Blackrock Advisors, LLC. Mr. Rivas began his investment career in 2009 and earned a B.S. from Georgia Institute of Technology and a Master’s degree in Finance from Princeton University.
Mr. Lorenzen joined Columbia
Management, an affiliate of the Investment Manager in 2012. Mr. Lorenzen began his investment career in 2012 and earned a B.S. from the University of Wisconsin - Madison and an M.S. from the University of Wisconsin - Milwaukee.
Shareholders should retain this Supplement for future
reference.