<SEC-DOCUMENT>0001193125-23-165948-index.html : 20230613 <SEC-HEADER>0001193125-23-165948.hdr.sgml : 20230613 <ACCEPTANCE-DATETIME>20230613143756 ACCESSION NUMBER: 0001193125-23-165948 CONFORMED SUBMISSION TYPE: POS EX PUBLIC DOCUMENT COUNT: 5 FILED AS OF DATE: 20230613 DATE AS OF CHANGE: 20230613 EFFECTIVENESS DATE: 20230613 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: POS EX SEC ACT: 1933 Act SEC FILE NUMBER: 333-269553 FILM NUMBER: 231011001 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 </SEC-HEADER> <DOCUMENT> <TYPE>POS EX <SEQUENCE>1 <FILENAME>d498620dposex.htm <DESCRIPTION>COLUMBIA ACORN TRUST <TEXT> Document 1 - file: d498620dposex.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.(12) <SEQUENCE>2 <FILENAME>d498620dex9912.htm <DESCRIPTION>OPINION AND CONSENT <TEXT> Document 2 - file: d498620dex9912.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.(13)(H) <SEQUENCE>3 <FILENAME>d498620dex9913h.htm <DESCRIPTION>FEE WAIVER/EXPENSE REIMBURSEMENT AGREEMENT <TEXT> Document 3 - file: d498620dex9913h.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g498620dsp0011.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g498620dsp0011.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g498620g0607215012382.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g498620g0607215012382.jpg
</DOCUMENT> </SEC-DOCUMENT>