<SEC-DOCUMENT>0001193125-20-039737-index.html : 20200218
<SEC-HEADER>0001193125-20-039737.hdr.sgml : 20200218
<ACCEPTANCE-DATETIME>20200218090738
ACCESSION NUMBER:		0001193125-20-039737
CONFORMED SUBMISSION TYPE:	425
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200218
DATE AS OF CHANGE:		20200218

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COLUMBIA FUNDS SERIES TRUST
		CENTRAL INDEX KEY:			0001097519
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		425
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-09645
		FILM NUMBER:		20623751

	BUSINESS ADDRESS:	
		STREET 1:		225 FRANKLIN STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		800-345-6611

	MAIL ADDRESS:	
		STREET 1:		225 FRANKLIN STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONS FUNDS TRUST
		DATE OF NAME CHANGE:	19991022

FILED BY:		

	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:		425

	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
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<ACQUIRING-DATA>
CENTRAL INDEX KEY:			0000002110
<SERIES>
<SERIES-ID>S000009188
<SERIES-NAME>Columbia Acorn International Select
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000024970
<CLASS-CONTRACT-NAME>Columbia Acorn International Select Class A
<CLASS-CONTRACT-TICKER-SYMBOL>LAFAX
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<TARGET-DATA>
CENTRAL INDEX KEY:			0001097519
<SERIES>
<SERIES-ID>S000010803
<SERIES-NAME>Columbia Select International Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000029899
<CLASS-CONTRACT-NAME>Columbia Select International Equity Fund Class A
<CLASS-CONTRACT-TICKER-SYMBOL>NIIAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000029902
<CLASS-CONTRACT-NAME>Columbia Select International Equity Fund Class R
<CLASS-CONTRACT-TICKER-SYMBOL>CIERX
</CLASS-CONTRACT>
</SERIES>
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CENTRAL INDEX KEY:			0000002110
<SERIES>
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<SERIES-NAME>Columbia Acorn International Select
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<CLASS-CONTRACT-ID>C000024972
<CLASS-CONTRACT-NAME>Columbia Acorn International Select Class C
<CLASS-CONTRACT-TICKER-SYMBOL>LFFCX
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CENTRAL INDEX KEY:			0001097519
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<SERIES-NAME>Columbia Select International Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000029901
<CLASS-CONTRACT-NAME>Columbia Select International Equity Fund Class C
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<SERIES-NAME>Columbia Acorn International Select
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000024973
<CLASS-CONTRACT-NAME>Columbia Acorn International Select Institutional Class
<CLASS-CONTRACT-TICKER-SYMBOL>ACFFX
</CLASS-CONTRACT>
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<TARGET-DATA>
CENTRAL INDEX KEY:			0001097519
<SERIES>
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000029903
<CLASS-CONTRACT-NAME>Columbia Select International Equity Fund Institutional Class
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<ACQUIRING-DATA>
CENTRAL INDEX KEY:			0000002110
<SERIES>
<SERIES-ID>S000009188
<SERIES-NAME>Columbia Acorn International Select
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000122746
<CLASS-CONTRACT-NAME>Columbia Acorn International Select Institutional 2 Class
<CLASS-CONTRACT-TICKER-SYMBOL>CRIRX
</CLASS-CONTRACT>
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CENTRAL INDEX KEY:			0001097519
<SERIES>
<SERIES-ID>S000010803
<SERIES-NAME>Columbia Select International Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000122591
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CENTRAL INDEX KEY:			0000002110
<SERIES>
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<CLASS-CONTRACT>
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<CLASS-CONTRACT-NAME>Columbia Acorn International Select Institutional 3 Class
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CENTRAL INDEX KEY:			0001097519
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<CLASS-CONTRACT>
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<ACQUIRING-DATA>
CENTRAL INDEX KEY:			0000002110
<SERIES>
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<SERIES-NAME>Columbia Acorn International Select
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000122748
<CLASS-CONTRACT-NAME>Columbia Acorn International Select Advisor Class
<CLASS-CONTRACT-TICKER-SYMBOL>CILRX
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CENTRAL INDEX KEY:			0001097519
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<CLASS-CONTRACT-TICKER-SYMBOL>CQYRX
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<DOCUMENT>
<TYPE>425
<SEQUENCE>1
<FILENAME>d882535d425.htm
<DESCRIPTION>COLUMBIA ACORN TRUST
<TEXT>
Document 1 - file: d882535d425.htm

</DOCUMENT>
</SEC-DOCUMENT>