0001193125-12-000538.txt : 20120103 0001193125-12-000538.hdr.sgml : 20120102 20120103134333 ACCESSION NUMBER: 0001193125-12-000538 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20120103 DATE AS OF CHANGE: 20120103 EFFECTIVENESS DATE: 20120103 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: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-34223 FILM NUMBER: 12501183 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 0000002110 S000009184 Columbia Acorn Fund C000024954 Columbia Acorn Fund Class A LACAX C000024955 Columbia Acorn Fund Class B LACBX C000024956 Columbia Acorn Fund Class C LIACX C000024957 Columbia Acorn Fund Class Z ACRNX C000094632 Columbia Acorn Fund Class I CANIX 0000002110 S000009185 Columbia Acorn International C000024958 Columbia Acorn International Class A LAIAX C000024959 Columbia Acorn International Class B LIABX C000024960 Columbia Acorn International Class C LAICX C000024961 Columbia Acorn International Class Z ACINX C000094633 Columbia Acorn International Class I CARIX C000097732 Columbia Acorn International Class R CACRX C000097733 Columbia Acorn International Class R5 0000002110 S000009186 Columbia Acorn USA C000024962 Columbia Acorn USA Class A LAUAX C000024963 Columbia Acorn USA Class B LAUBX C000024964 Columbia Acorn USA Class C LAUCX C000024965 Columbia Acorn USA Class Z AUSAX C000094634 Columbia Acorn USA Class I CAUIX 0000002110 S000009187 Columbia Acorn Select C000024966 Columbia Acorn Select Class A LTFAX C000024967 Columbia Acorn Select Class B LTFBX C000024968 Columbia Acorn Select Class C LTFCX C000024969 Columbia Acorn Select Class Z ACTWX C000094635 Columbia Acorn Select Class I CACIX 0000002110 S000009188 Columbia Acorn International Select C000024970 Columbia Acorn International Select Class A LAFAX C000024971 Columbia Acorn International Select Class B LFFBX C000024972 Columbia Acorn International Select Class C LFFCX C000024973 Columbia Acorn International Select Class Z ACFFX C000094636 Columbia Acorn International Select Class I CRSIX 0000002110 S000009189 Columbia Thermostat Fund C000024974 Columbia Thermostat Fund Class A CTFAX C000024975 Columbia Thermostat Fund Class B CTFBX C000024976 Columbia Thermostat Fund Class C CTFDX C000024977 Columbia Thermostat Fund Class Z COTZX 0000002110 S000033621 Columbia Acorn European Fund C000103324 Columbia Acorn European Fund Class A CAEAX C000103325 Columbia Acorn European Fund Class C CAECX C000103326 Columbia Acorn European Fund Class I CAFIX C000103327 Columbia Acorn European Fund Class Z CAEZX 0000002110 S000033622 Columbia Acorn Emerging Markets Fund C000103328 Columbia Acorn Emerging Markets Fund Class A CAGAX C000103329 Columbia Acorn Emerging Markets Fund Class C CGMCX C000103330 Columbia Acorn Emerging Markets Fund Class I CATIX C000103331 Columbia Acorn Emerging Markets Fund Class Z CEFZX 497 1 d277132d497.htm COLUMBIA ACORN TRUST Columbia Acorn Trust

COLUMBIA ACORN TRUST

Supplement to the Statement of Additional Information (“SAI”)

dated May 1, 2011, as supplemented

Columbia Acorn® Fund

Columbia Acorn International®

Columbia Acorn International SelectSM

Columbia Acorn SelectSM

Columbia Acorn USA®

Columbia Thermostat FundSM

Supplement to the SAI dated August 19, 2011

Columbia Acorn® Emerging Markets Fund

Columbia Acorn® European Fund

(each, a “Fund” and collectively, the “Funds”)

Supplement dated January 3, 2012 

The following is added as a new sub-section within the section of each SAI entitled, TAXATION, immediately following the existing sub-section entitled, Sales and Exchanges of Fund Shares, effective as of the date of this Supplement:

Cost Basis Reporting

Historically, each Fund has been required to report to shareholders and the IRS only gross proceeds on sales, redemptions or exchanges of Fund shares. The Funds are subject to new reporting requirements for shares purchased, including shares purchased through dividend reinvestment, on or after January 1, 2012 and sold, redeemed or exchanged after that date. IRS regulations now generally require the Funds (or the shareholder’s Selling or Servicing Agent, if Fund shares are held through a Selling or Servicing Agent) to provide the shareholders and the IRS, upon the sale, redemption or exchange of Fund shares, with cost basis information about those shares as well as information about whether any gain or loss is short- or long-term and whether any loss is disallowed under the “wash sale” rules. This reporting is not required for Fund shares held in a retirement or other tax-advantaged account. With respect to Fund shares in accounts held directly with a Fund, each Fund will calculate and report cost basis using the Fund’s default method of average cost, unless the shareholder instructs the Fund to use a different calculation method. A Fund will not report cost basis for shares whose cost basis is uncertain or unknown to the Fund. Please visit the Funds’ website at www.columbiamanagement.com or contact the Funds at 800.345.6611 for more information regarding average cost basis reporting and other available methods for cost basis reporting and how to select or change a particular method or to choose specific shares to sell, redeem or exchange. If a shareholder retains Fund shares through a Selling or Servicing Agent, he or she should contact their Selling or Servicing Agent to learn about the Fund’s cost basis reporting default method and the reporting elections available to his or her account. The Funds do not recommend any particular method of determining cost basis. The shareholder should consult a tax advisor to determine which available cost basis method is best. When completing U.S. federal and state income tax returns, shareholders should carefully review the cost basis and other information provided and make any additional basis, holding period or other adjustments that may be required.

Shareholders should retain this Supplement for future reference.

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