-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, GooFJriFOCeTXy6mTym4wrpIyiLUrRv+r4oQUV+s0xnJJZqpZNvvXznJKVP6BUC2 7gt70Va0wMSd6pBrVvcX8A== 0000891804-04-002805.txt : 20041207 0000891804-04-002805.hdr.sgml : 20041207 20041207150540 ACCESSION NUMBER: 0000891804-04-002805 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20041207 DATE AS OF CHANGE: 20041207 EFFECTIVENESS DATE: 20041207 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: 041188381 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 497 1 file002.txt COLUMBIA THERMOSTAT FUND COLUMBIA THERMOSTAT FUND Supplement dated December 7, 2004 to Prospectuses dated May 1, 2004 Effective immediately, the first paragraph under the heading "Managing the Fund--Portfolio Managers" is deleted in its entirety and replaced by the following paragraph: "Columbia WAM uses a supervisory committee to review on an infrequent basis the structure and allocation ranges of Thermostat and to make any changes considered appropriate. The members of the committee are Ralph Wanger and Charles P. McQuaid." 143-36/817T-1204 -----END PRIVACY-ENHANCED MESSAGE-----