Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000002110 | |||
| Series S000009184 | Columbia Acorn Fund | ||
| Class/Contract C000024954 | Columbia Acorn Fund Class A | LACAX | |
| Class/Contract C000024956 | Columbia Acorn Fund Class C | LIACX | |
| Class/Contract C000024957 | Columbia Acorn Fund Institutional Class | ACRNX | |
| Class/Contract C000122736 | Columbia Acorn Fund Institutional 2 Class | CRBRX | |
| Class/Contract C000122737 | Columbia Acorn Fund Institutional 3 Class | CRBYX | |
| Class/Contract C000251059 | Columbia Acorn Fund Class S | ACRSX | |
| Status | Name | Ticker Symbol | |
| CIK 0000002110 | |||
| Series S000009185 | Columbia Acorn International | ||
| Class/Contract C000024958 | Columbia Acorn International Class A | LAIAX | |
| Class/Contract C000024961 | Columbia Acorn International Institutional Class | ACINX | |
| Class/Contract C000097733 | Columbia Acorn International Institutional 2 Class | CAIRX | |
| Class/Contract C000122739 | Columbia Acorn International Institutional 3 Class | CCYIX | |
| Class/Contract C000251060 | Columbia Acorn International Class S | CCIDX | |
| Status | Name | Ticker Symbol | |
| CIK 0000002110 | |||
| Series S000009188 | Columbia Acorn International Select | ||
| Class/Contract C000024970 | Columbia Acorn International Select Class A | LAFAX | |
| Class/Contract C000024973 | Columbia Acorn International Select Institutional Class | ACFFX | |
| Class/Contract C000122746 | Columbia Acorn International Select Institutional 2 Class | CRIRX | |
| Class/Contract C000122747 | Columbia Acorn International Select Institutional 3 Class | CSIRX | |
| Class/Contract C000251061 | Columbia Acorn International Select Class S | ACFEX | |
| Status | Name | Ticker Symbol | |
| CIK 0000002110 | |||
| Series S000009189 | Columbia Thermostat Fund | ||
| Class/Contract C000024974 | Columbia Thermostat Fund Class A | CTFAX | |
| Class/Contract C000024976 | Columbia Thermostat Fund Class C | CTFDX | |
| Class/Contract C000024977 | Columbia Thermostat Fund Institutional Class | COTZX | |
| Class/Contract C000122750 | Columbia Thermostat Fund Institutional 2 Class | CQTRX | |
| Class/Contract C000122751 | Columbia Thermostat Fund Institutional 3 Class | CYYYX | |
| Class/Contract C000251062 | Columbia Thermostat Class S | COTDX | |
| Status | Name | Ticker Symbol | |
| CIK 0000002110 | |||
| Series S000033621 | Columbia Acorn European Fund | ||
| Class/Contract C000103324 | Columbia Acorn European Fund Class A | CAEAX | |
| Class/Contract C000103327 | Columbia Acorn European Fund Institutional Class | CAEZX | |
EIN.: 362692100 | State of Incorp.: MA | Fiscal Year End: 1231
Type: 497 | Act: 33 | File No.: 002-34223 | Film No.: 25696267