0001193125-04-022635 SC 13G/A 1 20040213 COLUMBIA ACORN TRUST WAM ACQUISITION GP, INC. ACTUATE CORP 0001062478 7372 943193197 DE 1231 SC 13G/A 34 005-54539 04596644 701 GATEWAY BLVD SUITE SOUTH SAN FRANCISCO CA 94080 6504252300 701 GATEWAY BLVD SUITE SOUTH SAN FRANCISCO CA 94080 ACTUATE SOFTWARE CORP 19980527 LIBERTY WANGER ASSET MANAGEMENT LP 0000908733 0000 363820584 DE 1231 SC 13G/A 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 3126349230 227 W MONROE ST STE 3000 CHICAGO IL 60606 WANGER ASSET MANAGEMENT LP 19990108 SC 13G/A 1 dsc13ga.txt AMENDMENT NO. 1 TO SCHEDULE 13G