0001193125-13-391142 SC 13G/A 2 20131004 20131004 COLUMBIA ACORN FUND BOINGO WIRELESS INC 0001169988 4899 000000000 DE SC 13G/A 34 005-86647 131135866 10960 WILSHIRE BLVD., SUITE 800 LOS ANGELES CA 90024 310-586-5180 10960 WILSHIRE BLVD., SUITE 800 LOS ANGELES CA 90024 COLUMBIA WANGER ASSET MANAGEMENT LLC 0000908733 0000 043519872 1231 SC 13G/A 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 312-634-9200 227 W MONROE ST STE 3000 CHICAGO IL 60606 COLUMBIA WANGER ASSET MANAGEMENT LP 20040427 LIBERTY WANGER ASSET MANAGEMENT LP 20010220 WANGER ASSET MANAGEMENT LP 19990108 SC 13G/A 1 d607095dsc13ga.htm SC 13G/A EX-99.1 2 d607095dex991.htm EX-99.1