X0304 4 2012-03-13 0 0001169988 BOINGO WIRELESS INC WIFI 0001287012 ZINSER EDWARD K C/O BOINGO WIRELESS, INC. 10960 WILSHIRE BLVD. SUITE 800 LOS ANGELES CA 90024 0 1 0 0 Chief Financial Officer Common Stock 2012-03-13 4 M 0 18346 1.40 A 18346 D Common Stock 2012-03-13 4 S 0 18346 10.99 D 0 D Employee Stock Option (Right to Buy) 1.40 2012-03-13 4 M 0 18346 1.40 D 2018-02-26 Common Stock 18346 352845 D Subject to continuous service, this option is exercisable with respect to 1/4th of the shares subject to this option on January 28, 2009; exercisable with respect to an addtional 1/36th of the remaining shares subject to this option each month thereafter. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 14, 2011. /s/ Peter Hovenier as Attorney-in-fact for Edward Zinser 2012-03-14