X0306 4 2021-04-30 0 0001169988 BOINGO WIRELESS, INC. WIFI 0001570670 Callahan Dawn C/O BOINGO WIRELESS INC. 10960 WILSHIRE BLVD. 23RD FLOOR LOS ANGELES CA 90024 0 1 0 0 Chief Marketing Officer Common Stock 2021-04-30 4 M 0 7993 .82 A 11782 D Common Stock 2021-05-01 4 M 0 581 0 A 12363 D Common Stock 2021-05-01 4 F 0 304 13.96 D 12059 D Common Stock 2021-05-01 4 M 0 1132 0 A 13191 D Common Stock 2021-05-01 4 F 0 592 13.96 D 12599 D Common Stock 2021-05-01 4 M 0 1592 0 A 14191 D Common Stock 2021-05-01 4 F 0 833 13.96 D 13358 D Employee Stock Option (Right to Buy) .82 2021-04-30 4 M 0 7993 .83 D 2021-05-03 Common Stock 7993 0 D Restricted Stock Units 2021-05-01 4 M 0 581 0 D Common Stock 581 1743 D Restricted Stock Units 2021-05-01 4 M 0 1132 0 D Common Stock 1132 7925 D Restricted Stock Units 2021-05-01 4 M 0 1592 0 D Common Stock 1592 17508 D This transaction reflects the cash exercise of Reporting Person's employee stock option. The shares acquired represent the vesting and automatic settlement of 581 of Reporting Person's performance stock units which vested on May 1, 2021, but were settled on May 3, 2021. Represents shares withheld in connection with the payment of taxes due of vesting of restricted shares. The shares acquired represent the vesting and automatic settlement of 1132 of Reporting Person's stock units which vested on May 1, 2021, but were settled on May 3, 2021. The shares acquired represent the vesting and automatic settlement of 1592 of Reporting Person's stock units which vested on May 1, 2021, but were settled on May 3, 2021. Subject to continuous service, this option is exercisable with respect to 1/4th of the shares subject to this option on 5/3/12; and with respect to an additional 1/36th of the remaining shares subject to this option each month thereafter; as of the transaction date this option is fully vested and exercisable. Each restricted stock unit represents a contingent right to receive one share of Boingo Wireless, Inc. common stock. The restricted stock units will vest in a series of twelve equal quarterly installments beginning on February 1, 2019, so that the restricted stock units will become fully vested on February 1, 2022. The restricted stock units will be settled in shares of common stock that will be delivered to the Reporting Person shortly after each vesting date. The restricted stock units will vest in a series of twelve successive quarterly installments beginning on February 1, 2020, so that the restricted stock units will become fully vested on February 1, 2023. The restricted stock units will be settled in shares of common stock that will be delivered to the Reporting Person shortly after each vesting date. The restricted stock units will vest in a series of twelve successive quarterly installments beginning on February 1, 2021, so that the restricted stock units will become fully vested on February 1, 2024. The restricted stock units will be settled in shares of common stock that will be delivered to the Reporting Person shortly after each vesting date. /s/ Efren Medina as Attorney-in-Fact for Dawn Callahan 2021-05-05