X0306 4/A 2019-01-21 2019-01-24 0 0000911109 MOBILE MINI INC MINI 0001610172 WILLIAMS KELLY M 4646 E VAN BUREN STREET SUITE 400 PHOENIX AZ 85008 0 1 0 0 Executive V.P. & C.O.O. Common 2019-01-22 4 F 0 491 36.03 D 46444 D Amount of traded shares amended due to clerical error. Amount of Securities Beneficially Owned amended due to clerical error. /s/ Christopher J. Miner as Attorney-In-Fact 2019-01-24