With passages like

"We have incurred net losses since our founding in 2008, including net losses of $135.4 million , $203.1 million and $187.3 million for the years ended January 31, 2015 , 2016 and 2017 , respectively, and expect to continue to incur net losses for the foreseeable future. As a result, we had an accumulated deficit of $676.0 million at January 31, 2017 . "

in their S-1, seems like it'd be a brave investor who wants involved here.