40 UNDER 40; Greg Schwartz
Greg Schwartz, 38 Co-founder and chief operating officer, StockX
If at first you don't hit a home run, swing for the fences again. That's the cliche, but it worked for Greg Schwartz.
Schwartz founded UpTo Inc., which in 2012 launched an interactive calendar app for iPhone and Android that allowed friends, family and co-workers to share their schedules and make group plans for such things as sporting events, concerts or where to meet for drinks or dinner.
Funded by Dan Gilbert's...