HOUSTON--(BUSINESS WIRE)--PROS® (NYSE: PRO), a big data software company, today announced the appointment of Leslie J. Rechan to its board of directors. Rechan, who was elected by PROS shareholders at its annual shareholder meeting on Thursday, May 21, joins the board as an independent director for a three-year term effective immediately. Rechan brings to the board a broad range of software experience from some of the world’s leading technology organizations. Most recently he served as general