Hipmunk Co-Founders Spurned by SAP Concur in Attempt to Buy Back the Companyhttps://skift.com/2020/01/14/hipmunk-co-founders-spurned-by-sap-concur-in-attempt-to-buy-back-the-company/ by chkuendig • 7 years ago 41 4 7 years agoSKskift.com