Hightower, an online platform for the commercial leasing industry, today announced a $6.5 million Series A round of financing led by existing investors Bessemer Venture Partners and Thrive Capital. Previous investors, including RRE Ventures, Red Swan Ventures, David Tisch, Lee Linden and Brandon Shorenstein, also participated in the round. The funding comes just eight months after Hightower’s $2.1 million seed round in December 2013.