Leasing platform Hightower has revealed commercial real estate services firm Newmark Grubb Knight Frank is among its backers.

Hightower, the US-based owner of a leasing management platform for commercial real estate, revealed yesterday it has received an undisclosed amount of funding from commercial real estate services firm Newmark Grubb Knight Frank.

The firm was joined by Bill Rudin, CEO of commercial and residential real estate company Rudin Management; Aaron Levie, chief executive of cloud collaboration service Box; and Barry Sternlicht, CEO of investment firm Starwood Capital.

Founded in 2013, Hightower operates a leasing management platform that facilitates the…