Mark Rosenthal is Chief Revenue Officer of Kastle Systems, the leading tech-enabled real estate operating platform providing services to commercial real estate, enterprises, multifamily, and retail. At Kastle, Mark is responsible for revenue strategy and growth across all core business lines. He is also focused on developing a sales success culture that attracts, develops and rewards top talent. He is a member of Kastle’s executive leadership team. Prior to Kastle, Mark was Chief Revenue & Operating Officer at HqO, growing the company from $194k to $35M in annual recurring revenue and leading all commercial and GTM functions. Mark was the Head of Google Display Advertising Sales for North America, leading a team which helps Google's largest advertisers leverage Machine Learning and Automation of advertising to achieve transformational business results. Earlier at Google, Mark was Head of Industry, Health Services where he led a team which provided digital marketing strategy consultation for many top U.S. companies in the consumer health and wellness industry. He is a graduate of The George Washington University. He and his wife, Rachel work closely with charities including Boston Children's Hospital and Dana-Farber Cancer Institute. Mark lives in Sudbury, MA with his wife and three children.