CoStar names Robin Rossmann CFO, succeeding Christian Lown

CoStar Group has announced that Robin Rossmann will assume the role of Chief Financial Officer, effective July 31, 2026. Rossmann, currently the managing director for Europe, will succeed Christian Lown, who is departing the company to pursue an opportunity outside its industry. Lown's departure is amicable and not related to any operational disagreements.

In his new role, Rossmann will lead CoStar's global finance organization, reporting to founder and CEO Andy Florance. During his two years leading CoStar's European operations, Rossmann reduced costs by approximately $51 million, representing about 25% of the region's cost structure, while also achieving double-digit revenue growth and launching CoStar in France.

Rossmann joined STR in 2016 and became part of CoStar Group following its acquisition of STR in 2019. CEO Andy Florance praised Rossmann's financial expertise and operational leadership. Florance also extended his gratitude to Lown for his service.