CoStar Group names Robin Rossmann as CFO, effective July 2026

CoStar Group (NASDAQ: CSGP) announced the appointment of Robin Rossmann as Chief Financial Officer, effective July 31, 2026. Rossmann succeeds Christian Lown, who is stepping down to pursue an opportunity outside the company's industry.

Rossmann currently serves as CoStar Group's Managing Director, Europe, and will report to Andy Florance, founder and Chief Executive Officer. In his new role, he will oversee the company's global finance organization, including financial and operational performance, capital allocation, financial planning, and investor engagement.

According to the company, over the past two years Rossmann reduced CoStar Group's European cost structure by approximately 25%, eliminating roughly $51 million in costs, while delivering double-digit revenue growth and launching CoStar in France.

Rossmann joined STR in 2016, leading its businesses across EMEA, Asia Pacific, and Latin America. He became part of CoStar Group through the company's acquisition of STR in 2019. Prior to STR, he spent 13 years at Deloitte as a Senior Director and Chartered Accountant, advising real estate and hospitality companies across the United States, the United Kingdom, and other international markets.

"Robin is a rare executive who combines deep financial expertise with proven operating leadership and a demonstrated ability to dramatically reduce costs while accelerating growth," Florance said in a statement.

Lown will step down as Chief Financial Officer on July 31, 2026. The company stated his departure was not the result of any disagreement relating to the company's operations, policies, or practices.

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