CoStar Group Announces Leadership Change: Robin Rossmann Promoted to Chief Financial Officer

Rossmann, who currently serves as CoStar Group's Managing Director for Europe, will now oversee the global finance organization, focusing on the company’s financial and operational performance, capital allocation, financial planning, and investor relations. His promotion is seen as a pivotal step in CoStar Group's commitment to driving margin expansion and achieving profitable growth.

Andy Florance, Founder and CEO of CoStar Group, expressed confidence in Rossmann's capabilities, stating, "Robin is a rare executive who combines deep financial expertise with proven operating leadership." He commended Rossmann for his outstanding performance in improving margins across CoStar's European business, including a noteworthy reduction of approximately $51 million in costs. This achievement reflects Rossmann's ability to streamline operations while simultaneously delivering double-digit revenue growth.

Since joining STR in 2016 and later becoming part of CoStar Group following its acquisition of STR in 2019, Rossmann has played a vital role in expanding the company's international footprint. His leadership has been instrumental in launching CoStar products across global markets and executing strategic acquisitions. Over the past decade, he has exhibited exceptional skill in scaling operations and enhancing the company's competitive position in the industry.

In his new role, Rossmann aims to implement disciplined capital allocation strategies, improve operational efficiency, and support the company's ongoing efforts to generate long-term shareholder value. He expressed enthusiasm about his new responsibilities, stating, "I am honored to assume the role of Chief Financial Officer at such an exciting point in the Company's evolution."

Christian Lown's departure is amicable, with no indications of disagreement regarding the company's operations or policies. Lown's contributions during his tenure have been acknowledged by Florance, who thanked him on behalf of the Board of Directors and the entire CoStar Group team. Lown's leadership has helped the company navigate through various market challenges, and his future endeavors are anticipated with best wishes from the organization.

CoStar Group continues to solidify its reputation as a global leader in commercial real estate information and analytics, boasting a diverse portfolio of brands including CoStar, LoopNet, Apartments.com, and STR. The company reported an impressive 131 million average monthly unique visitors across its platforms in the first quarter of 2026, reflecting its strong engagement in the real estate technology space.

With Rossmann at the financial helm, CoStar Group is poised to sharpen its focus on margin expansion and profitability, ensuring that it remains at the forefront of the real estate technology industry. The leadership change is viewed as a strategic move to not only enhance operational performance but also to drive long-term value for shareholders as the company continues to innovate and expand.

As CoStar Group embarks on this new chapter under Robin Rossmann's leadership as CFO, the market will be keenly observing how the company adapts to ongoing challenges in the real estate sector. With a seasoned executive like Rossmann at the forefront of its financial strategy, CoStar Group is well-positioned to navigate the complexities of the market and continue its trajectory of growth and innovation.