Halstatt Appoints Robert Thomas to Board of Directors

Naples, Fla. – May 6, 2026 – Halstatt, a family-owned investment firm headquartered in Naples, Fla., is pleased to announce the appointment of Robert Thomas to its Board of Directors. In this role, Thomas will provide strategic guidance to the firm, drawing on his extensive background in managing complex portfolios and institutional capital.

“Robert brings a thoughtful and highly disciplined approach to investing, along with a breadth of experience across institutional portfolios that will be incredibly valuable to Halstatt,” said Katie Sproul, chief executive officer of Halstatt. “His perspective, shaped by decades of leadership in both family office and investment management settings, aligns well with how we think about capital allocation and long-term value creation. We are pleased to welcome him to the Board.”

Thomas currently serves as chief investment officer of WestRiver Group, where he oversees the firm’s investment strategy and portfolio. Prior to this role, he spent 15 years as chief investment officer for the George Kaiser Family Foundation, where he was responsible for the financial administration and management of its $5 billion investment portfolio. Earlier in his career, Thomas spent a decade with the Bill Gates Investment Office, ultimately overseeing all externally managed fund relationships.

In addition to his professional experience, Thomas is actively engaged in academic and civic organizations. He serves on the board of advisors for the Financial Economics Institute at Claremont McKenna College and is a trustee of The University of Tulsa. He is also president of the Board of Directors of Undercroft Montessori School in Tulsa, Oklahoma, and serves as chairman of the Board for City Year Tulsa. Thomas earned a Bachelor of Arts in Economics, magna cum laude, from Claremont McKenna College. 

About Halstatt

Halstatt is a family-owned investment firm headquartered in Naples, Fla. Katie Sproul, Halstatt’s CEO, is the great granddaughter of Barron Gift Collier, the founder of Collier County, Fla. The Sproul family has been instrumental in the development of Florida for more than half a century. Halstatt and its network of affiliated firms manage capital across a broad range of asset classes as well as that of a number of family office and institutional investors. www.halstatt.com