CIRCA Scientific Names Jack Darby CEO to Drive Commercial Expansion
CIRCA Scientific appointed Jack Darby as its new Chief Executive Officer to accelerate commercial expansion of its cardiovascular access technology portfolio. Lee Geist transitions to Chief Operating Officer.
ENGLEWOOD, Colo. – July 24, 2026 – CIRCA Scientific, Inc., a developer of cardiovascular medical devices, announced the appointment of Jack Darby as its Chief Executive Officer. Darby succeeds Lee Geist, who will transition to the role of Chief Operating Officer while remaining on the Company's Board of Directors.
Darby joins CIRCA Scientific as the company enters a new phase of commercial growth, following recent U.S. Food and Drug Administration (FDA) clearances for its CrossWise™ RF Transseptal Access System and PeriCross™ Epicardial Access Kit. These products, combined with CIRCA's established expertise in esophageal temperature monitoring, form the foundation of a differentiated portfolio for cardiovascular access technologies.
The company aims to increase physician adoption of its current offerings and advance further innovations that simplify cardiovascular access and improve procedural performance. Darby brings over 30 years of leadership experience in the global cardiovascular medical device industry, with a proven track record in commercializing innovative technologies and driving strategic growth.
CIRCA Scientific is positioned to expand physician usage of its current products and develop new solutions designed to enhance safety and performance in electrophysiology and structural heart procedures. Darby's appointment is expected to accelerate the company's commercial execution and create long-term value for stakeholders.