Jack Darby Named CEO of Circa Scientific

July 31, 2026—Circa Scientific, Inc., a developer of access technologies for structural heart and electrophysiology procedures, announced the appointment of Jack Darby as Chief Executive Officer.

Darby succeeds Lee Geist, who will transition to Chief Operating Officer while continuing to serve on the company’s Board of Directors, noted Circa.

The company stated that Darby joins Circa after the recent FDA clearances of the CrossWise RF transseptal access system and the PeriCross epicardial access kit. Together with Circa’s esophageal temperature monitoring technology, these devices form the foundation of the company’s cardiovascular access portfolio.

According to Circa, the appointment of Darby reflects the company’s commitment to accelerating commercial execution of its portfolio.

As summarized in the press release, Darby brings more than 30 years of leadership experience in the global cardiovascular medical device industry. Most recently, he served as Vice President of Medtronic’s Cardiovascular Commercial Office and previously as President and Chief Executive Officer of Svelte Medical Systems. Earlier, he held senior leadership positions with Medrad Interventional, AGA Medical, and Cordis.

“Jack is the right leader to guide Circa through its next stage of growth,” commented Doug Wall, Chairman of the Board of the company, in the press release. “His combination of commercial leadership, operational expertise, and deep cardiovascular experience makes him uniquely qualified to accelerate physician adoption of our technologies, expand our market presence, and build upon the strong foundation the company has established.”

Wall continued, “As Circa expands its cardiovascular access portfolio, Jack’s experience scaling organizations and creating shareholder value will be instrumental to our continued success.”