Derivatives and securities exchange network Cboe Global Markets, Inc today announced the planned appointments of Scott Johnston as Executive Vice President, Chief Operating Officer, and Heidi Fischer as Executive Vice President, Global Head of Equities and Spot Markets.

Johnston will take over chief operating duties from Chris Isaacson, Executive Vice President and Chief Operating Officer, who is retiring from his role effective March 6, 2026. Fischer will assume oversight of Cboe’s global cash equities and spot markets, which Isaacson also oversaw. Isaacson will continue to serve as an advisor to Cboe through the end of 2026 to help ensure a seamless transition.

Alex Dalley, Cboe’s Head of European Equities, has been promoted to Senior Vice President and will oversee Cboe’s European Equities business, subject to regulatory approval. Natan Tiefenbrun, President, Europe and Global Head of Cash Equities, will depart the company to pursue new opportunities.

Jon Weinberg, Cboe’s Global Head of FX, will expand his leadership role and will now oversee Cboe’s global FX and off-exchange trading business lines as SVP, Global Head of FX and Off-Exchange Trading. Weinberg and Fischer will drive strategy and vision for Cboe’s approach to operating off-exchange markets across asset classes, positioning the company to capitalize on new opportunities and evolving market trends.

To further drive its globalization strategy, Cboe is introducing a regional office leadership structure: Tim Lipscomb, EVP and Chief Technology Officer, will oversee Kansas City; Fischer will head New York; Dalley and Weinberg will co-lead London; and Vikesh Patel, Global Head of Clearing and President, Cboe Clear Europe, will lead Amsterdam.

As Chief Operating Officer, Johnston will oversee the day-to-day operations of Cboe’s global trading platforms, market operations, infrastructure, and clearing teams. He will work closely with Tim Lipscomb, EVP, Chief Technology Officer, who has been with Cboe for six years, to drive continued innovation, strengthen Cboe’s technology and operations capabilities, and support the company’s long-term growth. Johnston brings more than 40 years of industry experience to the role, including senior leadership positions at Akuna Capital, Hudson River Trading, Citadel, Tower Research Capital, CME Group, and UBS.

As Executive Vice President, Global Head of Equities and Spot Markets, Fischer will oversee strategy, product development, and client engagement with an emphasis on delivering comprehensive on-exchange and off-exchange solutions for clients. Fischer will join Cboe from TMX Group, where she was Managing Director and President, TMX Alpha US, and brings over 25 years of industry experience with previous leadership roles at Deutsche Bank, Instinet, and Tucker Alan.

Johnston will join Cboe on February 17, 2026, and will be based at Cboe’s global headquarters in Chicago. Fischer will join in the coming months and will be based in Cboe’s New York office. They will join the Cboe Executive Leadership Team and will report to Donohue.