Hyunsu Jung

Chief Executive Officer

Mr. Jung has served as the Company’s Chief Executive Officer since January 2026, as the Company’s Interim Chief Executive Officer since September 2025, and as the Company’s Chief Investment Officer and a director since June 2025. Prior to joining the Company, from June 2021 to June 2025, Mr. Jung was a Portfolio Manager at DARMA Capital, an $1B+ asset manager registered with the CFTC and NFA. Previously, Mr. Jung was a Consultant at EY-Parthenon from October 2018 to June 2021, where he drove Finance and Digital Transformation for major enterprise M&A deals. Mr. Jung earned his B.A. from Vassar College in 2018.

David Knox

Chief Financial Officer

David Knox brings with him extensive expertise in scaling capital markets strategies and financial services businesses. He joins Hyperion DeFi from PayPal, where he served as Head of Capital Markets and Head of Finance for Global Credit and Financial Services. In his dual role at PayPal, he led the profitable expansion of the company’s lending segments under a “balance sheet light” strategic imperative and managed core FP&A responsibilities with rigorous governance and reporting across the PayPal and Venmo global financial services platforms.

Earlier in his career, Mr. Knox was Director at Cantor Fitzgerald, where he provided capital markets structuring and advisory services across mortgage-backed and asset-backed finance transactions. He also held prior roles in lending and capital markets at SoFi, Hudson Advisors, and the Royal Bank of Scotland. Mr. Knox holds a bachelor’s degree from the University of Connecticut and is an alumnus of the Harvard Business School.

Robert Rubenstein

General Counsel and Secretary

Rob brings nearly three decades of experience leading legal, compliance, and business development functions for multi-national public and private companies. Over his career, he has served as General Counsel and in senior executive roles. Prior to joining Hyperion DeFi, Rob held senior executive leadership roles at Las Vegas Sands where he managed that company's global expansion, oversaw global regulatory compliance programs, and directed significant litigation matters in U.S. and international jurisdictions.  Rob is a graduate of Washington University in St. Louis and Case Western Reserve University.