X0708 D LIVE 0001509745 LEAP THERAPEUTICS, INC. 47 THORNDIKE STREET SUITE B1-1 CAMBRIDGE MA MASSACHUSETTS 02142 617 252 4343 DELAWARE None Dekkun Corp Corporation true Christine Granfield 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Executive Officer Ms. Granfield is the Vice President, Head of Regulatory Affairs and Quality of the Issuer. Douglas E. Onsi 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Executive Officer Director Mr. Onsi is the Chief Executive Officer and President of the Issuer. Christopher K. Mirabelli 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Dr. Mirabelli is the Chairman of the Board of Directors of the Issuer. William Li 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Thomas Dietz 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Joseph Loscalzo 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Nissim Mashiach 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Richard Schilsky 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director James Cavanaugh 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Augustine Lawlor 47 Thorndike Street, Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Executive Officer Mr. Lawlor is the Chief Operating Officer of the Issuer. Mark O'Mahony 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Executive Officer Mr. O'Mahony is the Chief Manufacturing Officer of the Issuer. Cynthia Sirard 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Executive Officer Dr. Sirard is the Chief Medical Officer of the Issuer. Patricia Martin 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Christian Richard 47 Thorndike Street Suite B1-1 Cambridge MA MASSACHUSETTS 02141 Director Pharmaceuticals Decline to Disclose 06b false 2023-01-17 false true true true Common Stock; Series X Non-Voting Convertible Preferred Stock true The common stock and the Series X non-voting convertible preferred stock were issued in connection with the Issuer's acquisition of Flame Biosciences, Inc. 0 77219193 77219193 0 false 121 0 0 0 false LEAP THERAPEUTICS, INC. /s/ Douglas E. Onsi Douglas E. Onsi President & CEO of the Issuer 2023-03-10