Jack Jennings

Jack Jennings is a seasoned financial professional currently serving as Chief Financial Officer at 73 Strings since September 2025 and as a Seed Investor at consultmed since June 2021. Previously, Jack held the position of Chief Financial Officer at SightCall from November 2021 to April 2025, overseeing finance and revenue operations. At Calastone, Jack served as Head of FP&A and Director Global Proposition from January 2016 to July 2021, facilitating collaboration between product and commercial teams and driving global client initiatives. Additionally, Jack coordinated business transformation efforts as Director Business Optimisation and established the FP&A function as Associate Director FP&A during a period of significant growth. Jack began his career as a Senior Accountant at Tilbrook Rasheed Chartered Accountants from January 2013 to November 2015. Educational credentials include a Graduate Diploma of Chartered Accounting from the Institute of Chartered Accountants Australia and a Bachelor of Commerce in Accounting from the University of South Australia.