NASA has obligated a cumulative $3,055,729,526.07 to date under its Human Landing System (HLS) contract with Space Exploration Technologies Corp. (SpaceX), according to USAspending.gov. The definitive, firm-fixed-price contract, managed by NASA's Marshall Space Flight Center, was signed May 13, 2020 and carries a potential value of $4,549,695,247.92 if all options are exercised, with performance running through December 6, 2027.