424B3

AST SpaceMobile rebooked its BlueWalker 3 test satellite launch to Summer 2022 from an earlier window, paying a rebooking fee to its launch service provider to allow additional time for testing and preparation. The prospectus supplement updates securities offerings including 28.75 million shares of Class A common stock and 6.1 million warrants, with the company's stock trading at $8.42 per share and warrants at $3.41 as of December 6, 2021.