Why did ASTS move on Jul 15, 2026?

AST SpaceMobile's stock fell sharply in after-hours trading following the announcement of a proposed private offering of $1.0 billion in convertible senior notes due 2034 [1], [2], [3]. The prospect of future equity dilution from the convertible debt triggered an immediate sell-off, sending the share price down roughly 13% in the minutes following the news [1], [2], [3]. Additional details of the offering, including an option for purchasers to buy up to $150 million in additional notes [4] and a 1.625% coupon rate [6], further solidified the downward pressure.