Why AST SpaceMobile Shares Tumbled Today

AST SpaceMobile (NASDAQ: ASTS) shares plunged more than 17% on Thursday, July 16, 2026, closing near $55.01, after the satellite broadband company announced late Wednesday that it would raise $1 billion through a private offering of convertible senior notes.

The company priced $1.0 billion in 1.625% convertible senior notes due 2034 in a Rule 144A private offering to qualified institutional buyers, with settlement expected around July 20.

The notes carry an initial conversion price of approximately $79.57 per share — a 20% premium to Wednesday’s closing price of $66.31. AST also entered into capped call transactions with an effective conversion price of $149.20 per share, intended to limit potential dilution to existing shareholders.

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Net proceeds are expected to total roughly $983.6 million, which the company said will fund “growth initiatives” and secure additional access to orbit for its space-based cellular broadband network, including potential “partnerships and/or acquisitions” to vertically integrate its launch capabilities. AST clarified it currently has no agreements in place for any such deals.

The raise marks the second billion-dollar convertible offering from AST this year, following a similar move in February that also pressured shares. It comes amid an already steep decline for the stock, which is down roughly 27% over the past month and nearly 60% from its late-May high above $130.

The broader space sector also softened Thursday amid a wider technology selloff, with chipmakers and other high-beta growth names under pressure, compounding losses for AST and peers.