Philadelphia, Pennsylvania--(Newsfile Corp. - September 17, 2026) - Grabar Law Office is investigating potential claims on behalf of long-term shareholders of AST SpaceMobile, Inc. (NASDAQ: ASTS) concerning whether certain officers and directors breached fiduciary duties owed to the Company.

What Is This Investigation About? The investigation follows the filing of a federal securities fraud class action against AST SpaceMobile, Chairman and Chief Executive Officer Abel Avellan, and Chief Financial Officer and Chief Legal Officer Andrew M. Johnson. Grabar Law Office is investigating whether AST's officers and directors breached fiduciary duties owed to the Company in connection with the conduct alleged in the securities action.

If you purchased AST SpaceMobile, Inc. (NASDAQ: ASTS) shares before March 4, 2025 and continue to hold shares today, you can to seek corporate reforms, recovery of funds for the Company, and other relief, including a court approved personal service award, at no cost to you whatsoever, through a shareholder derivative or corporate-governance action. Visit https://grabarlaw.com/the-latest/astspacemobile-shareholder-investigation/, contact Joshua H. Grabar at jgrabar@grabarlaw.com, or call 267-507-6085 to learn more.

What Is Alleged? According to the securities complaint, AST and certain senior executives allegedly made materially false or misleading statements or failed to disclose that:

1. AST's increasing capital requirements were likely to increase the Company's debt load and shareholder dilution more frequently and on a greater scale than investors had been led to expect;
2. AST allegedly overstated the sufficiency of its capital and liquidity position to achieve its strategic and business objectives;
3. AST allegedly overstated the durability of its competitive position in the satellite direct-to-cellular market;
4. AST was allegedly experiencing slow user adoption in the United States and Japan; and
5. these circumstances were allegedly likely to negatively affect AST's business and financial prospects.

The underlying class action complaint alleges that AST continued making positive statements concerning its liquidity and competitive position while subsequently raising substantial additional capital through multiple convertible-note offerings.

In October 2025, AST announced a convertible-note offering ultimately sized at $1.0 billion. Its share price allegedly declined approximately 9.24% following the disclosures.

AST announced another $1.0 billion convertible-note offering in February 2026, after which its stock allegedly declined approximately 15.17%.

On July 15, 2026, AST announced another $1.0 billion convertible-note offering, with an option for an additional $150 million. AST shares allegedly declined 17.04% the following day, closing at $55.01 per share.

The underlying class action complaint also alleges that Chairman and CEO Abel Avellan sold 55,244 AST shares for more than $5.5 million, while CFO and Chief Legal Officer Andrew M. Johnson sold 190,131 shares for more than $13 million during the alleged Class Period.

What Can You Do Now? If you purchased AST SpaceMobile, Inc. (NASDAQ: ASTS) shares before March 4, 2025 and continue to hold shares today, you are encouraged to Visit https://grabarlaw.com/the-latest/astspacemobile-shareholder-investigation/, contact Joshua H. Grabar at jgrabar@grabarlaw.com, or call 267-507-6085. You can seek corporate-governance reforms, monetary recovery for the Company, strengthened disclosure and oversight procedures, and other relief on behalf of AST SpaceMobile and a court approved incentive award at no cost to you whatsoever.

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To view the source version of this press release, please visit https://www.newsfilecorp.com/release/314779

Source: Grabar Law Office