Bronstein, Gewirtz & Grossman LLC Urges York Space Systems, Inc. Investors to Act: Class Action Filed Alleging Investor Harm

Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against York Space Systems, Inc. (NYSE: YSS) and certain of its officers. This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired York securities: (1) pursuant to the registration statement and prospectus issued in connection with the Company's January 29, 2026 initial public offering ("IPO"); or (ii) between January 29, 2026, and May 11, 2026, both dates inclusive (the "Class Period").

The Complaint alleges that Defendants made materially false and/or misleading statements, as well as failed to disclose material adverse facts about the Company's business, operations, and prospects. Specifically, the Complaint alleges that Defendants failed to disclose to investors that: the Company's onboard mission and payload software was not fully functional before satellites were launched; this ongoing trend presented a risk to the Company's contracts with the Pentagon's Space Development Agency ("SDA"), which deceived the SDA with false advertising to win its contracts, cut corners, and delivered satellites whose mission-critical software was not completed; and that, as a result of the foregoing, Defendants' positive statements about the Company's business, operations, and prospects were materially misleading and/or lacked a reasonable basis.

A class action lawsuit has already been filed. If you wish to review a copy of the Complaint, you can visit the firm's site: bgandg.com/cases/york-space-systems-inc-yss-class_action_lawsuit , or you may contact Peretz Bronstein, Esq. or his Client Relations Manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC at 917-590-0911. If you suffered a loss in York you have until October 30, 2026, to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as lead plaintiff.

We, Bronstein, Gewirtz & Grossman LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide. More at www.bgandg.com

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein , Founding Partner of Bronstein, Gewirtz & Grossman, LLC.