HAGENS BERMAN, NATIONAL TRIAL ATTORNEYS, ENCOURAGES YORK SPACE SYSTEMS (YSS) INVESTORS WITH SUBSTANTIAL LOSSES TO CONTACT FIRM PRIOR TO OCT. 30 LEAD PLAINTIFF DEADLINE

SAN FRANCISCO, Oct. 21, 2026 /PRNewswire/ — Hagens Berman Sobol Shapiro LLP, a global litigation law firm specializing in shareholder rights and complex securities fraud, reminds investors in York Space Systems Inc. (NYSE: YSS) of the upcoming October 30, 2026 lead plaintiff deadline.

If you suffered significant financial losses from your investment in York Space Systems ($YSS)—either through shares purchased pursuant or traceable to the January 2026 Initial Public Offering (IPO) or on the open market between January 29, 2026 and May 11, 2026—you are encouraged to submit your losses to Hagens Berman to evaluate your legal options.

CASE BACKGROUND & CORE ALLEGATIONS

York Space Systems is a satellite manufacturer that relies heavily on federal contracts, deriving roughly 96% of its FY2025 revenues from the U.S. Department of Defense’s Space Development Agency (SDA), primarily within its Transport Layer satellite constellation program.

On January 29, 2026, York completed its IPO, selling 18.5 million shares at $34.00 per share.

The pending securities class action lawsuit alleges that York’s IPO Registration Statement and subsequent public statements were materially false and misleading. Specifically, defendants failed to disclose that:

1. Unfinished Payload Software: Onboard mission and payload software on York’s satellites was not fully functional or combat-ready prior to orbital launch, forcing the company to perform risky, real-time debugging and software fixes in orbit.
2. Operational Deficiencies: Satellite operational readiness, reliability, and deployment metrics touted to investors overstated the actual capabilities of the deployed satellite architecture.
3. Defense Contract Exposure: The U.S. Space Force restructured the SDA Transport Layer program and halted payments under key contract tranches, directly threatening York’s primary revenue stream.

THE MARKET DISCLOSURES

• April 2026: Disclosures regarding U.S. Space Force budget restructurings revealed an immediate freeze on SDA Tranche 3 payments, impacting York’s projected award pipeline.
• May 11, 2026: An investigative research report revealed former employee accounts confirming satellites were launched into space with incomplete, buggy software, leading to mission degradations.
• Resulting Impact: Following these disclosures, York Space Systems stock collapsed by over 70% from its IPO price, declining to below $10.00 per share and causing massive losses to public investors

What Can $YSS Investors Do:

If you purchased or otherwise acquired York Space Systems Inc. (NYSE: YSS) securities and suffered losses, you have until October 30, 2026 to ask the Court to appoint you as Lead Plaintiff.

To discuss your legal rights, visit www.hbsslaw.com/yss or contact Reed Kathrein, who is leading the firm’s investigation, by calling 844-916-0895 or emailing YSS@hbsslaw.com.

If you’d like more information and answers to frequently asked questions about the York Space Systems case and the firm’s investigation, read more »

Whistleblowers: Persons with non-public information regarding York Space Systems should consider their options to help in the investigation or take advantage of the SEC Whistleblower program. Under the new program, whistleblowers who provide original information may receive rewards totaling up to 30 percent of any successful recovery made by the SEC. For more information, call Reed Kathrein at 844-916-0895 or email YSS@hbsslaw.com.

About Hagens Berman
Hagens Berman is a global plaintiffs’ rights complex litigation firm focusing on corporate accountability. The firm is home to a robust practice and represents investors as well as whistleblowers, workers, consumers and others in cases achieving real results for those harmed by corporate negligence and other wrongdoings. Hagens Berman’s team has secured more than $2.9 billion in this area of law. More about the firm and its successes can be found at hbsslaw.com. Follow the firm for updates and news at @ClassActionLaw. 

Attorney Advertising. Prior results do not guarantee a similar outcome in any future case.

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SOURCE Hagens Berman Sobol Shapiro LLP