YSS UPCOMING DEADLINE: SueWallSt Alerts York Space Systems Inc. Stockholders of Securities Class Action - Contact the Firm

Investors who acquired York Space Systems stock in or traceable to the Company's January 2026 IPO at $34.00 per share are urged to review their options. The action contends the registration statement touted "proven" and "scalable" satellite technology while omitting that onboard mission and payload software was allegedly not fully functional before launch.

NEW YORK, Oct. 1, 2026 /PRNewswire/ -- SueWallSt announces that a securities class action has been filed against York Space Systems Inc. (NYSE: YSS) on behalf of purchasers who acquired common stock pursuant or traceable to the Company's January 2026 initial public offering, and on behalf of investors who acquired York securities between January 29, 2026 and May 11, 2026. Find out if you might qualify for recovery. You may also contact Joseph E. Levi, Esq. at [email protected] or (888) SueWallSt.

In the Offering, York sold approximately 18.5 million shares at $34.00 per share and received proceeds of approximately $583.4 million, net of underwriting discounts and commissions. By the commencement of this action, the stock traded as low as $9.33, a decline of $24.67 per share, or more than 70%, from the IPO price. Motions for lead plaintiff must be filed with the Court by October 30, 2026.

The Alleged Registration Statement Misrepresentations

The action contends the offering documents presented a "differentiated suite of spacecraft solutions with proven, common technologies" supported by "proprietary satellite software enabling versatile integration of a variety of payloads," and described an "incumbent position leading into Tranches 3 and 4" of the Space Development Agency's Transport Layer program. As pleaded, the registration statement was required to disclose known trends, events, or uncertainties reasonably likely to affect continuing operations, and instead omitted that onboard mission and payload software was allegedly not fully functional before satellites were launched.

What the Registration Statement Allegedly Misrepresented

• The readiness of onboard mission and payload software, which plaintiffs allege was not fully developed at the time of launch
• The description of the satellite platform as "proven and scalable," which the action contends did not reflect the actual state of the technology
• The claimed incumbent standing heading into the third and fourth tranches of the Transport Layer program
• Risk language framing an adverse change in the largest customer's mandate as something that "could" happen, rather than a condition plaintiffs allege was already developing
• The absence of any disclosure that alleged software readiness problems presented a risk to the Company's contracts with that customer

Alleged IPO Proceeds and Defendant Motivation

TThe complaint names the Company, individuals who signed or authorized the signing of the registration statement, directors identified in it, and the investment banks that underwrote the Offering, asserting claims under Sections 11 and 15 of the Securities Act alongside Exchange Act claims. Plaintiffs allege the registration statement was negligently prepared and was not prepared in accordance with the rules and regulations governing it.

"Purchasers in an initial public offering are entitled to offering documents that disclose known trends and uncertainties affecting the company's core business. Here the complaint alleges York's registration statement promoted a proven, scalable satellite platform while omitting that mission-critical software was allegedly still being debugged after launch." -- Joseph E. Levi, Esq.

Submit your information now or call (888) SueWallSt.

WHY SUEWALLST: SueWallSt is powered by Levi & Korsinsky LLP. Levi & Korsinsky LLP has established itself as a nationally-recognized securities litigation firm that has secured hundreds of millions of dollars for aggrieved shareholders and built a track record of winning high-stakes cases. The firm has extensive expertise representing investors in complex securities litigation and a team of over 70 employees to serve our clients. For seven years in a row, Levi & Korsinsky has ranked in ISS Securities Class Action Services' Top 50 Report as one of the top securities litigation firms in the United States.

Frequently Asked Questions About the YSS Lawsuit

Q: How much did YSS stock drop? A: Shares fell approximately over 70%, a decline of $24.67 per share, after the Company disclosed and market reports revealed that Space Development Agency Transport Layer Tranche 3 funding had been halted and that mission-critical satellite software was allegedly not functional before launch. Investors who purchased shares during the Class Period at artificially inflated prices and suffered losses may be eligible to seek compensation.

Q: What specific misstatements does the YSS lawsuit allege? A: The complaint alleges York Space Systems Inc. made materially false or misleading statements regarding the functionality and readiness of its satellite software and the maturity of its purportedly modular, scalable spacecraft platform during the Class Period. When reports emerged that Tranche 3 Transport Layer funding had been halted and that mission-critical software was allegedly incomplete before launch, the stock price declined sharply.

Q: What court was the YSS class action filed in? A: The case was filed in the United States District Court for the District of Colorado, governed by the Private Securities Litigation Reform Act of 1995.

Q: What is a lead plaintiff and why does it matter? A: A lead plaintiff is the investor appointed by the court to represent the entire class. Lead plaintiffs are typically investors with the largest documented losses. Being appointed does not increase individual recovery but gives direct oversight of how the case is run.

Q: What documents do I need to submit my information? A: Brokerage statements or trade confirmations showing purchase dates, share quantities, prices paid, and any subsequent sale dates and prices.

Q: What if I already sold my YSS shares -- can I still recover losses? A: Yes. Eligibility is based on when you purchased, not whether you still hold the shares. Investors who bought during the Class Period and sold at a loss may still be eligible to participate.

Q: What does it cost me to participate? A: There is no upfront cost to submit your information and review whether you may be eligible to recover. Should you choose to participate in the securities class action, they are generally handled on a contingency basis, with any attorneys' fees and expenses subject to court approval.

Q: Can I join a different law firm's lawsuit instead? A: Yes. Investors may choose which law firm to contact. Multiple firms often file competing complaints. The court may consolidate related cases and appoint a single lead counsel.

CONTACT:\
Levi & Korsinsky, LLP\
Joseph E. Levi, Esq.\
33 Whitehall Street, 27th Floor\
New York, NY 10004\
[email protected]\
Tel: (888) SueWallSt\
Fax: (212) 363-7171

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SOURCE SueWallSt.com