INVESTOR NOTICE: York Space Systems Inc. (YSS) Investors with Substantial Losses Have Opportunity to Lead the York Space Class Action Lawsuit, Robbins Geller Rudman & Dowd LLP Announces

Robbins Geller Rudman & Dowd LLP announces that purchasers or acquirers of York Space Systems Inc. (NYSE: YSS): (i) common stock pursuant and/or traceable to the registration statement and prospectus issued in connection with York Space's January 2026 initial public offering ("IPO"); and/or (ii) securities between January 29, 2026 and May 11, 2026, both dates inclusive (the "Class Period"), have until October 30, 2026 to seek appointment as lead plaintiff of the York Space class action lawsuit. Captioned Ianelli v. York Space Systems Inc. , No. 26-cv-04074 (D. Colo.), the York Space class action lawsuit charges York Space, and certain of York Space's top current and former executives, incoming directors, and underwriters of the IPO with violations of the Securities Act of 1933 and/or the Securities Exchange Act of 1934. York Space operates as a space and defense provider that primarily sells satellites and satellite-related services. According to the complaint, for fiscal 2025, 96% of York Space's revenue was derived from projects contracted by the U.S. Federal Government under the Pentagon's Space Development Agency ("SDA"). The complaint alleges that in its January 2026 IPO, York Space sold approximately 18.5 million shares of common stock at a price of $34.00 per share. The York Space class action lawsuit alleges that in the IPO's offering documents and throughout the Class Period defendants made false and/or misleading statements and/or failed to disclose that: (i) York Space's onboard mission and payload software was not fully functional before satellites were launched; (ii) this ongoing trend presented a risk to York Space's contracts with the SDA; and (iii) as a result of the foregoing, defendants' positive statements about York Space's business, operations, and prospects, were materially misleading and/or lacked a reasonable basis. The York Space class action lawsuit further alleges that on May 11, 2026, at approximately 10 a.m. EST, Wolfpack Research published a short report entitled "YSS: Lost In Space – The Pentagon Just Killed 96% of York's Revenue." The report allegedly cited multiple former software engineers who stated that York Space "sent satellites into space without even knowing if the software was fit to accomplish its basic mission," and allegedly raised suspicions that the Pentagon's decision to eliminate the Tranche 3 funding was "rooted in severe disappointment in York." The Private Securities Litigation Reform Act of 1995 permits any investor who purchased or acquired York Space common stock pursuant and/or traceable to the IPO's offering documents and/or securities during the Class Period to seek appointment as lead plaintiff in the York Space class action lawsuit. A lead plaintiff is generally the movant with the greatest financial interest in the relief sought by the putative class who is also typical and adequate of the putative class. A lead plaintiff acts on behalf of all other class members in directing the York Space investor class action lawsuit. The lead plaintiff can select a law firm of its choice to litigate the York Space shareholder class action lawsuit. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff of the York Space class action lawsuit.