ROSEN, A LEADING LAW FIRM, Encourages York Space Systems Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - YSS

New York, New York--(Newsfile Corp. - September 27, 2026) - WHY:  Rosen Law Firm, a global investor rights law firm, reminds purchasers of York Space Systems Inc. (NYSE: YSS): (i) common stock pursuant and/or traceable to the registration statement and prospectus (collectively, the "Registration Statement") issued in connection with York Space Systems' January 2026 initial public offering ("IPO"); and/or (ii) securities between January 29, 2026 and May 11, 2026, both dates inclusive (the "Class Period"), of the important October 30, 2026 lead plaintiff deadline. SO WHAT: If you purchased York Space securities you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement. WHAT TO DO NEXT: To join the York Space class action, go to https://rosenlegal.com/cases/york-space-systems-inc/join or call Phillip Kim, Esq. toll-free at 866-767-3653 or email [email protected] for information on the class action. A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than October 30, 2026. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation. WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Many of these firms do not actually handle securities class actions, but are merely middlemen that refer clients or partner with law firms that actually litigate the cases. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm has achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered billions of dollars for investors. In 2019 alone the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers. DETAILS OF THE CASE: According to the lawsuit, defendants made materially false and/or misleading statements and/or failed to disclose that: (1) York Space's onboard mission and payload software was not fully functional before satellites were launched; that (2) this ongoing trend presented a risk to York Space's contracts with the SDA, deceived the Pentagon's Space Development Agency (the "SDA") with false advertising to win its contracts, cut corners, and delivered satellites whose mission-critical software was not completed; and (3) 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. When the true details entered the market, the lawsuit claims that investors suffered damages. To join the York Space class action, go to https://rosenlegal.com/cases/york-space-systems-inc/join or call Phillip Kim, Esq. toll-free at 866-767-3653 or email [email protected] for information on the class action. No Class Has Been Certified. Until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice. You may also remain an absent class member and do nothing at this point. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff. Follow us for updates on LinkedIn: https://www.linkedin.com/company/the-rosen-law-firm , on Twitter: https://twitter.com/rosen_firm or on Facebook: https://www.facebook.com/rosenlawfirm/ . Attorney Advertising. Prior results do not guarantee a similar outcome. ------------------------------- Contact Information: Laurence Rosen, Esq. Phillip Kim, Esq. The Rosen Law Firm, P.A. 275 Madison Avenue, 40th Floor New York, NY 10016 Tel: (212) 686-1060 Toll Free: (866) 767-3653 Fax: (212) 202-3827 [email protected] www.rosenlegal.com To view the source version of this press release, please visit https://www.newsfilecorp.com/release/316153 Source: The Rosen Law Firm PA