Kirby McInerney LLP filed a securities class action against York Space Systems over its January 2026 IPO registration statement, alleging undisclosed software failures. YSS shares have fallen more than 70 percent from the $34 offer price to as low as $9.33, after a Wolfpack Research report and a Pentagon program restructuring.
Kirby McInerney LLP filed a securities class action against York Space Systems over its January 2026 IPO as shares fell more than 70 percent.
The lawsuit, filed in the US District Court for the District of Colorado, alleges York's registration statement failed to disclose that its onboard mission and payload software was not fully functional before satellites launched, the firm said in a statement.
The complaint, captioned Ianelli v. York Space Systems Inc. et al., covers investors who bought YSS common stock in the January 29, 2026 offering or traded securities between that date and May 11, 2026. Claims are brought under Sections 11 and 15 of the Securities Act of 1933 and Sections 10(b) and 20(a) of the Securities Exchange Act of 1934.
The stock has traded as low as $9.33, an over 70 percent decline from the $34 IPO price. York, which sells satellites and satellite-related services, derived 96 percent of fiscal 2025 revenue from US government contracts under the Pentagon's Space Development Agency, which in April halted third-tranche Transport Layer payments.
The case stems from a May 11, 2026 report by Wolfpack Research that said former employees claimed York "sent satellites into space without even knowing if the software was fit to accomplish its basic mission." The report said York waited until satellites were in orbit to fully debug the software. YSS fell about $7 intraday on the news.
The complaint alleges the software shortfall presented a risk to York's contracts with the Space Development Agency, whose Transport Layer program is an experimental military satellite constellation designed to provide global tactical data. It also alleges York deceived the agency with false advertising to win contracts and delivered satellites whose mission-critical software was not completed. The US Space Force's Spring 2026 budget restructured the program and redirected third-tranche funding to the newly unveiled Space Data Network.
At least three other firms — Holzer & Holzer, Glancy Prongay Wolke & Rotter and Robbins LLP — have announced similar actions. Investors have until October 30, 2026 to seek appointment as lead plaintiff.
The litigation adds legal and financial uncertainty to a company whose fortunes are tied to a single government customer. Investors will watch for the court's lead-plaintiff appointment and any settlement or dismissal ruling in the coming months.
This article is for informational purposes only and does not constitute investment advice.
