York Space Systems Sued Over Satellite Software Claims After 10.9% Stock Drop
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New York – September 11, 2026 -- A class action lawsuit has been filed against York Space Systems Inc. (NYSE:YSS) and several senior executives following a 10.9% single-day stock decline tied to allegations the company misrepresented the capabilities of its proprietary satellite software.
Stock fell $3.91 per share after Wolfpack Research report
Shares dropped from a closing price of $35.88 on September 11, 2026, to $31.97 on September 11, 2026, after short-seller Wolfpack Research published a report citing former employees who claimed York Space Systems launched satellites without confirming the software could perform its core mission. The report stated the company had not finished software development before launch and instead attempted to debug systems while satellites were already in orbit.