Why is York Space Systems stock tumbling afterhours today?
York Space Systems shares fell 17.6% in after-hours after the company cut full-year 2026 revenue guidance to $375–$405 million (midpoint about $390 million) from a prior midpoint near $570 million. Q2 revenue was about $92.5 million and gross margin rose to 24%. The company cited slower government IDIQ procurement and supply chain delays, plus CFO Kevin Messerle’s departure effective next day.