Dirk Wallinger Reports 8.6% Initial Stake in York Space Systems Inc. (YSS)

On May 15, 2026, Dirk Wallinger filed a Schedule 13G reporting a new beneficial ownership position in York Space Systems Inc. (YSS). As of the event date on March 31, 2026, Wallinger beneficially owns 11,168,593 shares of Common Stock, representing 8.6% of the company's outstanding shares. The filing indicates that Wallinger holds shared voting power over all reported shares and sole dispositive power over the same amount. The filing notes that Wallinger may be deemed a member of a "group" with affiliates of AE Industrial Partners, LP due to a Director Nomination Agreement dated January 28, 2026. However, Wallinger expressly disclaims membership in such a group and beneficial ownership of any securities held by AE Industrial Partners affiliates. The calculation of the 8.6% ownership stake is based on 129,694,458 shares of common stock outstanding, as reported in the issuer's Quarterly Report on Form 10-Q filed on the same day. This initial filing establishes Wallinger as a significant individual shareholder in the aerospace firm.