Welcome to our dedicated page for York Space Systems (Yellowstone) SEC filings (Ticker: YSS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
York Space Systems filings document material events, public-company capital structure, operating results, governance actions, and acquisition-related disclosures. Recent 8-K reports cover financial results, board and committee changes, material agreements, and the issuance of common stock in connection with the completed Orbion Space Technology acquisition.
The company’s registration and offering records describe its NYSE-listed common stock, initial public offering, underwriting agreement, and related Securities Act filings. York’s filings also identify its Delaware corporate status and provide formal disclosures for shareholder, governance, and capital-raising matters.
York Space Systems Inc. reported an insider Form 4 showing an indirect acquisition of common stock tied to a merger. AE Industrial HorizonX Venture Fund II, LP received 287,789 shares of York common stock at $34.00 per share under an Agreement and Plan of Reorganization among York Space Systems, Solestial, Inc. and related parties dated May 15, 2026. After this issuance, entities managed by AE Industrial Partners collectively held 30,483,877 York shares. These holdings are ultimately controlled by AeroEquity GP, LLC, whose managing members Michael Greene and David Rowe make voting and investment decisions, while all parties disclaim beneficial ownership beyond their pecuniary interests.
York Space Systems Inc. filed an amended report to update details of its recent acquisition of Solestial, Inc.. The company now discloses that, at the June 4, 2026 closing, it issued 1,703,577 common shares at a negotiated value of $34.00 per share, as part of the merger consideration.
The acquisition purchase price was approximately $67 million, paid to the seller at closing through a mix of cash and stock. The shares were issued in an unregistered transaction relying on exemptions from registration under the Securities Act, including Section 4(a)(2) and Regulation D. Other terms of the original report remain unchanged, and the filing includes customary forward-looking statement cautions relating to the transaction and the company’s future plans.
York Space Systems Inc. plans to acquire all equity interests of Solestial, Inc. under an Agreement and Plan of Reorganization. As consideration, York expects to issue up to approximately 2.35 million shares of its common stock at closing, with the remaining purchase price paid in cash.
The stock consideration will be issued as restricted shares under private-placement exemptions from registration, including Section 4(a)(2) of the Securities Act or Regulation D. York expects to close the transaction in the second quarter of 2026, subject to customary conditions and required approvals, and highlights multiple risks and uncertainties that could delay or prevent completion.
York Space Systems Inc. files a Schedule 13G reporting beneficial ownership of 11,168,593 shares of common stock, representing 8.6% of the class. The percentage is calculated based on 129,694,458 shares outstanding as of 03/31/2026, per the issuer's Form 10-Q.
The filing names Dirk Wallinger as the reporting person and shows shared voting power and sole dispositive power tied to the 11,168,593 shares. The statement notes a Director Nomination Agreement dated 01/28/2026 and disclaims that the reporting person’s cover-page responses do not reflect AE Industrial Partners affiliates' holdings.
York Space Systems Inc. Schedule 13G discloses ownership by AE-related holders and affiliated parties. The filing reports 30,196,088 shares (shared voting/dispositive power) equal to 23.28% of common stock based on May 15, 2026 reporting. The Reporting Persons state they may be deemed to beneficially own an aggregate of 105,542,882 shares, or 81.38%, when potential holdings by Dirk Wallinger and parties to certain Voting Agreements are included; these group attributions are described as conditional and the filers disavow any admission of group membership.
The filing names AeroEquity GP, LLC, AE Industrial Partners funds, Michael Robert Greene and David H. Rowe as Reporting Persons and cites a Director Nomination Agreement and Voting Agreements as the bases for potential aggregated attribution.
York Space Systems Inc. reported higher revenue but a much larger loss for the quarter ended March 31, 2026. Revenue rose to $116.3 million from $106.3 million, driven almost entirely by U.S. government work, with one customer contributing about 99% of revenue.
The company posted a net loss of $114.8 million versus $11.7 million a year earlier. The loss reflects heavy non‑cash and one‑time items, including $84.7 million of stock‑based compensation, a $60.7 million deemed dividend on conversion of pre‑IPO Class P Units, and higher transaction and amortization expenses.
York completed an IPO at $34.00 per share, issuing 18.5 million shares for net proceeds of $583.4 million. Cash and cash equivalents increased to $655.7 million, while total debt remained around $149.1 million under a term loan facility with an undrawn $150.0 million revolver. The company continues to invest in growth, acquiring Orbion Space Technology for about $74.9 million and later agreeing to buy All.Space Holdings for $355 million, partly in cash and partly in stock. Remaining performance obligations were $642.3 million, with more than half expected to convert to revenue within 12 months.
York Space Systems Inc. reported first quarter 2026 revenue of $116.3 million, up 9% from a year earlier, mainly from major government programs. Gross margin fell to 19%, and net loss widened to $114.8 million, driven by higher operating expenses including $84.7 million of stock-based compensation and IPO-related costs.
Adjusted EBITDA swung from a $5.5 million profit to a $3.6 million loss. Despite the loss, York completed its IPO, raising $583 million, acquired Orbion Space Technology, agreed to acquire ALL.SPACE, and increased backlog to $642.3 million. Liquidity was strong with $806 million available and full-year 2026 revenue guidance of $545–$595 million was reaffirmed.
York Space Systems Inc. ownership disclosure: BlackRock Portfolio Management LLC reports beneficial ownership of 17,846,934 shares of York Space Systems common stock, representing 14.0% of the class as reported on 03/31/2026. The filing shows sole voting power of 17,753,925 shares and sole dispositive power of 17,846,934.
The Schedule 13G states the holdings are reported by certain BlackRock business units and includes Exhibit 24 (power of attorney) and Exhibit 99 (Item 7 subsidiary information). The signature block is dated 04/29/2026.
York Space Systems Inc. entered into an Agreement and Plan of Merger to acquire all outstanding equity of All.Space Holdings, Inc., which will become an indirect wholly owned subsidiary. The aggregate purchase price at closing is $355 million, subject to customary cash, debt, expense and net working capital adjustments.
At closing, York Space Systems expects to pay approximately $155 million in cash and issue up to 5.9 million shares of its common stock. It will also fund escrow and reserve accounts, including $5 million for purchase price adjustments, $1.5 million for reorganization indemnification, BGP 750,000 for special indemnification and $1 million as an expense reserve.
Securityholders receiving York shares face staggered lock-ups: half of their shares are restricted for six months after closing and the remainder for nine months. Closing depends on customary conditions, including required antitrust, foreign investment and telecommunications approvals, with an initial outside date 120 days after signing, extendable by up to 90 days.
Davidson Janine reported acquisition or exercise transactions in this Form 4 filing.
York Space Systems Inc. director Janine Davidson reported receiving a grant of 4,381 shares of Common Stock in the form of restricted stock units. These units were awarded at no cash cost per share and represent a compensation-related equity award rather than an open-market purchase.
The restricted stock units vest in full on January 30, 2027, meaning Davidson will gain full ownership of the underlying shares on that date if the vesting conditions are met. Following this grant, she holds 4,381 shares directly, reflecting her current reported equity position from this filing.