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.
Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on York Space Systems (Yellowstone)'s stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.
Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into York Space Systems (Yellowstone)'s regulatory disclosures and financial reporting.
Yellowstone Midco Holdings II, LLC Chief Supply Chain Officer Rudra Devjyoti received an equity award in the form of restricted stock units. On 01/30/2026, he was granted 23,529 shares of common stock at a price of $0, described as restricted stock units that vest over three years. Following this award, he beneficially owns 358,357 shares of common stock in direct ownership.
Yellowstone Midco Holdings II, LLC (YSS) filed an initial insider ownership report for Chief Accounting Officer Brian D. Frantz as of January 29, 2026. The filing shows he beneficially owns 5,706 shares of common stock, held directly.
His holdings include 3,804 shares of restricted stock that vest over two years, indicating a meaningful portion of his stake is subject to ongoing service or performance conditions. No derivative securities, such as options or warrants, are reported in this filing.
Funds and accounts managed by BlackRock subsidiaries, reported through BlackRock Portfolio Management LLC, acquired 752,500 shares of Yellowstone Midco Holdings II, LLC common stock on January 30, 2026 at $34 per share. After this purchase, 17,846,934 shares of Yellowstone Midco common stock are reported as indirectly held.
These shares are held across multiple advised funds and accounts managed by various BlackRock entities. BlackRock Portfolio Management LLC, the advised funds and accounts, and their related managers expressly disclaim beneficial ownership of these shares except to the extent of their pecuniary interest, and state that inclusion in this report is not an admission of beneficial ownership.
York Space Systems Inc. priced its initial public offering of common stock at $34.00 per share and agreed to sell 18,500,000 shares under an underwriting agreement with Goldman Sachs, Jefferies and Wells Fargo. Underwriters received a 30‑day option to buy up to 2,775,000 additional shares, and the offering closed with share delivery on January 30, 2026.
In connection with the IPO, York converted from a Delaware LLC to a Delaware corporation, adopted a new certificate of incorporation and bylaws, and appointed seven directors to its board. The company also adopted the 2026 Omnibus Incentive Plan and entered into indemnification agreements with directors and executive officers, along with various tax receivable, registration rights, voting, director nomination and consulting agreements detailed in attached exhibits.