York Space Systems Inc.

A description of the risk factors impacting the Company can be found in Part I, Item 1A “Risk Factors” in the 2025 Annual Report on Form 10-K. Additional risks and uncertainties not currently known to the Company or that the Company currently deems to be immaterial also may materially adversely affect the Company’s business, financial condition or future results.

On January 28, 2026, prior to the effectiveness of the Registration Statement on Form S-1 relating to the Company’s initial public offering, Yellowstone Midco Holdings II, LLC (“Midco II”) converted into a Delaware corporation pursuant to a statutory conversion and changed its name to York Space Systems Inc. (the “Corporate Conversion”). At the time of the Corporate Conversion, all units of Midco II were converted into shares of the Company’s common stock. To the extent the issuance of such shares could constitute a sale of securities, such issuance was not registered under the Securities Act pursuant to the exemption from registration provided by Section 4(a)(2) of the Securities Act.

In addition, during the quarter ended March 31, 2026, the Company issued 2,812,141 shares of common stock in connection with its acquisition of Orbion Space Technology, Inc. The information required by this Item with respect to such issuance was previously reported on the Company’s Current Report on Form 8-K filed with the SEC on March 10, 2026.

None.

Not Applicable.