York Space Systems, Inc.

York Space Systems is a space and defense prime based in the United States. It provides mission-critical solutions for national security, government, and commercial customers. The company designs, produces, integrates, and operates spacecraft and constellations. Its product lineup includes S-CLASS, LX-CLASS, and M-CLASS satellite platforms that address a range of space market needs. York also offers software that enables versatile integration of various payloads and supply chain commonalities across platforms, as well as software-enabled services. Founded in 2012 and headquartered in Greenwood Village, Colorado, the company was formerly known as Yellowstone Midco Holdings II, LLC before rebranding in January 2026.

York Space Systems is listed on the New York Stock Exchange (NYSE) under the ticker symbol YSS. Its shares are traded in US Dollars (USD). The company is headquartered in the United States and its primary listing is on the NYSE, providing investors with access to its stock in the US equity market.

York Space Systems operates in the Industrials sector, specifically within the Aerospace & Defense industry. This classification reflects the company's focus on providing space and defense solutions, including satellite platforms, spacecraft integration, and mission-critical services for national security and government customers. As an aerospace and defense prime, York serves a vital role in the space ecosystem, addressing both commercial and defense-related needs.

York Space Systems is headquartered in Greenwood Village, Colorado, United States. The company primarily serves customers in the United States, including national security agencies, government entities, and commercial clients. Its solutions are designed to address requirements across the space ecosystem throughout the mission lifecycle. While its focus is on the US market, its offerings in spacecraft platforms and software-enabled services support a range of space missions for domestic customers.

York Space Systems offers a comprehensive suite of products and services centered on space and defense solutions. Its main products include the S-CLASS, LX-CLASS, and M-CLASS spacecraft, which are satellite platforms designed to meet various space market needs. The company also provides proprietary hardware and software capabilities that enable versatile integration of payloads and supply chain commonalities across platforms. Additionally, York offers software-enabled services and manages spacecraft and constellations for customers. These offerings support national security, government, and commercial missions throughout the entire mission lifecycle.