Xona, the Burlingame, Calif.-based commercial navigation company building next-generation global navigation infrastructure in Low Earth Orbit, raised $250.0M in Series D equity funding, a follow-on round following its Series A-C. The round was led by Steve Jurvetson's Future Ventures — a longtime SpaceX board member and early Xona backer who has invested in only three space companies: SpaceX, Planet and Xona — with participation from new and existing investors. The excerpt provided was truncated after "The financing values Xo" and did not disclose valuation, business metrics such as clients, revenue, pipeline or employee count, or planned use of funds and expansion plans.