AST SpaceMobile and Rakuten Form Japan Satellite JV Backed by Up to $1 Billion

AST SpaceMobile and Rakuten agreed to establish a joint venture to build a direct-to-device satellite communications network in Japan, with up to 148 billion yen in government support.

Key Highlights:

• Rakuten AST is expected to receive up to 148 billion yen (about $1 billion) over approximately three years through Japan’s J-LEO project.
• The venture plans to deploy and operate a Japanese mid-band satellite network, targeting domestic service by the end of March 2029.
• AST SpaceMobile will supply satellites for Japan’s sovereign constellation, designed to connect standard smartphones without specialized equipment.
• The network aims to extend coverage to underserved areas and support communications continuity during disasters, including emergency inter-carrier roaming.
• Rakuten Group will hold 51% of the venture and an AST SpaceMobile subsidiary will hold 49%; services may also reach AST customers worldwide, subject to regulatory approval.

Original SEC Filing: AST SpaceMobile, Inc. [ ASTS ] - 8-K - Nov. 10, 2026