Series D · Space tech

CesiumAstro raises $630 million Series D equity for satellite expansion

Janus Henderson Investors leads the equity component of a $730 million package that includes $100 million in debt.

CesiumAstro has closed $630 million in Series D equity financing led by Janus Henderson Investors, alongside a $100 million debt facility. The $730 million package values the company at more than $4.5 billion. Participants in the equity round include Insight Partners, Sands Capital, Sumitomo Corporation of Americas, Woven Capital, Incharge Capital, Magnetar and NewSpace Capital.

Announced on November 5, the funding supports manufacturing growth and Synchronicity, a planned 737-satellite communications network. CesiumAstro aims to combine its silicon, antenna, payload and spacecraft technology into infrastructure it develops and operates itself.

Use of funds

Develop and deploy the Synchronicity satellite constellation

Expand spacecraft manufacturing and international operations

Funding history

Series D · This round$630M
Series C$470M

Sources

  1. CesiumAstro announces Series D and Synchronicitycesiumastro.com · Nov 5, 2026
  2. CesiumAstro Raises $730M, Reaches Valuation Above $4.5Bpayloadspace.com · Nov 5, 2026