CesiumAstro Raises $730M Series D, Unveils Synchronicity Network

From supplier to operator

Synchronicity marks a shift for a company that has so far supplied space technology and complete spacecraft. It will now develop and operate its own infrastructure. The design uses a dynamically managed, multi-beam, multi-frequency architecture covering Ku-, Ka- and V-band, with edge compute and multi-orbit operations. AI is meant to handle network optimization, dynamic allocation of communications resources and autonomous adaptation to changing conditions.

The company stresses vertical integration: custom silicon, active phased arrays, software-defined payloads, processors, spacecraft, mission software and terminals for air, ground, mobility and maritime use. "We designed the silicon, the active phased array, the payload, processors, the spacecraft, ground terminals, and the network as one system," CEO Shey Sabripour said.

That stack was reinforced by three acquisitions in the past 12 months: Jariet Technologies (millimeter-wave RF system-on-chip), 1Aardvark (mission software and autonomy for defense programs) and Vidrovr (real-time multimodal AI signal analysis).

Element-1 and expansion

CesiumAstro launched its first satellite, Element-1, in October 2026 and has begun on-orbit operations. It is the first of eight planned spacecraft, with seven more launches secured for the next phase.

The new funds will go toward advanced technologies, U.S. manufacturing capacity, next-generation spacecraft, Synchronicity deployment and international growth. The company also plans a $500 million investment over five years to expand its Austin-area headquarters, including the purchase of 270,000 square feet of advanced manufacturing space.