# CesiumAstro Startup profile on Capital Atlas: https://capitalatlas.ai/startups/cesiumastro - Industry: Aerospace - Headquarters: Austin, US - Website: www.cesiumastro.com - Total disclosed funding: $1.2B - Latest round: Debt (Nov 6, 2026) - Investors on record: 30 ## About CesiumAstro, Inc. is a US-based company specializing in advanced, high-throughput phased array communication payloads for both space and airborne platforms, enhancing connectivity across various missions.Founded in 2017 in Austin, US, CesiumAstro focuses on high-throughput communication solutions. The company has raised a total of USD 65 mn in Series B funding as of June 18, 2024, led by Trousdale Ventures and other notable investors, including Kleiner Perkins and L3Harris Technologies. CEO and Founder Shey Sabripour has a history of founding technology companies, contributing to CesiumAstro's innovative approach in the industry.CesiumAstro specializes in high-throughput, plug-and-play phased array communication payloads for space and airborne applications. Their core product, the Element satellite, offers flexible communication solutions that maximize data rates and spectral efficiency, with features such as dynamic frequency-to-beam allocation and on-orbit reconfigurability. The company serves sectors including commercial telecommunications, defense, and aerospace, providing high-capacity connectivity solutions globally across North America, Europe, and Asia-Pacific.CesiumAstro generates revenue from its advanced communication systems, including the Element satellite and modular active phased array systems. Operating primarily on a B2B model, it engages with government agencies, defense contractors, and telecommunications providers through customized contracts. Revenue streams include one-time purchases and long-term partnerships, with pricing structured according to payload configurations for both small and large-scale applications.In June 2024, CesiumAstro secured USD 65 mn in Series B funding to support its growth initiatives. The company plans to expand its product offerings with new designs scheduled for release in the upcoming year, enhancing their communication capabilities. Furthermore, CesiumAstro aims to enter new markets, specifically targeting additional opportunities in Europe and Asia by the end of 2025. The funding will be allocated towards recruitment, research and development, and expanding market reach. In February 2026, CesiumAstro, Inc. raised USD 270 million in series C funding led by Trousdale Ventures, with participation from Airbus Ventures, Development Bank of Japan, Mesh Ventures, Janus Henderson Investors, NewSpace Capital, Woven by Toyota. The round was part of a larger USD 470 million series C and venture debt funding. The January 2026 funding will use to expand its U.S. facilities, increase manufacturing capacity, and speed up the development and deployment of its software-defined, artificial intelligence-enabled space communications systems. ## Funding rounds - Debt, Nov 6, 2026, $100M — Janus Henderson, Export-Import Bank of the United States, Incharge Capital, Insight Partners, JPMorgan, Magnetar, NewSpace Capital, Sands Capital, Sumitomo Corporation of Americas, AV, Woven Capital - Series D, Nov 5, 2026, $730M — Janus Henderson, Export-Import Bank of the United States, Incharge Capital, Insight Partners, JPMorgan, Magnetar, NewSpace Capital, Sands Capital, Sumitomo Corporation of Americas, AV, Woven Capital - Series C, Feb 2, 2026, $270M — Development Bank of Japan, Janus Henderson Investors, Airbus Ventures, Mesh Ventures, Trousdale Ventures, NewSpace Capital, Woven by Toyota - Series B, Jun 18, 2024, $65M — Kleiner Perkins, Quanta Computer, Development Bank of Japan, L3Harris Technologies, Lavrock Ventures, Mesh Ventures, InMotion Ventures, Trousdale Ventures, Assembly Ventures, Matter Venture Partners - Series B, Feb 3, 2022, $60M — Kleiner Perkins, Franklin Templeton, Airbus Ventures, Lavrock Ventures, HEICO Investment Management, L3Harris Technologies, Inc., Forever Ventures - Series A, Jan 16, 2019, $8.5M — Kleiner Perkins, Analog Devices, Franklin Templeton, Airbus Ventures, Lavrock Ventures, Honeywell Ventures ## Investors - Kleiner Perkins (https://capitalatlas.ai/funds/kleiner-perkins) — Series A, Series B - Analog Devices — Series A - Franklin Templeton (https://capitalatlas.ai/funds/franklin-templeton) — Series A, Series B - Airbus Ventures (https://capitalatlas.ai/funds/airbus-ventures) — Series A, Series B, Series C - Lavrock Ventures (https://capitalatlas.ai/funds/lavrock-ventures) — Series A, Series B - Honeywell Ventures (https://capitalatlas.ai/funds/honeywell-ventures) — Series A - HEICO Investment Management — Series B - L3Harris Technologies, Inc. — Series B - Forever Ventures — Series B - Quanta Computer — Series B - Development Bank of Japan (https://capitalatlas.ai/funds/development-bank-of-japan) — Series B, Series C - L3Harris Technologies — Series B - Mesh Ventures (https://capitalatlas.ai/funds/mesh-ventures) — Series B, Series C - InMotion Ventures (https://capitalatlas.ai/funds/inmotion-ventures) — Series B - Trousdale Ventures (https://capitalatlas.ai/funds/trousdale-ventures) — Series B, Series C - Assembly Ventures (https://capitalatlas.ai/funds/assembly-ventures) — Series B - Matter Venture Partners (https://capitalatlas.ai/funds/matter-venture-partners) — Series B - Janus Henderson Investors — Series C - NewSpace Capital (https://capitalatlas.ai/funds/newspace-capital) — Series C, Series D, Debt - Woven by Toyota — Series C - Janus Henderson (https://capitalatlas.ai/funds/janus-henderson) — Series D, Debt - Export-Import Bank of the United States — Series D, Debt - Incharge Capital — Series D, Debt - Insight Partners (https://capitalatlas.ai/funds/insight-partners) — Series D, Debt - JPMorgan — Series D, Debt - Magnetar — Series D, Debt - Sands Capital — Series D, Debt - Sumitomo Corporation of Americas — Series D, Debt - AV — Series D, Debt - Woven Capital — Series D, Debt