About Cesium Astro
Cesium Astro is a company based in Austin (United States) founded in 2017 by Shey Sabripour. Cesium Astro has raised $426.24 million across 8 funding rounds from investors including Honeywell, L3Harris and Kleiner Perkins. The company has 141 employees. Cesium Astro has completed 2 acquisitions, including TXMission and VidRovr. Cesium Astro offers products and services including Element Satellite Multi-Beam Payloads, Vireo Transceiver, Skylark Single-Beam Payloads, Nightingale, and Software-Defined Radio VPX. Cesium Astro operates in a competitive market with competitors including Oxford Space Systems, Mynaric, SatixFy, Akash Systems and Phasor Solutions, among others.
- Headquarter Austin, United States
- Employees 141
- Founders Shey Sabripour
- SectorsAerospace, Defense & Maritime
- Email••••••••
- Website cesiumastro.com
- Social LinkedIn X
- Legal Name Cesiumastro, Inc.
Products & Services of Cesium Astro
Cesium Astro offers a comprehensive portfolio of products and services, including Element Satellite Multi-Beam Payloads, Vireo Transceiver, Skylark Single-Beam Payloads, Nightingale, and Software-Defined Radio VPX.
High-throughput systems for satellite data transmission.
Multi-beam device for dynamic frequency allocation in space.
Single-beam solutions for airborne communication needs.
Modular kit for software-defined radio applications.
Scalable radio for high-throughput defense communications.
Funding Insights of Cesium Astro
Cesium Astro has successfully raised a total of $426.24M across 8 strategic funding rounds. The most recent funding activity was a Series C round of $270 million completed in February 2026. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $426.24M
- Total Rounds 8
- Last Round Series C — $270M
- First Round $1.75M
(Jul 2017)
- Investors Count 22
All 8 funding rounds of Cesium Astro with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Feb 2026 | $270M | Series C | – | Trousdale Ventures | |
| Jan 2026 | $200M | Debt – Conventional | – | – | |
| Jan 2024 | $65M | Series B | – | Trousdale Ventures | |
| Jan 2023 | $2.09M | Series B | – | – | – |
| Mar 2022 | $75M | Series B | – | Airbus Ventures, Forever Ventures | |
| Oct 2020 | $14M | Debt – Conventional | – | – | – |
| Jan 2019 | $12.4M | Series A | – | Airbus Ventures | |
| Jul 2017 | $1.75M | Seed | – | – | – |
22 investors in total: 22 institutional.
Investors in Cesium Astro
Cesium Astro has secured backing from 22 investors, including venture fund and institutional investors. Prominent investors backing the company include Honeywell, L3Harris and Kleiner Perkins.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Early-stage tech startups are funded in mobility and climate sectors. | – | trousdale.vc | Los Angeles, United States | |
Venture capital firm investing in early-stage tech startups | 1972 | kleinerperkins.com | Menlo Park, United States | |
Early-stage tech-focused VC investment company investing primarily in the US | – | lavrockvc.com | Mclean, United States | |
Venture capital and startup studio firm focused on transportation tech companies | – | inmotionventures.com | London, United Kingdom | |
Matter Venture Partners is focused on funding HardTech startups. | – | mattervp.com | Silicon Valley, United States | |
Early-stage tech investments are made in US and Taiwan startups. | – | mesh.vc | Taipei, Taiwan | |
- | – | assemblyventures.com | - | |
Early-stage tech investments are made across US, Europe, and Asia. | – | airbusventures.vc | Menlo Park, United States | |
- | – | foreverventures.tcc.mode | - | |
- | – | woven.vc | - |
Investor details for Cesium Astro
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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People of Cesium Astro
77 people are tracked at Cesium Astro (12 in leadership, 3 in board & advisors, 62 in team); the tracked headcount is 141.
| Name | Role | Group |
|---|---|---|
Shey Sabripour | Founder & CEO | Leadership |
Janet Bawcom | Vice President And General Counsel | Leadership |
Thomas Magesacher | Chief Scientist | Leadership |
Peter Manternach | VP Of Human Resources | Leadership |
Chris Pappas III | Chief Revenue Officer | Leadership |
James Carwell, MBA, BSEE | VP Of Engineering And Operations | Leadership |
James Mcknight | Director Of Engineering | Leadership |
Jared Clarke | Director Of Engineering | Leadership |
Don Wolf | Director Of IT And Infosec | Leadership |
Iraklis Hatziathanasiou | Senior Director Of Business Development | Leadership |
Dan White | Vice President Of Programs | Leadership |
Barry Behnken | Sr. Director, Business Development | Leadership |
Lisa Porter | Advisor | Board & advisors |
Mike Griffin | Advisor | Board & advisors |
Hinrich J. Woebcken | Advisor | Board & advisors |
Isaac Wanamaker | Senior Mechanical Spacecraft Engineer | Team |
Christopher Perez | Principal FPGA Engineer II | Team |
Abraham Wolfgang | Principal Hardware Design Engineer | Team |
Susan Tower | Principal Spacecraft Mechanical Engineer II | Team |
Grant Borcher | Senior Electronics Manufacturing Engineer | Team |
57 more people are available in the full profile.
Complete people profiles for Cesium Astro
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Investments & Acquisitions by Cesium Astro
Cesium Astro has strategically engaged in corporate development activities, having acquired 2 companies. Notable acquisitions include TXMission and VidRovr.
| Company Name | Description | Domain | Location | Founded | Acquired | Amount |
|---|---|---|---|---|---|---|
Video content is indexed, searched, and recommended via AI technologies. | vidrovr.com | New York, United States | 2016 | Feb 2026 | •••• | |
Small-sat modems and satellite communications solutions are manufactured and supplied. | txmission.com | Santa Barbara, United States | 2000 | Jan 2023 | •••• |
Complete acquisition details for Cesium Astro
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Timeline of Cesium Astro
Competitors of Cesium Astro
Cesium Astro operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Oxford Space Systems, Mynaric, SatixFy, Akash Systems and Phasor Solutions, among others.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| oxford.space | 2013 | Harwell, United Kingdom | $30.99M | 69 | Satellite antenna systems are manufactured using proprietary composite materials. | |
| mynaric.com | 2009 | Munich, Germany | $2.59M | 213 | Satellite communication systems are developed using optical wireless technologies. | |
| satixfy.com | 2012 | Rehovot, Israel | $25M | – | Provider of satellite communication SOCs and products | |
| akashsystems.com | 2016 | San Francisco, United States | $17.6M | 16 | Small LEO satellites, transmitters, and RF power amplifiers are developed. | |
| phasorsolutions.com | 2005 | London, United Kingdom | $19.21M | 42 | Provides comprehensive solutions in phased array antenna technology for satellite communication. | |
| milexia.com | 2006 | Saint-aubin, France | – | – | High-tech components, systems, and scientific instrumentation are provided across sectors. | |
| astrogatelabs.com | 2017 | Bengaluru, India | $1.93M | 1 | Optical communication systems for space applications are manufactured. | |
| reorbit.space | 2019 | Helsinki, Finland | $60.21M | – | Software-enabled satellites are manufactured for secure space communications. | |
| lucix.com | 1999 | Camarillo, United States | $3M | – | Satellite hardware components are supplied to major OEMs by Lucix. |
Detailed competitors of Cesium Astro
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Web traffic of Cesium Astro
The website of Cesium Astro (cesiumastro.com) receives about 20.1K visits a month.
- Monthly visits20.1K
▲ 86.9% vs previous month
Websites whose visitors overlap most with Cesium Astro. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
jobs.lever.co | jobs.lever.co | 100% | – | #4,880 | – |
| indeed.com | 87% | 416.4M | #70 | View details | |
austinaerotech.com | austinaerotech.com | 28% | – | – | – |
| austinexecutiveairport.com | 28% | 4.4K | #4,139,897 | View details | |
saturnaviation.com | saturnaviation.com | 27% | – | #11,782,657 | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 6 similar websites and full traffic analytics for Cesium Astro
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 6 similar websites
- Audience overlap
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Verified entity values are shown only after access is granted.
Latest news on Cesium Astro
Complete news archive for Cesium Astro
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Similar companies to Cesium Astro
10 companies that operate in the same segment as Cesium Astro (Space Research & Technology), ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
AI-based software suites are developed for navigation applications. | 1893 | Paris, France | – | USD 26.01 B | 83,020 | |
Cloud-based satellite imagery data and analytics solutions are provided. | 2010 | San Francisco, California, United States | USD 666.69 M | USD 307.73 M | 970 | |
Astra is engaged in providing space launch services. | 2016 | Alameda, California, United States | USD 136.93 M | – | – | |
Reusable launch vehicles for large payloads are developed and launched. | 2002 | Hawthorne, California, United States | USD 11.86 B | – | 13,612 | |
Reusable launch vehicles for small satellite payloads are provided. | 2006 | Long Beach, California, United States | USD 215 M | USD 436.21 M | 2,100 | |
Provider of space launch services using Vikram series launch vehicles | 2018 | Hyderabad, Telangana, India | USD 99.84 M | USD 3.39 M | 247 | |
Satellite-based imaging solutions are provided using synthetic aperture radar. | 2016 | Palo Alto, California, United States | USD 233.99 M | – | 191 | |
AI and microsatellite-based imaging solutions are developed for data monitoring. | 2014 | Espoo, Finland | USD 1.16 B | – | – | |
Satellite hardware is provided for space data constellations. | 2013 | Irvine, California, United States | USD 136 M | – | – | |
Private aerospace manufacturing and commercial launch solutions are provided. | 2017 | Chennai, Tamil Nadu, India | USD 72.14 M | – | 241 |
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Frequently Asked Questions about Cesium Astro
Cesium Astro was founded in 2017.
Cesium Astro is headquartered in Austin, United States. It is registered at Austin, Texas, United States.
Shey Sabripour is the current CEO of Cesium Astro. They have also founded this company.
Cesium Astro is a funded company, having raised a total of $426.24M across 8 funding rounds to date. The company's 1st funding round was a Seed of $1.75M, raised on Jul 2017.
Cesium Astro has 141 employees.
Cesium Astro was founded in 2017 in Austin, United States, focusing on the aerospace sector. Communication systems for satellites, unmanned aerial vehicles, and launch vehicles are provided through a specialized platform. A software-defined Ka-Band active phased array antenna, equipped with embedded channelizers and power electronics, is offered to support these applications. Operations emphasize hardware and software integration for space and aerial technologies.
Cesium Astro's top competitors include Mynaric, Oxford Space Systems and ReOrbit.
Cesium Astro offers Element Satellite Multi-Beam Payloads, Vireo Transceiver, Skylark Single-Beam Payloads, Nightingale, and Software-Defined Radio VPX.
Cesium Astro has 22 investors. Key investors include Honeywell, L3Harris, Kleiner Perkins, Analog Devices, and Franklin Templeton.
Cesium Astro operates through Cesiumastro, Inc..