Space Commerce

CesiumAstro Acquires TXMission, a United Kingdom-based SmallSat Communications Company

By Keith Cowing
Press Release
January 17, 2023
Filed under , ,
CesiumAstro Acquires TXMission, a United Kingdom-based SmallSat Communications Company

CesiumAstro Inc., an industry leader in active phased array communications technology for space and airborne systems, announced today it has acquired TXMission Ltd., a United Kingdom-based communications company that develops software-defined radios and modems for satellites, ground stations, HAPS (high-altitude platform systems), and airborne platforms. Financial terms of the transaction were not disclosed.

Founded in 2018, TXMission (pronounced “transmission”) has a rich portfolio of field-proven communications waveforms and hardware products that will complement CesiumAstro’s product lines, including their Quest™ and Connect™ software-defined radios built for the satellite and ground station markets.

“TXMission’s modem capabilities are unrivaled, and together we can build a stronger end-to-end communications solution for our customers,” said Shey Sabripour, founder and CEO of CesiumAstro. “Acquiring TXMission provides a foundation for establishing an office in the United Kingdom, where we are investing to grow our presence.”

TXMission will become CesiumAstro’s first office in the United Kingdom, expanding the company’s ability to deliver mission-critical solutions to its European customers while gaining access to high-skill talent and manufacturing capability in the region.

“We are delighted to join CesiumAstro,” said TXMission’s CEO and Vice President of Engineering, Gianni Nannetti. “This is a mutually beneficial opportunity allowing us to grow our team, expand our capabilities, and continue building high-performance communications systems for our customers.”

Optimal Counsel LLP acted as legal advisor to CesiumAstro.

About CesiumAstro

Headquartered in Austin, Texas, with offices in Broomfield, Colorado and El Segundo, California, CesiumAstro builds high-throughput, plug-and-play active phased array communication payloads for airborne and in-orbit platforms. Cesium’s full-stack, multi-mission hardware and software products enable a range of commercial and defense objectives. For more information, visit:

About TXMission

TXMission is a New Space company that has developed an advanced software-defined radio (SDR), compatible ground equipment, and network management systems for the SmallSat and airborne communications markets. For more information, visit

Media Contacts

For CesiumAstro

Alexandra Johnson,

SpaceRef co-founder, Explorers Club Fellow, ex-NASA, Away Teams, Journalist, Space & Astrobiology, Lapsed climber.