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StemRad
Wearable radiation protection shielding for bone marrow survival
Vitality Radar
Pillar Analysis
Strategic Assessment
Strategic Vector
StemRad is positioning itself as a niche radiation-protection specialist with a strong space-flight and emergency-response focus, leveraging the AstroRad vest and 360 Gamma products plus high-profile partnerships with NASA and Lockheed Martin.
Efficiency Ratio
With an 11-50 person team, its visible output in space missions, civilian products, and R&D suggests above-average resource-to-output efficiency, albeit with limited evidence of large-scale commercial penetration.
Evidence Signals
StemRad announced it raised $6 million in a Series C funding round led by investor Jeff Vinik, owner and chairman of the Tampa Bay Lightning.
StemRad partnered with Lockheed Martin, NASA’s prime contractor for the Orion capsule, to co-develop the AstroRad radiation protection vest for use in space missions.
NASA, the Israel Space Agency and the German Aerospace Center signed an agreement to test StemRad’s AstroRad radiation protection vest on the Artemis I mission as part of the Matroshka AstroRad Radiation Experiment.
StemRad’s AstroRad radiation protection vest was flown and tested aboard NASA’s Artemis I mission in late 2022 as a primary payload in the Matroshka AstroRad Radiation Experiment using female anthropomorphic phantoms Zohar and Helga.
The International Space Station National Laboratory’s magazine Upward highlighted the AstroRad vest, noting extensive testing through ISS experiments and design enhancements to safeguard astronauts from harmful solar radiation during deep-space missions.
StemRad made the 360 Gamma Civilian radiation shield commercially available, marketed as a wearable gamma radiation shield that protects stem-cell-rich bone marrow in the pelvic region and sold through online channels.
StemRad launched a dedicated shop page for the StemRad 360 Gamma Civilian unit, describing specifications and options such as Kevlar fabric upgrades for gamma radiation protection of the pelvic bone marrow.
Media coverage in August 2026 highlighted StemRad’s AstroRad vest as an Israeli radiation shield that could help pave the way for safer missions to the Moon and Mars, emphasizing the successful Artemis I test and international collaboration.
- About
- Manufactures personal protective equipment designed to selectively shield bone marrow from gamma radiation. The product line includes the 360 Gamma belt for first responders and the AstroRad vest for deep-space astronaut protection, utilizing ergonomic designs to maximize survival without restricting mobility.
- Relevancy
- Provides critical radiation protection for military personnel in nuclear environments and space operations. AstroRad vest protects astronauts during deep space missions, while 360 Gamma enables first responders to operate in radiological emergencies. Essential for nuclear incident response and space-based military operations.
- Tags
- #radiation-protection #AstroRad-vest #360-Gamma #space-missions #nuclear-emergency #first-responders #bone-marrow-protection #NASA-partnership