Quadruped Robots Companies
Quadruped robotics companies build four-legged robots for mobility, inspection, research, security, industrial operations, and field robotics.
Comparison Table
This table is designed for quick research: location, stage, known signals, and open questions to verify.
| Company | HQ | Founded | Funding Stage | Known Signals | Open Questions |
|---|---|---|---|---|---|
| Ghost Robotics | Philadelphia, Pennsylvania, United States | 2015 | Acquired (majority stake) | Ghost Robotics founded; First defense contract and venture funding | Will Ghost Robotics reach profitability and complete LIG Nex1's planned 2029 U.S. IPO?; How much of Ghost Robotics' business now involves weaponized or border-enforcement applications, and how does that shape its public reputation? |
| RIVR | Zurich, Zurich, Switzerland | 2023 | Acquired (by Amazon) | Early legged-robot AI research at ETH Zurich; RBR50 innovation award | What did Amazon actually pay to acquire RIVR, and was it a full acquihire or a larger strategic purchase?; Will RIVR's existing commercial partnerships (Veho, Just Eat Takeaway, Swiss Post, Migros Online) continue now that RIVR is owned by Amazon, a competitor to some of these companies in logistics and delivery? |
| Tombot | Santa Clarita, California, United States | 2017 | Series A | Tombot founded; Seed round closes | Will Jennie actually achieve FDA medical device clearance, and on what timeline?; Can Tombot convert its large pre-order waitlist into paying customers once shipments begin? |
| Unitree Robotics | Hangzhou, Zhejiang, China | 2016 | Pre-IPO (Series C) | Unitree Robotics founded; Humanoid robots introduced | How much of Unitree's humanoid robot revenue comes from research institutions and universities buying low-cost platforms versus industrial or commercial end customers?; Will Unitree's Shanghai STAR Market IPO complete as filed, and what will its final valuation and public float be? |
Directory
| Company | Categories | Headquarters | Founded | Funding |
|---|---|---|---|---|
| Ghost Robotics Ghost Robotics builds the Vision 60, a rugged quadruped robot used by military, security, and government agencies; majority-owned by South Korea's LIG Nex1 since 2024. | Philadelphia, Pennsylvania, United States | 2015 | Acquired (majority stake) | |
| RIVR RIVR (formerly Swiss-Mile) builds wheeled-legged quadruped robots for doorstep delivery, spun out of ETH Zurich; acquired by Amazon in March 2026. | Zurich, Zurich, Switzerland | 2023 | Acquired (by Amazon) | |
| Tombot Tombot builds Jennie, a lifelike robotic Labrador puppy designed to provide therapeutic companionship for seniors with dementia and others who cannot keep a live pet. | Santa Clarita, California, United States | 2017 | Series A | |
| Unitree Robotics Unitree Robotics makes quadruped and humanoid robots in Hangzhou, China, and is pursuing a Shanghai STAR Market IPO after rapid humanoid robot revenue growth. | Hangzhou, Zhejiang, China | 2016 | Pre-IPO (Series C) |