
Thaddeus Medical Systems (TMS) develops advanced active cold chain technology to ensure the safe and effective delivery of temperature-sensitive medical products, including life-saving vaccines. Their flagship product, the Thaddeus Marathon, offers precise temperature control with three set points (-20°, 5°, 20° Celsius), AI-enabled logistics with real-time GPS and data monitoring, and infinite run time through swappable batteries and solar recharge. This technology eliminates product spoilage and passive packaging waste, providing secure, zero-waste, and high-performance cold chain solutions for pharmaceutical supply chains globally, especially in challenging last-mile delivery environments. The company is led by founders Dr. Steve Scully, MD, Ph.D., and Russell Sanders, a Thermo King Master Inventor, and emphasizes innovation, sustainability, and security in healthcare logistics.

Thaddeus Medical Systems (TMS) develops advanced active cold chain technology to ensure the safe and effective delivery of temperature-sensitive medical products, including life-saving vaccines. Their flagship product, the Thaddeus Marathon, offers precise temperature control with three set points (-20°, 5°, 20° Celsius), AI-enabled logistics with real-time GPS and data monitoring, and infinite run time through swappable batteries and solar recharge. This technology eliminates product spoilage and passive packaging waste, providing secure, zero-waste, and high-performance cold chain solutions for pharmaceutical supply chains globally, especially in challenging last-mile delivery environments. The company is led by founders Dr. Steve Scully, MD, Ph.D., and Russell Sanders, a Thermo King Master Inventor, and emphasizes innovation, sustainability, and security in healthcare logistics.
Headquarters: Rochester, Minnesota
Founded: 2015
Flagship product: Thaddeus Marathon active cold-chain refrigeration/heating device
Key tech/features: Active temperature control (-20°C, 5°C, 20°C), swappable batteries, solar recharge, GPS/data logging, AI-enabled logistics
Last disclosed funding: Convertible Note, Mar 2, 2021
Last-mile cold chain for temperature-sensitive pharmaceuticals, vaccines, and cell & gene therapies
2015
Administrative Services
“Raised multiple convertible-note and seed rounds; investors include MARL 5G Accelerator, Right Side Capital Management, Southern Minnesota Initiative Foundation (SMIF), Epicenter, Innova Memphis”