Callan JMB Inc. (CJMB)

Callan JMB Inc. is a logistics company based in Spring Branch, Texas, that operates mainly through its subsidiary Coldchain Technology Services. It specializes in temperature-controlled shipping for the U.S. life sciences industry.

The company handles the transport of frozen and refrigerated materials such as cell and gene therapies, stem cells, vaccines, diagnostic samples, biopharmaceuticals and organs, supported by specialty temperature-regulating packaging and shipment monitoring technology. Callan JMB also provides emergency preparedness services, including managing medical equipment stockpiles and supporting state and local emergency responses. The company has additional, smaller interests outside logistics. Its common stock trades on Nasdaq under the ticker CJMB.