Callan JMB names Andy Weigman SVP of Land and Acquisitions at Callan Power
CJMB•Weigman’s background
Weigman spent nine years at Northern Oil and Gas, joining in 2012 as an early team member alongside founder Mike Reger.
He sourced more than $1 billion of potential acquisitions across more than 900 wells, with 14 years of Williston Basin experience.
Appointment at Callan Power
Callan JMB named Andy Weigman senior vice president of land and acquisitions at Callan Power, effective on closing the Reger Oil asset deal.
The role spans oil and gas land, operations and acquisition functions, supporting a non-operated working interest strategy in the Williston Basin.




