Callan JMB Inc. subsidiary Callan Power has appointed Andy Weigman as Senior Vice President of Land and Acquisitions, effective upon completion of an asset purchase from Reger Oil Inc. in North Dakota and Montana’s Williston Basin.
Weigman, who previously spent nine years at Northern Oil and Gas Inc. starting in 2012, brings 14 years of Williston Basin experience to the role. His background includes asset management, acquisition sourcing, and due diligence, as well as co-founding two non-operated oil and gas investment funds where he oversaw operations across more than 900 wells.
Mike Reger, President of Callan Power, said the appointment leverages a decade-long professional relationship. 'I have worked with Andy for close to a decade, and there is no one better to help build this business,' Reger stated. The acquisition from Reger Oil will add a non-operated working interest position in the Williston Basin, a structure that allows investors to acquire small stakes in multiple wells operated by third parties while contributing proportionate capital and receiving proportional production and cash flow.
Callan JMB describes itself as a diversified logistics and infrastructure provider serving healthcare, government, and commercial clients, with Callan Power representing its expansion into energy development.













