Our Team

Our team’s success is fueled by their passion, expertise, and dedication. With a blend of industry veterans, experienced professionals, and innovative strategists, we combine a rich wealth of knowledge and a collective dedication to achieving excellence.

Management Team

Brian Sellers - President

Brian serves as President of Springbok Energy after joining the team in 2013.
He is responsible for defining target areas of acquisitions, along with asset management and investor communication. Prior to joining Springbok, Brian worked for an international E&P company, Encana Oil and Gas, where he served in several engineering capacities, including drilling, production, and reservoir for a number of unconventional shale plays.  Mr. Sellers holds a BS in Chemical Engineering from the University of Oklahoma and an MBA from Southern Methodist University.

Michael Heldoorn - Vice President of Business Development

Michael serves as Vice President of Business Development for Springbok Energy and joined the Company in 2007.  Michael began as a landman in 2007 and immediately became the Company’s top producer taking leases in the Barnett Shale.  Michael transitioned that same success to mineral buying in 2009 as the Company shifted its focus to the minerals space.  Since 2012, he has been responsible for leading the Company’s grassroots acquisitions effort in several major basins. Michael holds a BA from Baylor University in Communications.

Brett Braun, CPA - Chief Financial Officer

Brett serves as Springbok Energy’s Chief Financial Officer.  He joined the company in 2016.  Prior to becoming Chief Financial Officer, he held the positions of Assistant Controller and Controller.  Brett is responsible for financial planning, financial reporting, tax, accounting and other administrative functions.  Prior to joining Springbok, he worked in the accounting department at TransAtlantic Petroleum, an international E&P company, after beginning his career at Grant Thornton.  Brett is a CPA and holds a BS and MS in Accounting from Oklahoma State University.

Daniel Hass - Vice President of Engineering

Daniel serves as Vice President of Engineering and joined Springbok in 2018.  Daniel is responsible for all engineering evaluations, analyzing basins, directing teams on the areas of acquisition and maintaining reserve database.  His background is in both conventional and unconventional plays across the US with over 10 years of industry experience in reservoir engineering, reserve estimation and economics, A&D, well performance analysis, production engineering and oilfield operation.  He brings a wide range of experience having served in various engineering roles in multiple basins across the United States.  Daniel holds a MSc in Petroleum Engineering from the University of Louisiana at Lafayette.

Acquisition Team

Connor Carpenter

Acquisition Team Lead

Garrett Ensmann

Acquisition Specialist

Kyle Toepke

Acquisition Specialist

Nancy Mathieu
Nancy Mathieu
2024-04-02
Over the past several months I have been dealing with Sprinkbok Energy, first with Michael and later with Connor. I found both to be very knowledgeable, personable and honest throughout the entire negotiation process and final closing . I have received numerous offers over the past several years but it was obvious most were lowballing but I did not feel that way with Springbok. I would highly recommend them if you are looking to sell your mineral rights.
Rodney McKinley
Rodney McKinley
2024-03-19
Worked with Michael, who made the process simple. Received money in a timely manner. Would do business with him in the future.
Ben Helms
Ben Helms
2024-03-01
The South Africa national rugby union team commonly known as the Springboks, is the country's national team governed by the South African Rugby Union. The Springboks play in green and gold jerseys with white shorts. Their emblem is a native antelope, the Springbok, which is the national animal of South Africa.
Chris Rasmussen
Chris Rasmussen
2024-02-29
I highly recommend choosing Springbok Energy for selling your mineral rights. Our Springbok Energy representative was thorough, caring, and quick to respond respectfully to all our myriad of questions and concerns. He seemed to genuinely care about us. We feel like we gained a new friend, The whole process was extremely quick from start to finish. Although we were presented with other options from a number of other energy companies, we are incredibly happy we chose to accept the offer from Springbok Energy.
Mary Rich
Mary Rich
2024-02-28
Enjoyed working on the transaction with Michael. It was fast and he made it so easy. Thanks Michael, Bruce Rich
Tammy Lee
Tammy Lee
2024-02-27
The process was quick and easy. Michael was very knowledgeable and helpful - very easy to work with.
Eunice Ryan
Eunice Ryan
2024-02-26
In my recent transaction working with Michael Heldoorn was an experience whre I found him knowledgeable, kind, courteous, and integrity was exhibited. The transaction was completed with my feeling very satisfied. I certainly feel he earned more stars than I can exhibit!
Sophia Livolsi
Sophia Livolsi
2024-02-23
I cannot express my gratitude enough for the Springbok Energy team. Like many mineral owners do, I had received calls from companies looking to purchase my rights for a while, and I just didn't know who I could trust and had reservations on starting the process. However, Springbok was incredibly easy to work with, honest, helpful in answering my questions, and made sure the entire process was smooth. Brian, Michael, and Garrett were my direct points of contact and really took the time to work with me and were always a joy to speak with. I am so glad I worked with them and would give a 10 star review if I could!
Wayne Aamoth
Wayne Aamoth
2023-12-12
We recently worked with Springbok Energy on selling some mineral acres. We were initially contacted by Connor, Connor was excellent to work with and he helped guide us through the initial process. We then worked with Michael on purchase and deed documents required to complete the process. Michael did an excellent job explaining all options and processing closing documents for the family. Michael and staff did exactly what they said they would do and did it in an appropriate time frame. We highly recommend Springbok Energy if you are looking to sell your mineral acres.