David J Theisen

David J. Theisen is an accomplished executive-level tax professional with extensive experience in developing and managing high-performing tax departments. They have held positions as Tax Manager at Arthur Andersen LLP and Senior Tax Manager at Deloitte Tax LLP, where they managed relationships with various clients and provided tax compliance services. As the Senior Director & Head of Tax at Copano Energy, they implemented efficient processes and minimized tax liabilities while leading the department through significant growth. Currently, David serves as the Tax Lead for US Advice at Shell. David holds a Bachelor of Science in Biology and completed coursework equivalent to a degree in Accounting from Creighton University.