Osterberg was previously with Vinson & Elkins for 30 years. He focuses on corporate and partnership taxation and international transactions, including advising corporates and individuals on mergers and acquisitions, tax-free reorganisations, corporate spin-offs and other divestitures, foreign operations including cross-border joint ventures with non-US partners, and inbound investment into the US by non-US investors.
He has extensive experience in providing energy-related tax transactions counsel to both domestic and international energy companies.