David M Ritter

Business Positions

Royal Dutch Shell Global oil and gas corp

• vice president ('04→'10)

Ernst & Young LLP One of the "Big Four" US accounting firms

• leader, downstream & supply chain consulting ('00→'04)

Board Memberships

Philadelphia Energy Solutions Carlyle- & Sunoco-owned refinery

• EVP & COO

Positions

Haymarket Group Boutique energy industry consulting firm

• president ('10→'14)