Greg O'Brien

Mr. O’Brien was appointed Chief Executive Officer in August 2024 and has spent his entire career in the oil and gas sector. Prior to his current role, Mr. O’Brien served as the Company’s Executive Vice President & Chief Financial Officer since 2016. He has also previously served as Director, Strategic Planning in charge of Shelf Drilling’s corporate development efforts. Mr. O’Brien joined Shelf Drilling from Lime Rock Partners, where he focused on oilfield services and exploration & production investment opportunities internationally. Before that, he held energy investment banking roles with J.P. Morgan and SunTrust Robinson Humphrey. Mr. O’Brien graduated from the McIntire School of Commerce at the University of Virginia.

David Mullen

Mr. Mullen has over 40 years’ experience in the oil services business and currently serves as the Executive Chairman of the Board of Directors. He previously served as Shelf Drilling’s Chief Executive Officer from October 2012 to August 2024. In addition to this, Mr. Mullen also serves as an Independent Director of Subsea 7 S.A. since April 2018, and Senior Independent director since January 2021.  

Previous assignments include CEO and director of Wellstream Holdings PLC, a UK listed company that designed and manufactured subsea pipeline products and provided subsea services and installation, Chief Executive Officer of Ocean Rig ASA, a Norwegian listed ultra-deep water drilling contractor. Mr. Mullen also had a 23-year career at Schlumberger, including as President of Oilfield Services for North and South America. Mr. Mullen received a B.A. in Geology & Physics from Trinity College Dublin and an M.Sc. Degree in Geophysics from University College Galway.

Ian Bagshaw

Mr. Bagshaw has over 25 years of experience in the legal world. He is the Founder of Bagshaw Advisory S.A. (BASA), Switzerland and advises on several current fundraisings for companies at Seed A, and B round stages. His focus is on growth companies within the “sustainable” space whose development is powered by the Energy Transition and/or regulatory change. Mr. Bagshaw is also the Chairman of Zero Gravity – a social mobility start-up based in London, a Board member of Unique Group –a global subsea service firm based in Dubai, UAE, and an advisory Board member of Form Ventures. He has worked with various law firms such as Eversheds Sutherland, Clifford Chance, and Linklaters where he built out a European Private Equity business and also achieved the highest Chambers (“1”) legal ranking. Before his retirement in 2021, Mr. Bagshaw joined White & Case as Global Co-Head of Private Equity where he led the build out of the global practice. Mr. Bagshaw received his Bachelor of Laws (LLB) at Sheffield University in 1993 and his Legal Practice Diploma from the University of York in 1994.

Rita Granlund

Ms. Granlund has over 35 years of audit experience, including 23 years as a partner in PwC. She is currently the CEO of AIF Depository AS in the Permian Group. At PwC, she was Territory Assurance Leader in PwC Norway for 6 years and industry leader in Transportation and Logistics for 13 years. Ms. Granlund has extensive audit and transaction experience from listed companies within various industries, including shipping and offshore. She has worked on many large and complex transactions, including acquisitions, business combinations, restructurings, initial public offerings, and comfort letter procedures. Ms. Granlund has completed INSEAD International Directors Programme with a Certificate in Corporate Governance and is a State Authorised Public Accountant (Norway).

Kurt Hoffman

Mr. Hoffman has worked on rigs around the world and has over 40 years’ experience in the global oil and gas drilling industry. He joined Shelf Drilling in October 2012. From August 2009 to April 2011, Mr. Hoffman was Senior Vice President and Chief Operating Officer of Seahawk Drilling, a Houston and Gulf of Mexico-based jack-up drilling provider where he was responsible for the company’s daily operations and strategic business plan implementation. From 1991 through August 2009, Mr. Hoffman spent 18 years with Noble Corporation where he held senior operational and executive roles, including Vice President of Triton Engineering Services. Mr. Hoffman received a B.S. degree from Southwest Texas State University.