Our Team

Anthony is our President, Chief Executive Officer, Secretary and Chairman. Mr. Petrello has served as Nabors’ President and Chief Executive Officer since 2011 and as the Chairman of the Board of Nabors since 2012. Mr. Petrello has served as the President, Chief Executive Officer, Secretary and Chairman of NETC I since March 2021. Mr. Petrello serves as a director of Hilcorp Energy, one of the largest private E&P companies in the United States. In 2018, Mr. Petrello was the recipient of the Offshore Energy Center Pinnacle Award, recognizing outstanding individuals who have taken today’s leading-edge tools and technologies and applied them to real world challenges. Mr. Petrello is a coinventor on four patents for drilling rig substructures. Mr. Petrello brings an extensive and unique combination of strategic commercial, operational, technological and technical skills.

William is our Chief Financial Officer. Mr. Restrepo has served as Nabors’ Chief Financial Officer since March 2014. Mr. Restrepo has served as the Chief Financial Officer of NETC I since April 2021. Mr. Restrepo has extensive experience in the energy industry both domestically and internationally. This includes 20 years with Schlumberger in senior strategic, financial and operational management roles in Europe, the Middle East and South America. He previously served as Chief Financial Officer of Smith International and of Pacific Drilling. Mr. Restrepo brings a wealth of experience in capital markets transactions, mergers and acquisitions, strategic planning and international operations in the energy industry.

Guillermo is our Vice President—Energy Transition. Mr. Sierra has served as Vice President, Strategic Initiatives—Energy Transition at Nabors since April 2021. Mr. Sierra has served as the Vice President—Energy Transition of NETC I since April 2021. Mr. Sierra has extensive experience in energy, infrastructure, venture investments, energy technology and climate technology, logistics, capital markets and M&A given his work on over 60 transactions with a combined value of over $200 billion over the last approximately 17 years through various advisory and corporate strategy roles. Most recently, Mr. Sierra was a Partner at Blackline Partners from August 2019 to December 2020, serving as Executive Vice President, Head of Strategy for Blackline Midstream from August 2019 to March 2020 and in the same position for Blackline Cold Storage from March 2020 to November 2020. Mr. Sierra was not employed from December 2020 to April 2021. Prior to that, Mr. Sierra served as Managing Director, Head of North America Midstream Advisory at Macquarie Capital from September 2016 to December 2018 before taking a sabbatical from December 2018 to August 2019. Mr. Sierra’s earlier experiences include positions at Credit Suisse (Director, Head of MLP/Midstream M&A), USD Group LLC & USD Partners (VP, Chief Strategy Officer and Head of M&A), Evercore Partners (Vice President — Energy M&A), and Barclays Capital (as a member of the Global Natural Resources Group). Mr. Sierra is currently a Senior Advisor to the Chief Executive Officer, and board observer on the board of directors, of Sage Geosystems Inc., and is also a board observer on the board of directors of Quaise, Inc., Hephae Energy Technology and UCAP Power, Inc.