Tony Petrello has served as the Chairman of the Board of Nabors since 2012, and as a director since 1991. From 2003 to 2012, he served as the Deputy Chairman of the Board. Since 2011, Mr. Petrello has also served as President and CEO of Nabors and was President and Chief Operating Officer from 1991-2011. Mr. Petrello also serves as a Director of Hilcorp Energy Company and as an officer and Director of Nabors Energy Transition Corp. II and formerly served from 2021 to 2023 as an officer and Director of Nabors Energy Transition Corp. (NYSE: NETC), a special purpose acquisition company co-sponsored by Nabors, until the completion of its business combination with Vast Renewables Ltd. (NASDAQ: VSTE). He is also a member of the Board of Trustees of Texas Children's Hospital and an advocate for research and clinical programs to address the needs of children with neurological disorders. In 2018, Mr. Petrello was the recipient of the Offshore Energy Center Pinnacle Award, which recognizes leaders for advancing technologies that have significantly enhanced the oil and gas industry. Prior to this, in 2011, Mr. Petrello and his wife, Cynthia, received the Woodrow Wilson Award for Public Service from the Smithsonian Institution for their philanthropic efforts. Mr. Petrello holds a J.D. degree from Harvard Law School and B.S. and M.S. degrees in Mathematics from Yale University.