Diamond Offshore Drilling, Inc. (Diamond Offshore) announced that it has executed a two-year contract extension with Anadarko Petroleum Corporation, a whollyowned subsidiary of Occidental, in the U.S. Gulf of Mexico for the Ocean BlackHawk, commencing in November 2024 in direct continuation of the rig’s current contract. This contract extension represents approximately $350 million dollars of additional backlog, excluding any managed pressure drilling services, and replaces the one-year priced option that was agreed in May 2023. Anadarko retains three one-year unpriced options.

Bernie Wolford, Jr., President and Chief Executive Officer, commented, “This extension is a testament to the safe performance of our crews and provides further visibility to our earnings and cash flow streams for 2025 and 2026. Combined with our previous awards, this brings our total contract backlog to approximately $2.1 billion.”

About Diamond Offshore

Diamond Offshore(NYSE: DO) is a leader in offshore drilling, providing innovation, thought leadership and contract drilling services to solve complex deepwater challenges around the globe.

About Occidental

Occidental (NYSE: OXY) is an international energy company with assets primarily in the United States, the Middle East and North Africa. We are one of the largest oil and gas producers in the U.S., including a leading producer in the Permian and DJ basins, and offshore Gulf of Mexico. Our midstream and marketing segment provides flow assurance and maximizes the value of our oil and gas. Our chemical subsidiary OxyChem manufactures the building blocks for life-enhancing products. Our Oxy Low Carbon Ventures subsidiary is advancing leading-edge technologies and business solutions that economically grow our business while reducing emissions. We are committed to using our global leadership in carbon management to advance a lower-carbon world.