Gregory Michael Hatfield

Rowan Cos., Inc. engages in the provision of contract drilling services to the oil and gas industry. The company was founded by Charles Rowan and Archibald Rowan in 1923 and is headquartered in Houston, TX.

Rowandrill LLC engages in the provision of offshore contract drilling services in the ultra-deepwater and shallow water jack-up market. The company was founded on July 28, 1972 and is headquartered in Houston, TX.

Part of Valaris Ltd., Rowan Drilling (U.K.) Ltd. is a British company that provides well drilling services. The company is based in Aberdeen, UK and was founded in 1977.

Part of Valaris Ltd., Rowan (UK) Resolute Ltd. provides business support services. The company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Renaissance Ltd. is a British company that provides drilling services. The company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Reliance Ltd. provides professional, scientific and technical services. The company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Relentless Ltd. is a British company that provides business support services. The company is based in London, UK and was founded in 2013.

Part of Valaris Ltd., Rowan No. The company is based in London, UK and was founded in 2012. 1 Ltd. is an investment holding British company.

Part of Valaris Ltd., Rowan No. The company is based in London, UK. 2 Ltd. functions as an investment holding British company.