Diamond Offshore Drilling, Inc. - 1995 dated Specimen Stock Certificate

Specimen Stock printed by American Bank Note Company. Diamond Offshore Drilling, Inc. serves as a contractor for offshore drilling operations. The company is based in Katy, Texas, United States, and maintains significant offices in Australia, Brazil, Mexico, Scotland, Singapore, and Norway. It operates a fleet of 15 drilling rigs, which includes 11 semi-submersible platforms and 4 drillships. In 2019, the majority of the company's revenue was generated from Hess Corporation (28.9%), Occidental Petroleum (20.6%), Petrobras (19.5%), and BP (3.1%). Notably, operations within the United States contributed to 52.5% of the company's total revenues for that year. In the early 1960’s, Brewster-Bartle, an onshore drilling firm, went bankrupt. In 1964, Don McMahon purchased Brewster-Bartle from its banking creditors and established Diamond M Drilling Company, named after his ranch, Diamond M Acres, located near Simonton, Texas. This company subsequently expanded into the offshore drilling sector.