Hess, Occidental Petroleum were bankrupt Diamond Offshore's biggest customers in 2019Market Watch • 04/27/20
3 Big Stock Charts for Tuesday: Halliburton, Occidental Petroleum, and ChevronInvestorPlace • 04/21/20
Occidental shareholders get first say on Anadarko deal with vote on Berkshire financingReuters • 04/17/20
Occidental Petroleum CEO base salary rose 6.5% in 2019, total compensation grew 13%Market Watch • 04/17/20
Occidental’s Debt Payment in Stock to Warren Buffett Is Quite Costly (and Slippery)24/7 Wall Street • 04/15/20
Berkshire Hathaway to accept Occidental Petroleum’s common shares as quarterly dividendInvezz • 04/15/20