UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2020 For the transition period from to ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 1-9210 Occidental Petroleum Corporation (Exact name of registrant as specified in its charter) | State or other jurisdiction of incorporation or organi ...

Occidental Petroleum Corporation (NYSE:OXY) Q4 2020 Results Conference Call February 23, 2021 1:00 PM ET Company Participants Jeff Alvarez - VP, IR Vicki Hollub - President and CEO Rob Peterson - SVP and CFO Conference Call Participants Doug Leggate - Bank of America Brian Singer - Goldman Sachs Paul Cheng - Scotiabank Dan Boyd - Mizuho Securities Jeanine Wai - Barclays Raphaël DuBois - Societe Generale Phil Gresh - JP Morgan Operator Good morning, and welcome to the Occidental’s Fourth Quarter 2020 Earning ...

Fourth Quarter Earnings Conference Call Occidental Petroleum Corporation February 23, 2021 Cautionary Statements Forward-Looking Statements This presentation contains "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to statements about Occidental Petroleum Corporation's ("Occidental") expectations, beliefs, plans or forecasts. Forward-looking statements involve estimates, expectations, projectio ...

Occidental Petroleum Corp. (NYSE:OXY) Q3 2020 Results Conference Call November 10, 2020 11:00 AM ET Company Participants Neil Backhouse - Director, IR Vicki Hollub - President and CEO Rob Peterson - SVP and CFO Ken Dillon - President, International Oil and Gas Operations Conference Call Participants Devin McDermott - Morgan Stanley Jeanine Wai - Barclays Paul Cheng - Scotiabank Doug Leggate - Bank of America Brian Singer - Goldman Sachs Phil Gresh - JP Morgan Roger Read - Wells Fargo Operator Good morning a ...

Third Quarter Earnings Conference Call Occidental Petroleum Corporation November 10, 2020 Cautionary Statements Forward-Looking Statements This presentation contains "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to statements about Occidental Petroleum Corporation's ("Occidental") expectations, beliefs, plans or forecasts. Forward-looking statements involve estimates, expectations, projection ...

Occidental Petroleum Corp. (NYSE:OXY) Q2 2020 Earnings Call August 11, 2020 11:00 AM ET Executives Jeff Alvarez - Occidental Petroleum Corp. Vicki A. Hollub - Occidental Petroleum Corp. Robert Lee Peterson - Occidental Petroleum Corp. Analysts Brian Singer - Goldman Sachs & Co. LLC Doug Leggate - BofA Securities, Inc. Jeanine Wai - Barclays Capital, Inc. Neal Dingmann - Truist Pavel Molchanov - Raymond James & Associates, Inc. Paul Y. Cheng - Scotia Capital (USA), Inc. Philip M. Gresh - JPMorgan Securities ...

Second Quarter Earnings Conference Call Occidental Petroleum Corporation August 11, 2020 Cautionary Statements Forward-Looking Statements This presentation contains "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to statements about Occidental Petroleum Corporation's ("Occidental") expectations, beliefs, plans or forecasts. Forward-looking statements involve estimates, expectations, projections ...

Occidental Petroleum Corp (NYSE:OXY) Q1 2020 Earnings Conference Call May 6, 2020 11:00 AM ET Company Participants Jeff Alvarez - VP, IR Vicki Hollub - President & CEO Robert Peterson - SVP & CFO Conference Call Participants Paul Cheng - Scotiabank Muhammed Ghulam - Raymond James & Associates Douglas Leggate - Bank of America Merrill Lynch Brian Singer - Goldman Sachs Group Ryan Todd - Simmons Paul Sankey - Mizuho Securities Jeffrey Campbell - Tuohy Brothers Leo Mariani - KeyBanc Capital Markets Joshua Silv ...