| Dec 27, 2001 | Occidental Idles Deer Park, Texas Chlor-Alkali Facility |
| Dec 13, 2001 | J. Roger Hirl, President and Chief Executive Officer, Occidental Chemical Corporation, Announces Planned Retirement |
| Oct 17, 2001 | Occidental Petroleum Announces Third Quarter 2001 Earnings Before Special Items of $0.85 Per Share |
| Oct 10, 2001 | Occidental To Hold Earnings Conference Call |
| Sep 13, 2001 | Occidental Petroleum Declares Dividend |
| Jul 19, 2001 | Occidental Petroleum Announces Second Quarter 2001 Earnings Before Special Items of $1.25 Per Share: 34-Percent Higher than Second Quarter 2000 |
| Jul 18, 2001 | Occidental Sells Interest in Natural Gas Pipeline |
| Jul 12, 2001 | Occidental Petroleum Declares Dividend |
| Jul 11, 2001 | Occidental Sells Interest in Indonesian LNG Project |
| Jul 10, 2001 | Occidental to Hold Earnings Conference Call |
| May 21, 2001 | Occidental Chosen for Saudi Arabian Natural Gas Project |
| Apr 20, 2001 | Occidental Petroleum Will Reduce Debt by $1 Billion in 2001: CEO Expects Outstanding Financial Results This Year |
| Apr 20, 2001 | Occidental Petroleum Declares Dividend |
| Apr 18, 2001 | Occidental Petroleum Announces First Quarter 2001 Results |
| Apr 10, 2001 | Occidental to Hold Earnings Conference Call |
| Feb 8, 2001 | Occidental Petroleum Declares Dividend |
| Feb 5, 2001 | Occidental Replaces 119% of 2000 Oil and Natural Gas Production |
| Jan 24, 2001 | Occidental Petroleum Announces Fourth Quarter 2000 Results Earnings Increase 80-Percent Over 1999 Fourth Quarter |
| Jan 16, 2001 | Occidental Petroleum Acquires New Yemen Exploration Block |
| Jan 16, 2001 | Occidental To Hold Earnings Conference Call |
| Nov 16, 2000 | Occidental CEO Highlights Earnings Improvement and Debt Reduction at Meeting With New York Financial Analysts |
| Nov 9, 2000 | Occidental Petroleum Declares Dividend |
| Nov 1, 2000 | Occidental Completes Sale of Durez Phenolics Business |
| Nov 1, 2000 | Occidental Agrees to Farm out Interest in Ecuador |
| Oct 18, 2000 | Occidental Announces 2000 Third Quarter Results |
| Oct 16, 2000 | Occidental To Hold Earnings Conference Call |
| Sep 8, 2000 | Occidental Chemical, Sumitomo Bakelite Sign Non-Binding Letter of Intent on Durez Phenolics Sale |
| Jul 20, 2000 | Occidental Petroleum Declares Dividend |
| Jul 20, 2000 | Occidental Maintains Debt Reduction Momentum With Sale of Certain Interests In Gulf of Mexico |
| Jul 19, 2000 | Occidental Announces Record Earnings For Second Quarter |
| Jun 28, 2000 | Occidental, Olin To Form Chlor-Alkali Partnership |
| Jun 16, 2000 | Occidental Petroleum Corporation Explores Options to Exit Several Chemical Intermediate Businesses |
| May 1, 2000 | Occidental Appoints Head of Corporate Communications and Public Affairs |
| Apr 28, 2000 | Occidental Petroleum Expects to Maintain Strong Earnings Per Share in 2000 |
| Apr 28, 2000 | Occidental Petroleum Declares Dividend |
| Apr 25, 2000 | Occidental Petroleum to Redeem All Outstanding 11-1/8% Senior Debentures Due June 1, 2019 |
| Apr 24, 2000 | Occidental Petroleum Completes Purchase of Arco Long Beach |
| Apr 19, 2000 | Occidental Completes Acquisition of Altura Energy |
| Apr 19, 2000 | Occidental Petroleum Corporation Announces 2000 First Quarter Results |
| Apr 18, 2000 | Occidental Completes Canoxy Sale, Uses Proceeds for Altura Acquisition |
| Apr 14, 2000 | Occidental Names General Counsels for Oil and Gas Unit |
| Mar 29, 2000 | University of Kansas, Occidental Oil and Gas Sign Biodiversity Pact |
| Mar 8, 2000 | Occidental Agrees to Acquire Altura Energy |
| Mar 1, 2000 | Occidental Agrees to Sell Stake in CanOxy for Approximately $1.2 Billion Canadian |
| Feb 14, 2000 | Occidental Replaces 100% Of 1999 Oil & Gas Production, Increases Capital Spending Over 40% From 1999 Level |
| Feb 10, 2000 | Occidental Petroleum Declares Dividend |
| Jan 25, 2000 | Occidental Petroleum Announces Fourth Quarter 1999 Results |
| Jan 3, 2000 | Occidental, EOG Resources Swap Oil and Gas Assets |
| Dec 17, 1999 | Occidental Agrees To Sell Block In Peru |
| Dec 9, 1999 | Occidental Acquires Additional Exploration Rights Near Elk Hills |
| Nov 30, 1999 | Occidental Announces Two Debt Tender Offers, is Using All Proceeds from Chevron Settlement to Reduce Debt |
| Nov 30, 1999 | Occidental Petroleum Corporation Receives National Habitat Conservation Award |
| Nov 22, 1999 | OXY USA Announces Redemption Of 7 Per Cent Debentures |
| Nov 18, 1999 | Occidental Petroleum and Chevron Settle Cities Service Case |
| Nov 17, 1999 | Occidental Petroleum Agrees To Buy ARCO Long Beach Inc. |
| Nov 11, 1999 | Occidental Petroleum Declares Dividend |
| Oct 20, 1999 | Occidental Begins Production from New Qatar Field |
| Oct 19, 1999 | Occidental Petroleum Announces Third Quarter 1999 Results |
| Oct 14, 1999 | Occidental and Conoco Bring Major Cogeneration Facility On-Line |
| Aug 17, 1999 | Occidental Announces Redemption of $3.00 Cumulative CXY-Indexed Convertible Preferred Stock |
| Jul 28, 1999 | Occidental Reviewing its Equity Investment in Canadian Occidental |
| Jul 20, 1999 | Occidental Petroleum Corporation Announces 1999 Second Quarter Results |
| Jul 15, 1999 | Occidental Petroleum Declares Dividends |
| Jun 23, 1999 | Oklahoma Supreme Court Denies Rehearing on Occidental Award |
| May 27, 1999 | Occidental, Unocal Sign Share Purchase Agreements for Bangladesh and Yemen E&P Interests |
| May 21, 1999 | Occidental Signs New Agreements In Ecuador |
| May 3, 1999 | Occidental, Geon Complete Creation of PVC Venture |
| Apr 30, 1999 | Stockholders Elect Ronald Burkle to Occidental Board |
| Apr 30, 1999 | Occidental Holds Annual Meeting |
| Apr 29, 1999 | Occidental Petroleum Declares Dividends |
| Apr 27, 1999 | Occidental Petroleum to Effect a Partial Redemption of $68,653,000 11 1/8% Senior Debentures Due 2019 |
| Apr 20, 1999 | Occidental Petroleum Corporation Announces 1999 First Quarter Results |
| Apr 15, 1999 | Occidental Joint Venture to Explore For and Develop Gas in Northern Oman |
| Mar 22, 1999 | Occidental and Unocal Announce Startup of Bangladesh Gas Project |
| Mar 3, 1999 | High Court Upholds Award To Occidental Petroleum |
| Feb 18, 1999 | Occidental Announces Executive Changes |
| Feb 18, 1999 | Occidental Petroleum Declares Dividends, Sets Annual Meeting |
| Feb 17, 1999 | Occidental's Oil and Gas Reserves Increase |
| Jan 26, 1999 | Occidental Petroleum Corporation Announces 1998 Fourth Quarter Results |
| Jan 25, 1999 | Occidental Reduces 1999 Capital Spending |
| Jan 19, 1999 | Occidental Petroleum Simplifies Management Structure; President Also To Head Oil & Gas Subsidiary |
| Dec 10, 1998 | Occidental Creates High-Tech Exploration "Visualization Center" |
| Nov 19, 1998 | Refining Asset Mix To Strengthen Earnings Will Be 'Never-Ending,' Occidental CEO Says |
| Nov 12, 1998 | Occidental Petroleum Names Havert Vice President, Treasurer |
| Nov 12, 1998 | Occidental Petroleum Declares Dividends |
| Oct 21, 1998 | Occidental Petroleum Corporation Announces 1998 Third Quarter Results |
| Jul 29, 1998 | Occidental Agrees to Sell Dutch North Sea Holdings |
| Jul 23, 1998 | Occidental, Shell Agree to Swap Some Oil, Gas Holdings |
| Jul 20, 1998 | Occidental Petroleum Corporation Announces 1998 Second Quarter Results |
| Jul 15, 1998 | Occidental Elects Feick to Board of Directors |
| Jul 9, 1998 | Occidental Petroleum Declares Dividends |
| Jun 29, 1998 | Occidental Agrees to Sell Dutch North Sea Holdings |
| Jun 25, 1998 | Occidental, Geon Agree to Combine PVC Businesses |
| Jun 15, 1998 | Occidental Awarded New Exploration Block In Oman |
| Jun 5, 1998 | Occidental Chemical Presented with Sustained Excellence Award |
| May 15, 1998 | Equistar Chemicals Increases Synergy Opportunities With Completion of Transaction With Occidental |
| May 4, 1998 | Occidental Elects Executive Vice President |
| May 1, 1998 | Occidental Petroleum Declares Dividends |
| Apr 20, 1998 | Occidental Petroleum Corporation Announces 1998 First Quarter Results |
| Apr 15, 1998 | Occidental Completes Asset Sales Worth $376 Million |
| Mar 20, 1998 | Occidental at 95% of $4.7 Billion Asset Redeployment Target |
| Mar 11, 1998 | Occidental Agrees to Sell Oklahoma Oil Properties to Anadarko |
| Mar 5, 1998 | Occidental Agrees to Sell Some Texas Natural Gas Holdings |
| Feb 27, 1998 | Occidental Agrees to Sell Some Oklahoma, Kansas Properties |
| Feb 12, 1998 | Occidental Petroleum Declares Dividends, Sets Annual Meeting |
| Feb 11, 1998 | Occidental Announces Redemption of $3.875 Cumulative Convertible Preferred Stock |
| Feb 6, 1998 | Occidental Completes Sale of Interest in Venezuela Block |
| Feb 5, 1998 | Occidental Completes Purchase of 1-Billion-Barrel Elk Hills Field |
| Feb 4, 1998 | Occidental to Redeem $3.875 Voting Preferred Stock |
| Jan 30, 1998 | Occidental Completes Sale of MidCon |
| Jan 28, 1998 | Occidental Agrees to Sell Venezuela Oil Operation |
| Jan 26, 1998 | Occidental Petroleum Corporation Announces 1997 Fourth Quarter Results |
| Jan 21, 1998 | Occidental Agrees to Sell MidCon to KN Energy for $3.49 Billion in Cash Plus Assumption of $500 Million in Liabilities |
| Jan 19, 1998 | Occidental, Partners Sign Contracts For Three Blocks in Albania |
| Jan 8, 1998 | Power Units of Occidental and Conoco to Build Texas Cogeneration Facility |
