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| January 29, 2008 |
New E&P Project in Australia |
| December 11, 2007 |
Announcement of Executive Appointments |
| October 16, 2007 |
Notice Concerning the Amendment to the Forecast for Interim Business Performance |
| September 18, 2007 |
Announcement of Strategic Partnership Between Cosmo Oil Company, Limited and International Petroleum Investment Company |
| September 18, 2007 |
The Strategic Partnership between COSMO OIL COMPANY, LIMITED
and International Petroleum Investment Company and the Allotment of New Shares |
| September 18, 2007 |
Announcement of Offer of Shares to be Issued by Third-Party Allotment |
| September 18, 2007 |
Announcement of Change of Major Shareholders and "Other Related Companies" |
| September 18, 2007 |
Announcement of Adjustment of Conversion Price |
| April 17, 2007 |
Notice Concerning the Amendment to the Forecast for Full-Year Business Performance |
| April 6, 2007 |
Disaster-relief Donations for Victims of Earthquake/Tunami in the Solomon Islands |

| December 5, 2006 |
Mutual Utilization of New Facilities |
| November 28, 2006 |
Cosmo Oil Co., Ltd. Participates in Laffan Refinery Co., Ltd. |
| November 21, 2006 |
Investment in Sophisticated Oil Refineries and Entry into the Wholesale Business of CARB-diesel on the West Coast Area of the US |
| October 17, 2006 |
Notice Concerning the Amendment to the Forecast for Interim Business Performance |
| October 3, 2006 |
About Illegal Action in the Oil Refineries, the Resubmission of an Investigation Report on the Accident, and In-house Penalties |
| September 1, 2006 |
Administrative Penalties Handed Down by the Nuclear and Industry Safety Agency, METI |
| August 31, 2006 |
About the Results of our Investigation into the Improper Procedures taken contrary to the High-Pressure Gas Control Law at our Chiba Refinery in 1995 |
| August 4, 2006 |
Partial Revision to Investigation Report on the Accident at the Chiba Oil Refinery |
| May 19, 2006 |
Concerning fire in Chiba oil refinery (Tenth report) |
| May 16, 2006 |
Report on loss caused by the fire at our Chiba
oil refinery |
| May 9, 2006 |
Concerning fire in Chiba oil refinery (Ninth report) |
| April 28, 2006 |
Concerning fire in Chiba oil refinery (Eighth
report) |
| April 24, 2006 |
Concerning fire in Chiba oil refinery (Seventh
report, at 6:00 p.m. on April 24) |
| April 20, 2006 |
Concerning fire in Chiba oil refinery (Sixth report,
at 7:00 p.m. on April 20) |
| April 18, 2006 |
Concerning explosion and fire in the vicinity
of vacuum gas oil desulfurization unit in Chiba oil refinery (Fifth report, at
7:00 p.m. on April 18) |
| April 17, 2006 |
Concerning explosion and fire in the vicinity
of vacuum gas oil desulfurization unit in Chiba oil refinery on April 16 (Fourth
report, at 7:00 p.m. on April 17) |
| April 16, 2006 |
Concerning explosion and fire in the vicinity
of vacuum gas oil desulfurization unit in Chiba oil refinery (Third report, at
5:00 p.m.) |
| April 16, 2006 |
Concerning explosion and fire in the vicinity
of desulfurization unit in Chiba oil refinery (Second report, at 12:15 p.m.) |
| April 16, 2006 |
Concerning failure of desulfurization unit in
Chiba oil refinery (First report) |
| April 6, 2006 |
Commencement of Qatar Project Crude
Oil Production
Gas Injection ? Environmental Efforts |

| December 1, 2005 |
Cosmo Oil Supports Japan Concerts by Contemporary Music Ensemble "The Pearls Before Swine Experience"
"
From Sweden, the Peärls Before Swïne Experience -- 5 minutes of pearls of a new musical world from Scandinavia and Japan" |
| November 16, 2005 |
"Cosmo Fine Art Kids -- Courtyard Renovation Project" Art Communication Program for Children's Institutions Social Contribution Activity |
| October 31, 2005 |
Opening of Shanghai Office |
| October 18, 2005 |
Notice Concerning the Amendment to the Forecast for Interim Business Performance |
| September 16, 2005 |
News Concerning the Determination of Number of Issuing Shares Through Third-Party Allocation |
| September 8, 2005 |
Decontamination of the Gas Station Site in front of Toshima Housing Complex Completed |
| September 6, 2005 |
News Concerning the Decided Offering Price for Issuance and Offering of New Shares and Terms of Issue of 4th Unsecured Convertible Bond Type Warrant Bond |
| August 30, 2005 |
News Concerning the Issuance and Offering of New Shares and the 4th Unsecured Convertible Bond Type Warrant Bond |
| August 22, 2005 |
Cosmo Children's Earth School "Nature Art Workshop for Children : an orchestra of forest animals" by Jozef Wilkon, Polish illustrator of children's books Workshop Report |
| August 2, 2005 |
Cosmo Oil CSR Program: Cosmo Children's Earth School 2005 Report on the "13th Cosmo Waku-waku Camp" |
| May 30, 2005 |
Innovative Hair Growth Stimulant Developed:
Cosmo Oil and Dr. Ito to Jointly Pursue Commercialization |
| May 17, 2005 |
New Consolidated Medium-Term Management Plan (FY 2005-2007) |
| April 12, 2005 |
Dissolution of Subsidiary |
| April 4, 2005 |
Cosmo Oil Achieves Top Ranking in Environmental Ranking System as part of DBJ's "Loans for Promoting Environmentally Conscious Management" |
| March 31, 2005 |
Acquisition of Shares in Nippon Oil Corporation |
| March 1, 2005 |
Fuel Cell Field Tests to Begin LPG Reforming Type Stationary Fuel Cell System |
| February 10, 2005 |
Opening of First Joint Self-Service Station & Ministop Store |
| February 8, 2005 |
NAVI 2005 Training Program |
| February 7, 2005 |
Cosmo Oil Voted Asia-Pacific’s “Best Regional Jet Fuel Marketer” in U.S. publication on aviation fuel, “Armbrust Jet Fuel Report” |

| December 22, 2004 |
Results of Agronomical Surveys at the Gas Station Site in front of the Toyoshima Housing Complex |
| December 20, 2004 |
Cosmo Oil Sponsors "NGO Global Village" at EXPO 2005 AICHI |
| November 26, 2004 |
Commencement of Commercial Operation of Cosmo Oil Sakata Wind Power Plant |
| November 5, 2004 |
The Mid Niigata Prefecture Earthquake:Employees Donate for Disaster Relief
|
| October 27, 2004 |
Winners
of This Year's Technical Award Presented by the Japanese Society
for Chemical Regulation of Plants |
| October 22, 2004 |
Establishment of a Company to Produce and Distribute Products
Containing 5-Aminolevulinic Acid (ALA) |
| September 15, 2004 |
Strengthening of Ties between Cosmo Oil Co., Ltd. and Nippon Oil Corporation
~A cross-licensing agreement related to fuel oil quality patents has been made~ |
| August 31, 2004 |
Regarding “Shares transfer to Kashima Oil Co., Ltd.” |
| August 10, 2004 |
Report on the Cosmo Earth Conscious Act Clean Campaign on Mt. Fuji |
| August 9, 2004 |
Cosmo Children’ s Earth School 2004: Cosmo Oil Contributing to Society “12th Cosmo Waku Waku Camp” Report |
| August 4, 2004 |
Publication of the Cosmo the Card “Eco” Activities Statement 2003 |
| July 28, 2004 |
Decision on the Commercialization of Wind Power Generation in Sakata City, Yamagata Prefecture |
| July 9, 2004 |
Information on Cosmo Earth Conscious Act Clean Campaign in Mt. Fuji |
| June 8, 2004 |
Results of Investigation into Possible Leak of Customer Information |
| April 28, 2004 |
Agreement Entered into for the LNG Terminal Joint Venture |
| April 21, 2004 |
Possibility of Leak of Customer Information |
| April 1, 2004 |
Cosmo Oil New ALA Business Group to strengthen new business! On April 1st in R & D Department. |
| April 1, 2004 |
The first pilot shop, Lub. Oil Exchange Plaza “Mr.Lio” |
| March 29, 2004 |
Cosmo Oil Leases First Unit of Nissan’s X-TRAIL FCV |
| March 19, 2004 |
Decision of practical use in Chiba refinery Diesel oil desulfurization equipment of Diesel oil super depth desulfurization catalyst! Control of equipment investment by sulfur-free and using high efficiency catalyst |
| February 10, 2004 |
Cosmo Oil offers emission rights to the 2004 Formula Nippon - Eco-friendly motor racing without CO2 emissions - |
| January 28, 2004 |
Construction of an LNG Terminal at the Sakaide Refinery |
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