SCHEDULE 13G
EXHIBIT A
RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP
PARENT HOLDING COMPANIES OR CONTROL PERSONS:
Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.)
Berkshire Hathaway Inc.
GEICO Corporation
MedPro Group, Inc.
General Re Corporation
INSURANCE COMPANIES AS DEFINED IN SECTION 3(a)(19) OF THE ACT:
National Indemnity Company
Columbia Insurance Company
Cypress Insurance Company
Government Employees Insurance Company
The Medical Protective Company
Mount Vernon Fire Insurance Company
United States Liability Insurance Company
General Reinsurance Corporation
British Insurance Company of Cayman
Note: No Common Stock of Chevron Corporation is held directly by Berkshire Hathaway Inc. or by Warren E. Buffett, an individual who may be deemed to control Berkshire Hathaway Inc.