13G Filing: Berkshire Hathaway and Liberty Media Corp (LSXMA)

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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

INSURANCE COMPANIES AS DEFINED IN SECTION
3(a)(19) OF THE ACT:

National Indemnity Company

Government
Employees Insurance Company

GEICO Indemnity Company

GEICO
Advantage Insurance Company

National Fire & Marine Insurance Company

EMPLOYEE BENEFIT PLANS IN ACCORDANCE WITH § 240.13d-1-(b)(1)(ii)(F)

GEICO Corporation Pension Plan Trust

Johns Manville Corporation
Master Pension Trust

BNSF Master Retirement Trust

General
Re Corp. Employee Retirement Trust

Lubrizol Corp. Master Trust Pension

Benjamin Moore & Co. Revised Retirement Income Plan

Buffalo News Editorial Pension Plan

Buffalo News Office Pension
Plan

Berkshire Hathaway Consolidated Pension Plan

Precision
Castparts Corp. Master Trust

OTHER MEMBER OF FILING GROUP

R. Ted Weschler

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