Billionaire Warren Buffett Raises Stake in Wells Fargo & Company (WFC) to 10%

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SIGNATURES

After
reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated this 28th day of March, 2016

/s/ Warren E. Buffett
Warren E. Buffett
BERKSHIRE HATHAWAY INC.
By: /s/ Warren E. Buffett
Warren E. Buffett
Chairman of the Board

BH FINANCE LLC, NATIONAL INDEMNITY COMPANY,

NATIONAL FIRE AND MARINE INSURANCE COMPANY,

COLUMBIA INSURANCE COMPANY, NEBRASKA

FURNITURE MART, INC., THE FECHHEIMER BROTHERS

COMPANY, PRECISION STEEL WAREHOUSE, INC.,

NATIONAL LIABILITY
& FIRE INSURANCE COMPANY,

CYPRESS INSURANCE COMPANY, NATIONAL

INDEMNITY COMPANY OF THE SOUTH, REDWOOD FIRE

AND CASUALTY INSURANCE COMPANY, GEICO

CORPORATION, GOVERNMENT
EMPLOYEES INSURANCE

CORPORATION, GENERAL RE CORPORATION, GENERAL

REINSURANCE CORPORATION, U.S. INVESTMENT

CORPORATION, MOUNT
VERNON FIRE INSURANCE

COMPANY, U.S. UNDERWRITERS INSURANCE COMPANY, UNITED STATES LIABILITY INSURANCE COMPANY, MEDICAL PROTECTIVE
CORPORATION, THE MEDICAL

PROTECTIVE COMPANY, CENTRAL STATES OF OMAHA

COMPANIES, INC., CENTRAL STATES INDEMNITY CO. OF

OMAHA,

ACME BRICK COMPANY PENSION TRUST, BENJAMIN

MOORE PENSION TRUST,
THE BUFFALO NEWS OFFICE

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