FORM 10-K

Company

BERKSHIRE HATHAWAY INC

Filed

March 1, 2007

Period of Report

December 31, 2006

Accession Number

0000950134-07-004573

A 10-K is a company's comprehensive annual report, required by the SEC. It includes audited financial statements, a description of the business, risk factors, and management's discussion of results. Learn more about 10-K filings →