2018 Annual Report (PDF file)

2018 SEC Form 10-K (PDF file)

2018 Financial Statement XBRL files

•   brka-20181231.xml
•   brka-20181231.xsd
•   brka-20181231_cal.xml
•   brka-20181231_def.xml
•   brka-20181231_lab.xml
•   brka-20181231_pre.xml