Berkshire Hathaway INC (BRK-B) SEC Filings — 2018 0 SEC filings for Berkshire Hathaway INC (BRK-B) in 2018. FilingsNo filings found for BRK-B in 2018. ExploreAll BRK-B Filings · BRK-B 2017 · BRK-B 2019 · All 2018 Filings