By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
Over the last 12 months, one Berkshire Hathaway Inc company insiders bought shares in open-market trades, about $501,000 in total, and none of them sold.
O'Sullivan Michael J. (Officer) made the biggest buy, worth around $226,000.
2 quarters in a row of net buying by insiders. Insiders bought in 2 of the last 7 full quarters. 10 investment managers listed BRK.B in their latest 13F filings (Q2 2026); more funds bought than sold. Members of Congress reported 72 trades in BRK.B over the past two years (22 members).
Are insiders buying or selling BRK.B stock?
In the last 12 months Berkshire Hathaway Inc insiders made open-market purchases worth about $501,000 and sales worth about $0. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in BRK.B?
The most recent open-market insider trade in BRK.B was filed on 2026-08-13.
How many institutions own BRK.B?
10 investment managers reported holding BRK.B in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded BRK.B?
Yes. Members of Congress reported 72 trades in BRK.B over the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).