BRK-B
Berkshire Hathaway has filed 1,001 documents with the SEC between 2016 and 2026. The most frequent type is insider trade (274 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Insider trade | 4 | 2018-05-16 | 2018-05-15 |
| Institutional holdings | 13F-HR | 2018-05-15 | 2018-03-31 |
| Activist ownership stake (update) | SC 13D/A | 2018-05-11 | - |
| Insider trade | 4 | 2018-05-10 | 2018-05-10 |
| Major company event | 8-K | 2018-05-08 | 2018-05-05 |
| Quarterly report | 10-Q | 2018-05-07 | 2018-03-31 |
| Passive ownership stake | SC 13G | 2018-04-20 | - |
| Activist ownership stake (update) | SC 13D/A | 2018-04-12 | - |
| Employee stock plan | S-8 | 2018-04-10 | - |
| Activist ownership stake (update) | SC 13D/A | 2018-04-06 | - |
| Activist ownership stake (update) | SC 13D/A | 2018-03-26 | - |
| Proxy statement | DEF 14A | 2018-03-16 | 2018-05-05 |
| Insider trade | 4 | 2018-03-12 | 2018-03-06 |
| Insider trade | 4 | 2018-03-02 | 2018-02-28 |
| Insider trade | 4 | 2018-02-28 | 2018-02-26 |
| Major company event | 8-K | 2018-02-27 | 2018-02-24 |
| Annual report | 10-K | 2018-02-26 | 2017-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2018-02-21 | - |
| Insider trade | 4 | 2018-02-15 | 2018-02-13 |
| Annual insider summary | 5 | 2018-02-14 | 2017-12-31 |
| Passive ownership stake | SC 13G | 2018-02-14 | - |
| Passive ownership stake | SC 13G | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-14 | - |
| Institutional holdings | 13F-HR | 2018-02-14 | 2017-12-31 |
| Passive ownership stake | SC 13G | 2018-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 2018-01-29 | - |
| New insider ownership | 3 | 2018-01-19 | 2018-01-09 |
| New insider ownership | 3 | 2018-01-18 | 2018-01-10 |
| Major company event (amended) | 8-K/A | 2018-01-12 | 2018-01-09 |
| Major company event | 8-K | 2018-01-10 | 2018-01-09 |
| Insider trade | 4 | 2018-01-03 | 2018-01-02 |
| Insider trade | 4 | 2017-12-11 | 2017-11-03 |
| Institutional holdings | 13F-HR | 2017-11-14 | 2017-09-30 |
| Quarterly report | 10-Q | 2017-11-03 | 2017-09-30 |
| Passive ownership stake (update) | SC 13G/A | 2017-09-08 | - |
| Institutional holdings | 13F-HR | 2017-08-14 | 2017-06-30 |
| Activist ownership stake | SC 13D | 2017-08-11 | - |
| Quarterly report | 10-Q | 2017-08-04 | 2017-06-30 |
| Insider trade | 4 | 2017-07-21 | 2017-06-26 |
| Insider trade | 4 | 2017-07-11 | 2017-07-10 |