BRK-B Insider activity — how to read the signals
Insider buying and selling is noisy — executives sell for taxes, diversification, and life events. But clusters of insider buying, or a sudden exodus, can be a signal. This page shows the BRK-B insider research workflow.
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Berkshire snapshot (2026-08-28)
| Snapshot | 2026-08-28 · source: yahoo |
|---|---|
| Market | BRK-B |
| Sector | Financials |
| Last price | $503.70 |
| Signal | LONG · uPnL +3.7% |
| Total return | -7.2% |
What to check in insider filings
- Open-market purchases — CEO/CFO buying with personal cash is the strongest insider signal.
- Cluster buying — multiple insiders buying within days of each other is stronger than one.
- Option exercises vs open-market buys — only open-market purchases with personal cash count.
- Rule 10b5-1 plans — pre-scheduled sales are noise; discretionary sales are signal.
Sources: SEC EDGAR (US), HKEX disclosures (HK), exchange filing systems for A-share/KR/India.
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FAQ
Who are the major BRK-B institutional holders?
Check the latest 13F filings on SEC EDGAR (for US stocks) or the exchange's institutional ownership disclosures. The Balance Labs BRK-B brief tracks institutional quality as part of the fundamental assessment.
What does insider selling at Berkshire mean?
Insider selling has many causes (taxes, diversification, estate planning) and is weak as a standalone signal. What matters more: is the CEO/CFO buying with their own money? Are multiple insiders buying simultaneously? Clusters of open-market buys are the stronger signal.
Should I follow insider trades on BRK-B?
Use insider activity as one input, not the thesis. The Balance Labs workflow checks insider behaviour as a supporting data point within the broader quality and valuation assessment — never as a standalone buy/sell reason.
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