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Recent SEC activity for BRK-B, refreshed from the StockSurf ledger every 30 minutes.
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Berkshire Hathaway Inc. SEC filings and 10-K intelligence
Free source-linked filing history for BRK-B: recent 10-K, 10-Q, and 8-K activity, accepted timestamps, signal explanations, filing-type context, and direct SEC links. Use this page as a research starting point; paid alerts are optional if you want this monitored.
Latest signal
10-K filed 2026-03-02
Data source: Mongo-backed StockSurf SEC ledger. Page cache revalidates every 30 minutes to match the ingestion cadence.
Filings loaded: 3
Tracked forms: 10-K
Latest accepted: 2026-03-02
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What this page gives away for free
Source-first trail
Direct SEC filing and index links keep the page auditable instead of asking readers to trust a black-box summary.
7/10 top signal
Deterministic scores and reasons help prioritize filings that deserve a closer human review.
Research brief
How to read the current BRK-B filing trail
Start with the latest filing source, then compare the form type against the context below. Use signal scores as triage, not advice: high scores mean “review sooner,” not “buy or sell.”
10-K
Annual report with audited financials, risk factors, business updates, and management discussion.
What to monitor
Berkshire Hathaway Inc. filing alerts should focus on source-backed changes.
Berkshire Hathaway Inc. is tracked here as a insurance and diversified holdings company. The free page gives Google and readers a durable research brief before any paid watchlist delivery.
insurance underwriting and investment updates
large acquisition or disposition 8-Ks
annual shareholder and governance disclosures
Standout filings
Items Google and researchers should be able to understand fast.
10-K · score 7/10
BERKSHIRE HATHAWAY INC annual report: insurance underwriting and investment updates
Medium-priority 10-K: BERKSHIRE HATHAWAY INC annual report: insurance underwriting and investment updates. Useful for a routine company watchlist review.
Verify at SEC source →10-K · score 5/10
BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison
Medium-priority 10-K: BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison. Useful for a routine company watchlist review.
Verify at SEC source →10-K · score 5/10
BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison
Medium-priority 10-K: BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison. Useful for a routine company watchlist review.
Verify at SEC source →Recent filings
Source-linked filing activity
10-K
Berkshire Hathaway Inc. 10-K
BERKSHIRE HATHAWAY INC annual report: insurance underwriting and investment updates
- Filing date
- 2026-03-02
- Accepted
- 2026-03-02
- Score
- 7/10
10-K
Berkshire Hathaway Inc. 10-K
BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison
- Filing date
- 2025-02-24
- Accepted
- 2025-02-24
- Score
- 5/10
10-K
Berkshire Hathaway Inc. 10-K
BERKSHIRE HATHAWAY INC historical annual report for year-over-year comparison
- Filing date
- 2024-02-26
- Accepted
- 2024-02-26
- Score
- 5/10
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