What this is
Single filing record
This page shows the rows from one Form 4 filing as reported to the SEC.
Blue Collar Picks
Big buy
$41.6M open-market purchase by Berkshire Hathaway Inc, 10% Owner at Sirius Xm Holdings Inc, filed August 4, 2025. Learn more
What this is
This page shows the rows from one Form 4 filing as reported to the SEC.
Why it matters
The original SEC document is the source record. Always verify before drawing conclusions.
How to read it
Insider activity carries more weight from senior officers, large dollar values, and clustered timing.
Stacked feeds
Insider purchase
Berkshire Hathaway Inc, a 10% beneficial owner, reported a $41.6M open-market purchase equal to 0.47% of SIRI's market cap.
Berkshire Hathaway Inc (10% Owner) bought 1,977,837 shares of SIRI, Sirius Xm Holdings Inc, Communication Services ($8.89B market cap), at $21.0436 per share on July 31, 2025 for a total of $41.6M (0.47% of the market cap).
Permalink https://bluecollarpicks.com/insider-trading/SIRI/buy/29321
Market context
Last enriched May 5, 2026 at 9:20 PM EDT.
Filings
Latest visible filing loading.
Public Form 4 filings, normalized for cleaner scanning.
| Ticker | Type & Role | Value | Filed |
|---|---|---|---|
| This filing | Big Buy 10% Owner | $41.6M | |
Cluster Buy 10% Owner | $10.2M | ||
Cluster Buy 10% Owner | $6.8M | ||
Cluster Buy 10% Owner | $10.2M | ||
Cluster Buy 10% Owner | $6.8M | ||
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Cluster Buy 10% Owner | $19.8M | ||
Cluster Buy 10% Owner | $19.8M | ||
Cluster Buy 10% Owner | $17.1M | ||
Cluster Buy 10% Owner | $17.1M | ||
Cluster detail
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Cluster buys mean multiple insiders buying the same ticker inside a short window.
Rows preserve filing date, trade date, role, value, and source links where available.
Filtered rows are not hidden. Grants, exercises, tax withholding, gifts, and conversions stay available in All Form 4 Filings, ticker history, and specialized views.
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