SIRI insider buying
1 cluster buySIRIUS XM HOLDINGS INC.
When two or more insiders at SIRIUS XM HOLDINGS INC. buy SIRI in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in SIRI plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Oct 9, 2024 – Feb 3, 2025Detected Feb 3, 20252 insidersTotal bought$350.8MMarket cap$10.4B
All notable open-market buys in SIRI
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 3, 2026 | 10% Owner | 113,348 | $30.23 | $3.4M | SEC ↗ |
| Nov 2, 2026 | 10% Owner | 66,968 | $29.47 | $2.0M | SEC ↗ |
| Oct 30, 2026 | 10% Owner | 743,965 | $28.89 | $21.5M | SEC ↗ |
| Aug 4, 2025 | 10% Owner | 1,037,199 | $21.63 | $22.4M | SEC ↗ |
| Aug 1, 2025 | 10% Owner | 1,930,000 | $21.02 | $40.6M | SEC ↗ |
| Jul 31, 2025 | 10% Owner | 1,977,837 | $21.04 | $41.6M | SEC ↗ |
| Jul 31, 2025 | 10% Owner | 85,389 | $21.43 | $1.8M | SEC ↗ |
| Feb 3, 2025 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 433,079 | $23.49 | $10.2M | SEC ↗ |
| Feb 3, 2025 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 283,899 | $24.05 | $6.8M | SEC ↗ |
| Jan 31, 2025 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 840,000 | $23.62 | $19.8M | SEC ↗ |
| Jan 30, 2025 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 751,141 | $22.79 | $17.1M | SEC ↗ |
| Dec 19, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 2,038,051 | $20.85 | $42.5M | SEC ↗ |
| Dec 19, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 31,326 | $21.52 | $674.1K | SEC ↗ |
| Dec 18, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 915,527 | $21.94 | $20.1M | SEC ↗ |
| Dec 18, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 538,940 | $22.49 | $12.1M | SEC ↗ |
| Dec 17, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 1,440,000 | $22.13 | $31.9M | SEC ↗ |
| Oct 31, 2024 | BUFFETT WARREN Ecluster 10% Owner | 679,207 | $26.59 | $18.1M | SEC ↗ |
| Oct 30, 2024 | BUFFETT WARREN Ecluster 10% Owner | 925,205 | $27.44 | $25.4M | SEC ↗ |
| Oct 29, 2024 | BUFFETT WARREN Ecluster 10% Owner | 623,527 | $27.65 | $17.2M | SEC ↗ |
| Oct 18, 2024 | BUFFETT WARREN Ecluster 10% Owner | 175,569 | $27.43 | $4.8M | SEC ↗ |
| Oct 17, 2024 | BUFFETT WARREN Ecluster 10% Owner | 1,040,000 | $27.01 | $28.1M | SEC ↗ |
| Oct 16, 2024 | BUFFETT WARREN Ecluster 10% Owner | 342,133 | $26.99 | $9.2M | SEC ↗ |
| Oct 11, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 1,259,259 | $24.95 | $31.4M | SEC ↗ |
| Oct 10, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 917,846 | $24.16 | $22.2M | SEC ↗ |
| Oct 10, 2024 | BERKSHIRE HATHAWAY INCcluster 10% Owner | 517,154 | $24.47 | $12.7M | SEC ↗ |
SIRI insider buying — FAQ
- Are insiders buying SIRI stock?
- Yes — 2 distinct insiders have bought SIRI (SIRIUS XM HOLDINGS INC.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 4, 2026.
- How much SIRI stock have insiders bought?
- Insiders have bought a combined $484.1M of SIRI across 26 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in SIRI?
- A cluster buy is two or more distinct SIRIUS XM HOLDINGS INC. insiders — officers, directors, or 10% owners — each buying SIRI on the open market within a rolling window. SIRI has 1 detected cluster buy to date.
- Where does this SIRI insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in SIRI
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy SIRI within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding SIRI.