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 Aug 4, 2025.

How much SIRI stock have insiders bought?

Insiders have bought a combined $457.2M of SIRI across 23 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.

SIRI insider buying

1 cluster buy

SIRIUS XM HOLDINGS INC. · Communication Services

When two or more insiders at SIRIUS XM HOLDINGS INC. buy SIRI on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. 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.

Clusters

Distinct insiders

Total bought

$457.2M

Market cap

$10.4B

Detected clusters

Oct 9, 2024 – Feb 3, 2025
Detected Feb 3, 2025
2 insiders
Total bought
$350.8M
Market 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
Aug 4, 2025	BUFFETT WARREN E 10% Owner	1,037,199	$21.63	$22.4M	SEC ↗
Aug 1, 2025	BUFFETT WARREN E 10% Owner	1,930,000	$21.02	$40.6M	SEC ↗
Jul 31, 2025	BUFFETT WARREN E 10% Owner	1,977,837	$21.04	$41.6M	SEC ↗
Jul 31, 2025	BUFFETT WARREN E 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 ↗
Oct 9, 2024	BERKSHIRE HATHAWAY INCcluster 10% Owner	869,800	$23.55	$20.5M	SEC ↗

More Communication Services stocks with insider cluster buys

All insider buying in Communication Services →

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 Aug 4, 2025.
How much SIRI stock have insiders bought?: Insiders have bought a combined $457.2M of SIRI across 23 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. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. 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.