Sirius Xm Holdings SIRI Insider Ownership

Updated Nov 5, 2026

In the last 12 months, insiders at Sirius XM Holdings made open-market purchases of $26.89 million (924.28K shares) and open-market sales of $1.24 million (41.51K shares).

• Sirius XM Holdings' open-market purchases in the past 12 months came from one insider, and its sales from 3 insiders.
• Among Sirius XM Holdings' insiders, Berkshire Hathaway Inc (10% owner) was the largest open-market buyer over the past 12 months, purchasing $26.89 million of stock (924.28K shares), most recently on November 3, 2026.
• Meanwhile, the largest open-market sales of SIRI in the past 12 months were by Scott Andrew Greenstein (President & Chief Content Officer), totaling $618,764 (20.74K shares), most recently on May 27, 2026.
• Beyond open-market trades, insiders at Sirius XM Holdings received 699.26K shares in stock awards, gave up 51.4K shares to cover taxes or exercise prices and gave away 15.99K shares as gifts in the last 12 months.
• According to Business Quant data, insiders at Sirius XM Holdings reported 133.1Mn shares in total in their latest Form 4 filings, or 39.50% of the 337Mn shares outstanding.
• Indirect holdings, through trusts, partnerships, family members and other entities, make up 94.57% (125.87Mn shares) of Sirius XM Holdings' insider total, with the other 5.43% (7.23Mn shares) held directly.
• SIRI's insider total is spread across 20 insiders who have filed a Form 4 in the past two years.
• SIRI's largest insider holders by reported holdings are Berkshire Hathaway Inc (10% owner, 125.73Mn shares), Gregory B. Maffei (Director, 5.39Mn shares) and Jennifer C. Witz (CEO, 382.01K shares).
• Berkshire Hathaway Inc alone accounts for 94.46% of the shares held by Sirius XM Holdings insiders.
• Over the past 12 months, 17 insiders reported transactions in Sirius XM Holdings stock in 75 Form 4 filings.
• Insider figures for SIRI include Form 4 filings through November 3, 2026.