REGENERON PHARMACEUTICALS (REGN) Institutional Ownership and Insiders Activity

REGENERON PHARMACEUTICALS (REGN) is widely held by institutional investors, with 6 tracked firms reporting positions valued at approximately $3.77B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Dodge & Cox Stock Fund is the largest disclosed holder, reporting approximately $3.44B in REGN holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Dodge & Cox Stock Fund representing the majority of disclosed value.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.