Last updated Aug 4, 2026
REGENERON PHARMACEUTICALS, INC. (REGN) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in REGN. Across our datasets, 4 superinvestors hold REGN and 10 members of Congress have traded it.
Notable holders include Harry Burn, Mason Hawkins, and Ray Dalio. Active congressional traders include Ro Khanna, Josh Gottheimer, and Jonathan Jackson.
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