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Regeneron Pharmaceuticals, Inc.

Michael S Brown (Director) sells REGN shares

4REGNFiled Nov 3, 2026, 4:05 PM ET· Period Oct 30, 2026

AI-generated summary

Director Michael S Brown exercised 1,929 stock options for 1,929 shares of common stock at an average price of $725.89, valued at $1,400,241.81. Michael S Brown also sold 1,929 shares of common stock at an average price of $875.00, valued at $1,687,875. Following these transactions, Michael S Brown directly held 1,380 shares. The transactions were made under a Rule 10b5-1 trading plan adopted on February 25, 2026.

View original filing on SEC.gov (opens SEC EDGAR)

Key facts

Insider
Michael S Brown · Director

Rule 10b5-1 plan · adopted Feb 25, 2026

DateTransactionSharesPriceValueHeld afterOwnership
Oct 30, 2026M · exercise or conversion of a derivativeFootnotes F1+1,929$725.89$1,400,241.813,309Direct
Oct 30, 2026S · open-market saleFootnotes F1−1,929$875.00$1,687,875.001,380Direct
Oct 30, 2026M · exercise or conversion of a derivativeNon-Qualified Stock Option (right to buy)Footnotes F1, F3−1,929$0.00$0.000Direct
Footnotes
  1. F1 Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on February 25, 2026.
  2. F2 These shares are held in a trust for the benefit of the reporting person's immediate family members. The reporting person's spouse is trustee of the trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.
  3. F3 On the date of the Company's first annual meeting of shareholders following the date of grant, a portion of these stock options equal to the portion of one year that had passed from the date of grant became exercisable, and the remainder became exercisable on the first anniversary of the date of grant.

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Not investment advice. Summaries can contain errors; the SEC filing is the official record.