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Regeneron Officer Files Form 144 to Sell $175K in Common Stock

Low SignificanceNovember 4, 2026 at 6:29:07 PM EST

REGENERON PHARMACEUTICALS, INC.

$REGN144CIK: 0000872589

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Filing Summary

šŸ“‹ Form 144 Proposed Sale Notice: Regeneron Pharmaceuticals, Inc. (REGN) • Insider: Jason Pitofsky (Officer) • Shares Proposed to Sell: 180 Common Stock • Estimated Total Value: $175,204.80 (~$973.36/share) • Broker: J.P. Morgan Securities LLC • Approximate Date of Sale: 11/04/2026 • Significance: Low

Comprehensive Analysis

Executive Summary

On November 4, 2026, Jason Pitofsky, an Officer of Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN), submitted a Form 144 filing signaling an intention to sell up to 180 shares of common stock through broker J.P. Morgan Securities LLC, representing an aggregate market value of approximately $175,204.80.

Transaction Details

  • Security: Common Stock
  • Shares Proposed for Sale: 180
  • Estimated Aggregate Market Value: $175,204.80 (implied price of ~$973.36 per share)
  • Shares Outstanding: 101,630,713
  • Approximate Sale Date: November 4, 2026
  • Acquisition Origin: The shares were inherited on August 13, 2024, from Freddy Runne.
  • Remarks: The filing notes that the shares are to be sold by Stephanie Pitofsky.

Market and Insider Context

  • Trading Significance: Low. The disposition represents an extremely fractional percentage (<0.001%) of Regeneron's 101.6M common shares outstanding.
  • Context: The transaction originates from inherited securities and is modest in size relative to typical insider liquidity events at large-cap biopharmaceutical companies.
Topics:#Regeneron#REGN#Form144#InsiderSelling#Biotech

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