George L. Sing

Companies

• Regeneron PharmaceuticalsBoard member Jan 5, 2006 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Regeneron Pharmaceuticals REGN32,007 shares²$25.8M at $806.51Jan 6, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jan 2, 2026Granted 155 shares of Regeneron Pharmaceuticals²
• Dec 30, 2025Shares withheld for tax 6,188 shares at $774.03 of Regeneron Pharmaceuticals³
• Dec 30, 2025Exercised options 9,212 shares at $520.01 of Regeneron Pharmaceuticals³
• Jan 2, 2025Granted 166 shares of Regeneron Pharmaceuticals⁴
• Dec 31, 2024Shares withheld for tax 1,948 shares at $708.19 of Regeneron Pharmaceuticals⁴
• Dec 31, 2024Exercised options 3,338 shares at $413.33 of Regeneron Pharmaceuticals⁴
• Sep 4, 2024Gift 1,200 shares of Regeneron Pharmaceuticals⁵
• May 3, 2024Shares withheld for tax 877 shares at $942.53 of Regeneron Pharmaceuticals⁶
• May 3, 2024Exercised options 2,000 shares at $413.33 of Regeneron Pharmaceuticals⁶
• Feb 26, 2024Sold 500 shares at $995.00 of Regeneron Pharmaceuticals⁷
• Feb 26, 2024Exercised options 500 shares at $413.33 of Regeneron Pharmaceuticals⁷
• Feb 26, 2024Sold 500 shares at $990.00 of Regeneron Pharmaceuticals⁷
• Feb 26, 2024Exercised options 500 shares at $413.33 of Regeneron Pharmaceuticals⁷
• Feb 23, 2024Sold 500 shares at $985.00 of Regeneron Pharmaceuticals⁸
• Feb 23, 2024Exercised options 500 shares at $413.33 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Sold 1,000 shares at $960.00 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Exercised options 1,000 shares at $413.33 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Sold 1,000 shares at $965.00 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Exercised options 1,000 shares at $413.33 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Sold 1,000 shares at $970.00 of Regeneron Pharmaceuticals⁸
• Feb 22, 2024Exercised options 1,000 shares at $413.33 of Regeneron Pharmaceuticals⁸
• Feb 9, 2024Sold 500 shares at $955.00 of Regeneron Pharmaceuticals⁹
• Feb 9, 2024Exercised options 500 shares at $413.33 of Regeneron Pharmaceuticals⁹
• Feb 8, 2024Sold 500 shares at $945.00 of Regeneron Pharmaceuticals⁹
• Feb 8, 2024Exercised options 500 shares at $413.33 of Regeneron Pharmaceuticals⁹