Joseph J. Larosa

Companies

• Regeneron PharmaceuticalsGeneral counsel Dec 17, 2013 to now¹
• Regeneron PharmaceuticalsSVP Gen Counsel & Secretary Sep 2, 2011 to Dec 17, 2012²

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 REGN36,786 shares³$29.7M at $806.51Aug 21, 2026

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

Recent filings

• Aug 19, 2026Shares withheld for tax 9,019 shares at $830.15 of Regeneron Pharmaceuticals³
• Aug 19, 2026Exercised options 12,282 shares at $381.92 of Regeneron Pharmaceuticals³
• Dec 8, 2025Shares withheld for tax 1,396 shares at $712.94 of Regeneron Pharmaceuticals⁴
• Dec 5, 2025Granted 2,476 shares of Regeneron Pharmaceuticals⁴
• Nov 20, 2025Shares withheld for tax 12,686 shares at $736.77 of Regeneron Pharmaceuticals⁵
• Nov 20, 2025Exercised options 14,450 shares at $555.67 of Regeneron Pharmaceuticals⁵
• Dec 16, 2024Shares withheld for tax 702 shares at $730.81 of Regeneron Pharmaceuticals⁶
• Dec 9, 2024Shares withheld for tax 492 shares at $787.00 of Regeneron Pharmaceuticals⁷
• Dec 6, 2024Granted 2,332 shares of Regeneron Pharmaceuticals⁷
• Jul 11, 2024Sold 1,866 shares at $1,088.95 of Regeneron Pharmaceuticals⁸
• Jun 24, 2024Shares withheld for tax 11,084 shares at $1,060.13 of Regeneron Pharmaceuticals⁹
• Jun 24, 2024Exercised options 14,450 shares at $555.67 of Regeneron Pharmaceuticals⁹
• Jun 10, 2024Gift 1,608 shares of Regeneron Pharmaceuticals¹⁰
• May 21, 2024Sold 1,865 shares at $994.90 of Regeneron Pharmaceuticals¹¹
• Feb 26, 2024Sold 1,000 shares at $990.00 of Regeneron Pharmaceuticals¹²
• Feb 22, 2024Sold 1,000 shares at $967.65 of Regeneron Pharmaceuticals¹³
• Feb 7, 2024Sold 1,000 shares at $950.00 of Regeneron Pharmaceuticals¹⁴
• Jan 3, 2024Shares withheld for tax 24,493 shares at $912.30 of Regeneron Pharmaceuticals¹⁵
• Jan 3, 2024Exercised options 34,000 shares at $399.66 of Regeneron Pharmaceuticals¹⁵
• Dec 11, 2023Shares withheld for tax 669 shares at $844.09 of Regeneron Pharmaceuticals¹⁶
• Dec 8, 2023Granted 2,133 shares of Regeneron Pharmaceuticals¹⁶
• Dec 8, 2023Shares withheld for tax 852 shares at $843.79 of Regeneron Pharmaceuticals¹⁶
• Mar 23, 2023Shares withheld for tax 6,742 shares at $801.59 of Regeneron Pharmaceuticals¹⁷
• Mar 23, 2023Exercised options 10,000 shares at $270.43 of Regeneron Pharmaceuticals¹⁷
• Mar 10, 2023Gift 1,006 shares of Regeneron Pharmaceuticals¹⁸