Richard E. Lowenthal

Companies

• Silverback TherapeuticsBoard member Nov 10, 2022 to now¹
• Silverback TherapeuticsChief executive officer Nov 10, 2022 to now¹
• Silverback TherapeuticsPresident Nov 10, 2022 to Jun 1, 2026¹

Holdings

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

Shares held

• Silverback Therapeutics SPRY13,186,389 shares²$53.3M at $4.04Aug 22, 2025

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

Recent filings

• Aug 21, 2025Sold 50,000 shares at $14.49 of Silverback Therapeutics²
• Dec 17, 2024Sold 50,000 shares at $11.67 of Silverback Therapeutics³
• Dec 17, 2024Sold 50,000 shares at $11.67 of Silverback Therapeutics³
• Dec 10, 2024Sold 50,000 shares at $13.16 of Silverback Therapeutics⁴
• Dec 10, 2024Sold 50,000 shares at $13.17 of Silverback Therapeutics⁴
• Dec 6, 2024Exercised options 11,876 shares at $8.42 of Silverback Therapeutics⁵
• Dec 6, 2024Exercised options 13,789 shares at $1.44 of Silverback Therapeutics⁵
• Dec 6, 2024Exercised options 11,876 shares at $8.42 of Silverback Therapeutics⁵
• Nov 19, 2024Sold 50,000 shares at $13.95 of Silverback Therapeutics⁶
• Nov 19, 2024Sold 50,000 shares at $13.95 of Silverback Therapeutics⁶
• Nov 12, 2024Sold 4,876 shares at $17.64 of Silverback Therapeutics⁷
• Nov 12, 2024Sold 45,124 shares at $16.76 of Silverback Therapeutics⁷
• Nov 12, 2024Sold 4,955 shares at $17.64 of Silverback Therapeutics⁷
• Nov 12, 2024Sold 45,045 shares at $16.76 of Silverback Therapeutics⁷
• Oct 15, 2024Sold 50,000 shares at $14.88 of Silverback Therapeutics⁸
• Oct 15, 2024Sold 1,450 shares at $15.25 of Silverback Therapeutics⁸
• Oct 15, 2024Sold 48,550 shares at $14.86 of Silverback Therapeutics⁸
• Oct 8, 2024Sold 50,000 shares at $13.83 of Silverback Therapeutics⁹
• Oct 8, 2024Sold 50,000 shares at $13.83 of Silverback Therapeutics⁹
• Sep 17, 2024Sold 50,000 shares at $12.93 of Silverback Therapeutics¹⁰
• Sep 17, 2024Sold 50,000 shares at $12.93 of Silverback Therapeutics¹⁰
• Sep 10, 2024Sold 50,000 shares at $11.50 of Silverback Therapeutics¹¹
• Sep 10, 2024Sold 50,000 shares at $11.50 of Silverback Therapeutics¹¹
• Aug 20, 2024Sold 2,261 shares at $16.25 of Silverback Therapeutics¹²
• Aug 20, 2024Sold 11,523 shares at $15.62 of Silverback Therapeutics¹²