David S. Tierney

Companies

• Catalyst PharmaceuticalsBoard member Oct 23, 2006 to now¹
• ZEVRA THERAPEUTICS, INC.Board member Apr 15, 2015 to Mar 13, 2023²
• TREX WIND-DOWN, INC.Chief executive officer Sep 13, 2018 to Jun 14, 2019³
• TREX WIND-DOWN, INC.Board member Sep 13, 2018 to Sep 20, 2018³
• Apricus BiosciencesBoard member Feb 2, 2007 to Oct 19, 2009⁴

Holdings

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

Shares held

• ZTZEVRA THERAPEUTICS, INC. ZVRA10,835 shares⁵$111.4K at $10.28Mar 9, 2023
• Catalyst Pharmaceuticals CPRX0 shares⁶Jul 15, 2026

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

Recent filings

• Jul 15, 2026Returned to company 383,314 shares at $31.50 of Catalyst Pharmaceuticals⁶
• Dec 29, 2025Exercised options 1,334 shares of Catalyst Pharmaceuticals⁷
• Dec 8, 2025Exercised options 1,413 shares of Catalyst Pharmaceuticals⁸
• Nov 21, 2025Exercised options 947 shares of Catalyst Pharmaceuticals⁹
• Aug 27, 2025Sold 26,000 shares at $20.20 of Catalyst Pharmaceuticals¹⁰
• Aug 27, 2025Exercised options 50,000 shares at $2.24 of Catalyst Pharmaceuticals¹⁰
• Feb 14, 2025Exercised options 4,000 shares of Catalyst Pharmaceuticals¹¹
• Dec 27, 2024Exercised options 1,333 shares of Catalyst Pharmaceuticals¹²
• Dec 9, 2024Exercised options 1,413 shares of Catalyst Pharmaceuticals¹³
• Aug 21, 2024Sold 15,000 shares at $20.10 of Catalyst Pharmaceuticals¹⁴
• Aug 21, 2024Exercised options 15,000 shares at $4.01 of Catalyst Pharmaceuticals¹⁴
• Apr 8, 2024Sold 25,000 shares at $15.68 of Catalyst Pharmaceuticals¹⁵
• Apr 8, 2024Exercised options 25,000 shares at $4.01 of Catalyst Pharmaceuticals¹⁵
• Feb 15, 2024Exercised options 4,000 shares of Catalyst Pharmaceuticals¹⁶
• Jan 2, 2024Exercised options 10,000 shares at $1.13 of Catalyst Pharmaceuticals¹⁷
• Dec 27, 2023Exercised options 1,333 shares of Catalyst Pharmaceuticals¹⁸
• Dec 12, 2023Sold 50,000 shares at $13.33 of Catalyst Pharmaceuticals¹⁹
• Dec 12, 2023Exercised options 50,000 shares at $1.13 of Catalyst Pharmaceuticals¹⁹
• May 11, 2023Exercised options 20,000 shares at $0.79 of Catalyst Pharmaceuticals²⁰
• Apr 5, 2023Sold 30,000 shares at $16.83 of Catalyst Pharmaceuticals²¹
• Apr 5, 2023Exercised options 30,000 shares at $0.79 of Catalyst Pharmaceuticals²¹
• Mar 9, 2023Bought 5,000 shares at $4.15 of ZEVRA THERAPEUTICS, INC.⁵
• Feb 15, 2023Exercised options 4,000 shares of Catalyst Pharmaceuticals²²
• Dec 6, 2022Exercised options 1,334 shares of Catalyst Pharmaceuticals²³
• Aug 22, 2022Sold 20,000 shares at $14.16 of Catalyst Pharmaceuticals²⁴