Donald A. Denkhaus

Companies

• Catalyst PharmaceuticalsBoard member Mar 2, 2015 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

• Catalyst Pharmaceuticals CPRX0 shares²Jul 15, 2026

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

Recent filings

• Jul 15, 2026Returned to company 498,773 shares at $31.50 of Catalyst Pharmaceuticals²
• Dec 29, 2025Exercised options 1,334 shares of Catalyst Pharmaceuticals³
• Dec 8, 2025Exercised options 1,413 shares of Catalyst Pharmaceuticals⁴
• Nov 21, 2025Exercised options 947 shares of Catalyst Pharmaceuticals⁵
• Feb 14, 2025Exercised options 4,000 shares of Catalyst Pharmaceuticals⁶
• Jan 8, 2025Exercised options 50,000 shares at $2.24 of Catalyst Pharmaceuticals⁷
• Dec 27, 2024Exercised options 1,333 shares of Catalyst Pharmaceuticals⁸
• Dec 9, 2024Exercised options 1,413 shares of Catalyst Pharmaceuticals⁹
• Feb 15, 2024Exercised options 4,000 shares of Catalyst Pharmaceuticals¹⁰
• Feb 5, 2024Exercised options 40,000 shares at $4.01 of Catalyst Pharmaceuticals¹¹
• Dec 27, 2023Exercised options 1,333 shares of Catalyst Pharmaceuticals¹²
• Aug 3, 2023Exercised options 60,000 shares at $1.13 of Catalyst Pharmaceuticals¹³
• Feb 15, 2023Exercised options 4,000 shares of Catalyst Pharmaceuticals¹⁴
• Jan 24, 2023Exercised options 50,000 shares at $0.79 of Catalyst Pharmaceuticals¹⁵
• Dec 6, 2022Exercised options 1,334 shares of Catalyst Pharmaceuticals¹⁶
• Nov 11, 2022Sold 20,000 shares at $16.59 of Catalyst Pharmaceuticals¹⁷
• Sep 14, 2022Sold 20,000 shares at $15.34 of Catalyst Pharmaceuticals¹⁸
• Jan 10, 2022Exercised options 40,000 shares at $2.53 of Catalyst Pharmaceuticals¹⁹
• Jan 5, 2022Exercised options 50,000 shares at $3.35 of Catalyst Pharmaceuticals²⁰
• Dec 3, 2021Exercised options 1,333 shares of Catalyst Pharmaceuticals²¹