<div id="readability-page-1"><div>del Carmen Jeffrey Officer of Catalyst Pharmaceuticals Inc [CPRX] filed a Form 4 on November 24, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:<div><table><tbody><tr><th>Date</th><th>Transaction</th><th>Shares</th><th>Price</th><th>Value</th></tr><tr><td>11/21/25</td><td>Exercise</td><td>5,603</td><td>$0.00</td><td>N/A</td></tr><tr><td>11/21/25</td><td>Surrender(1)</td><td>1,641</td><td>$23.28</td><td>$38,202</td></tr></tbody></table></div>Ending Holdings: 3,962 - Direct<ul><li>(1)</li><li>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</li></ul>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data. </div></div>

CPRX

Officer del Carmen of Catalyst Pharmaceuticals Inc filed a Form 4 with the SEC, disclosing changes in ownership. On November 21, 2025, he exercised 5,603 shares and surrendered 1,641 shares at $23.28 each to cover option exercise costs and tax liabilities. His ending holdings are 3,962 shares directly. The Washington Service offers insider trading analysis and data services.

Officer del Carmen Acquires 3,962 Of Catalyst Pharmaceuticals Inc [CPRX]