<div id="readability-page-1"><div><p><span>Castagna Michael Chief Executive Officer of MannKind Corp [MNKD] filed a Form 4 on December 4, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><th><span>Date</span></th><th><span>Transaction</span></th><th><span>Shares</span></th><th><span>Price</span></th><th><span>Value</span></th></tr><tr><td><span>12/2/25</span></td><td><span>Exercise(1)</span></td><td><span>107,920</span></td><td><span>$4.55</span></td><td><span>$491,036</span></td></tr><tr><td><span>12/2/25</span></td><td><span>Planned Sale(2)</span></td><td><span>107,920</span></td><td><span>$5.57</span></td><td><span>$601,114</span></td></tr></tbody></table></div><p><span>Ending Holdings: 2,504,792 - Direct</span></p><div><table><tbody><tr><td><span>(1)</span></td><td><span>Exercised 5.7 years after vest date and 5.5 months before expiration date.</span></td></tr><tr><td><span>(2)</span></td><td><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></td></tr></tbody></table></div><p><span>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.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

MNKD

<p>MannKind Corp's CEO, Michael Castagna, sold 107,920 shares for $601,114, as disclosed in a Form 4 filed with the SEC. The transaction was part of a prearranged trading plan (10b5-1). Ending holdings are 2,504,792 shares directly. The sale occurred after exercising options 5.7 years post-vest and 5.5 months before expiration.</p>

CEO Castagna Sells 107,920 ($601.1K) Of MannKind Corp [MNKD]