<div id="readability-page-1"><div><p><span>Castagna Michael Chief Executive Officer of MannKind Corp [MNKD] filed a Form 4 on December 16, 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>12/12/25-12/16/25</span></td><td><span>Exercise(1)</span></td><td><span>42,116</span></td><td><span>$4.55</span></td><td><span>$191,628</span></td></tr><tr><td><span>12/12/25-12/16/25</span></td><td><span>Planned Sale(2)</span></td><td><span>42,116</span></td><td><span>$6.00</span></td><td><span>$252,696</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>21,310 shares exercised 2.4 years after vest date and 5.1 months before expiration date.</span></td></tr><tr><td><span> </span></td><td><span>20,806 shares exercised 3.6 years after vest date and 5.2 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 42,116 shares for $252,696, as disclosed in a Form 4 filing with the SEC. The shares were sold at $6.00 each, following an exercise at $4.55 per share. This transaction was part of a prearranged trading plan (10b5-1). Castagna's ending holdings are 2,504,792 shares.</p>

CEO Castagna Sells 42,116 ($252.7K) Of MannKind Corp [MNKD]