MannKind Corporation CEO Michael Castagna disposed of 363,200 shares on July 15, 2026, in a non-discretionary transaction to satisfy tax withholding obligations tied to the vesting of restricted stock units. The sale, valued at approximately $1.5 million based on a weighted average price of $4.09 per share, represented 13% of his direct equity holdings. Following the transaction, Castagna retains 2,433,779 shares directly, maintaining significant exposure to the company's long-term performance. The underlying RSUs vested after MannKind achieved 83% of performance targets linked to total shareholder return and stock price benchmarks set in May 2023.
MannKind CorpCEO sold 13% of direct holdings to cover tax obligations, signaling potential insider selling pressure.