Michael Castagna serves as Executive at MANNKIND CORP, where they oversee executive responsibilities. Since joining the company, Michael Castagna has executed 93 insider transactions totaling $4.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 24, 2025 involved gifting 44,171 shares valued at $0.
Michael Castagna currently holds 2,460,621 shares of MANNKIND CORP (MNKD), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Michael Castagna has been a net seller of MNKD stock. They have purchased $400.4K and sold $4.5M worth of shares.
Michael Castagna's most recent insider trade was on Dec 24, 2025, when they sold 44,171 shares at $0.00 per share.
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| $4.55 |
| Discretionary |
| Dec 17, 2025 | MNKD | $395.5K | Sale | 65,804 | $6.01 | Discretionary |
| Dec 16, 2025 | MNKD | $127.9K | Sale | 21,310 | $6.00 | Discretionary |
| Dec 16, 2025 | MNKD | $97.0K | Option Exercise | 21,310 | $4.55 | Discretionary |
| Dec 12, 2025 | MNKD | $94.7K | Option Exercise | 20,806 | $4.55 | Discretionary |
| Dec 12, 2025 | MNKD | $124.8K | Sale | 20,806 | $6.00 | Discretionary |
| Dec 2, 2025 | MNKD | $601.1K | Sale | 107,920 | $5.57 | Discretionary |
| Dec 2, 2025 | MNKD | $491.0K | Option Exercise | 107,920 | $4.55 | Discretionary |
| Jul 15, 2025 | MNKD | $428.4K | Payment | 111,275 | $3.85 | Discretionary |
| Aug 29, 2024 | MNKD | $536.2K | Sale | 85,106 | $6.30 | Discretionary |
| Aug 29, 2024 | MNKD | $0 | Gift | 19,000 | $N/A | Discretionary |
| Aug 28, 2024 | MNKD | $0 | Gift | 13,894 | $N/A | Discretionary |
| Aug 27, 2024 | MNKD | $301.7K | Payment | 56,085 | $5.38 | Discretionary |
| Jul 15, 2024 | MNKD | $275.8K | Payment | 47,309 | $5.83 | Discretionary |
| Jun 30, 2024 | MNKD | $15.4K | Award | 5,000 | $3.09 | Discretionary |
| May 18, 2024 | MNKD | $119.6K | Payment | 26,067 | $4.59 | Discretionary |
| May 17, 2024 | MNKD | $116.5K | Other | 24,330 | $4.79 | Discretionary |
| May 17, 2024 | MNKD | $123.9K | Other | 28,670 | $4.32 | Discretionary |
| May 17, 2024 | MNKD | $1.0M | Award | 221,480 | $4.59 | Discretionary |
| May 17, 2024 | MNKD | $1.1M | Payment | 245,443 | $4.59 | Discretionary |
| May 15, 2024 | MNKD | $0 | Award | 465,000 | $N/A | Discretionary |
| May 10, 2024 | MNKD | $150.5K | Payment | 34,830 | $4.32 | Discretionary |
| Feb 4, 2024 | MNKD | $100.0K | Award | 30,581 | $3.27 | Discretionary |
| Dec 31, 2023 | MNKD | $646 | Award | 209 | $3.09 | Discretionary |
| Dec 15, 2023 | MNKD | $361.9K | Sale | 90,482 | $4.00 | Discretionary |
| Dec 14, 2023 | MNKD | $40.0K | Sale | 10,000 | $4.00 | Discretionary |
| Dec 14, 2023 | MNKD | $400.0K | Sale | 100,000 | $4.00 | Discretionary |
| Nov 1, 2023 | MNKD | $42.5K | Sale | 10,000 | $4.25 | Discretionary |
| Oct 2, 2023 | MNKD | $46.1K | Sale | 10,000 | $4.61 | Discretionary |