Michael Castagna sold $253k of MNKD
Chief Executive Officer at MANNKIND CORP. 42,116 shares at an average of $6.00, traded Dec 12, 2025, filed Dec 16, 2025.
Score components
- +25RoleCEO
- +13Trade size$253k at market
- 0Share of holdings soldSold 1.7% of holdings
- +8Cluster2 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001193125-25-321366, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 12, 2025 | MOption exercise Common Stock, $0.01 Par Value10b5-1 | +20,806 | $4.55 | $95k | 2,525,598 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stock, $0.01 Par Value10b5-1 | -20,806 | $6.00 | $125k | 2,504,792 | Dec 16, 2025 |
| Dec 16, 2025 | MOption exercise Common Stock, $0.01 Par Value10b5-1 | +21,310 | $4.55 | $97k | 2,526,102 | Dec 16, 2025 |
| Dec 16, 2025 | SOpen-market sale Common Stock, $0.01 Par Value10b5-1 | -21,310 | $6.00 | $128k | 2,504,792 | Dec 16, 2025 |
| Dec 12, 2025 | MOption exercise Employee Stock Option (Right to Buy)derivative10b5-1 | -7,920 | $0.00 | $0 | 0 | Dec 16, 2025 |
| Dec 12, 2025 | MOption exercise Employee Stock Option (Right to Buy)derivative10b5-1 | -12,886 | $0.00 | $0 | 37,114 | Dec 16, 2025 |
| Dec 16, 2025 | MOption exercise Employee Stock Option (Right to Buy)derivative10b5-1 | -21,310 | $0.00 | $0 | 15,804 | Dec 16, 2025 |
Related signals
Other insiders at MANNKIND CORP and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 6Weak | MANNKIND CORP | Steven B. Binder director | $128k 39,051 shares | -5% | |
| 6Weak | MANNKIND CORP | Steven B. Binder director | $128k 33,558 shares | -4% | |
| 6Weak | MANNKIND CORP | Michael Castagna Chief Executive Officer | $395k 65,804 shares | -3% | |
| 17Weak | MANNKIND CORP | Michael Castagna Chief Executive Officer | $601k 107,920 shares | -4% | |
| 16Weak | MANNKIND CORP | David Thomson EVP Genl Counsel & Secretary | $823k 147,780 shares | -15% | |
| 5Weak | MANNKIND CORP | Sanjay R Singh EVP Technical Operations | $94k 18,777 shares | -4% | |
| 8Weak | MANNKIND CORP | Stuart A Tross Chief People & Workpl Officer | $251k 47,000 shares | -4% | |
| 17Weak | MANNKIND CORP | Steven B. Binder director | $297k 75,367 shares | -8% | |
| 8Weak | MANNKIND CORP | David Thomson EVP Genl Counsel & Secretary | $29k 7,466 shares | -1% | |
| 8Weak | MANNKIND CORP | Steven B. Binder director | $256k 64,085 shares | -6% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.