MNKD
MannKind Corp
NASDAQ: MNKD · HEALTHCARE · BIOTECHNOLOGY
$3.43
+4.26% today
Updated 2026-10-28
Market cap
$977.50M
P/E ratio
—
P/S ratio
2.48x
EPS (TTM)
$-0.14
Dividend yield
—
52W range
$2 – $7
Volume
4.1M
MannKind Corp (MNKD) Insider transactions
Net insider activity
Net buying (6,642,008 shares)
Buy transactions
58
Sell transactions
42
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-23 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 221,000 | — | — |
| 2026-03-23 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 217,000 | — | — |
| 2026-03-23 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 221,000 | — | — |
| 2026-03-23 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 217,000 | — | — |
| 2026-03-23 | SINGH, SANJAY R | EVP Technical Operations | Buy | 221,000 | — | — |
| 2026-03-23 | SINGH, SANJAY R | EVP Technical Operations | Buy | 217,000 | — | — |
| 2026-03-23 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Buy | 221,000 | — | — |
| 2026-03-23 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Buy | 217,000 | — | — |
| 2026-03-23 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 796,000 | — | — |
| 2026-03-23 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 782,000 | — | — |
| 2026-03-23 | AHUJA, AJAY | Chief Medical Officer | Buy | 221,000 | — | — |
| 2026-03-23 | AHUJA, AJAY | Chief Medical Officer | Buy | 217,000 | — | — |
| 2026-03-10 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 100,000 | $2.59 | $259000.00 |
| 2026-03-01 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 15,290 | $3.27 | $49998.30 |
| 2026-03-01 | SHANNON, JAMES SAMUEL | Director | Buy | 12,000 | $3.27 | $39240.00 |
| 2026-03-01 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Buy | 5,000 | $3.27 | $16350.00 |
| 2026-03-01 | HOOPER, ANTHONY C | Director | Buy | 35,000 | $3.27 | $114450.00 |
| 2026-03-01 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 15,290 | $3.27 | $49998.30 |
| 2026-02-26 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 28,143 | — | — |
| 2026-02-26 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 20,000 | — | — |
| 2026-02-26 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 37,525 | — | — |
| 2026-02-26 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 20,000 | — | — |
| 2026-02-26 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 57,750 | — | — |
| 2026-02-26 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 50,000 | — | — |
| 2026-02-26 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 37,525 | — | — |
| 2026-02-26 | BINDER, STEVEN B. | Director | Buy | 45,025 | — | — |
| 2026-01-08 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 47,006 | $6.33 | $297547.98 |
| 2025-12-24 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 44,171 | — | — |
| 2025-12-17 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 50,000 | — | — |
| 2025-12-17 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 15,804 | — | — |
| 2025-12-17 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 65,804 | $6.01 | $395482.04 |
| 2025-12-16 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 21,310 | — | — |
| 2025-12-16 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 21,310 | $6.00 | $127860.00 |
| 2025-12-12 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 12,886 | — | — |
| 2025-12-12 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 7,920 | — | — |
| 2025-12-12 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 20,806 | $4.55 | $94667.30 |
| 2025-12-02 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 87,780 | — | — |
| 2025-12-02 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 20,000 | — | — |
| 2025-12-02 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 147,780 | $5.57 | $823134.60 |
| 2025-12-02 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 87,780 | $4.60 | $403788.00 |
| 2025-12-02 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 60,000 | $4.55 | $273000.00 |
| 2025-12-02 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 65,840 | — | — |
| 2025-12-02 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 42,080 | — | — |
| 2025-12-02 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 107,920 | $4.55 | $491036.00 |
| 2025-11-14 | SINGH, SANJAY R | EVP Technical Operations | Sale | 18,777 | $5.03 | $94448.31 |
| 2025-11-11 | AHUJA, AJAY | Chief Medical Officer | Buy | 318,200 | — | — |
| 2025-10-31 | SINGH, SANJAY R | EVP Technical Operations | Sale | 17,071 | $5.59 | $95426.89 |
| 2025-09-16 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 47,000 | $5.34 | $250980.00 |
| 2025-08-05 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 12,755 | $3.92 | $49999.60 |
| 2025-07-16 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 7,466 | $3.94 | $29416.04 |
| 2025-07-16 | BINDER, STEVEN B. | Director | Sale | 75,367 | $3.94 | $296945.98 |
| 2025-07-15 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 28,057 | $3.85 | $108019.45 |
| 2025-07-15 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 30,361 | $3.85 | $116889.85 |
| 2025-07-15 | SINGH, SANJAY R | EVP Technical Operations | Sale | 15,450 | $3.85 | $59482.50 |
| 2025-07-15 | SABELLA, LAUREN M | EVP Operations | Sale | 11,896 | $3.85 | $45799.60 |
| 2025-07-15 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Sale | 11,540 | $3.85 | $44429.00 |
| 2025-07-15 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 111,275 | $3.85 | $428408.75 |
| 2025-07-15 | BLANK, BURKHARD | EVP Chief Medical Officer | Sale | 9,556 | $3.85 | $36790.60 |
| 2025-07-15 | BINDER, STEVEN B. | Director | Sale | 19,383 | $3.85 | $74624.55 |
| 2025-06-23 | MARASCO, DOMINIC | Pres, Endocrine Business Unit | Buy | 1,000,000 | — | — |
| 2025-06-10 | BINDER, STEVEN B. | Director | Sale | 64,085 | $4.00 | $256340.00 |
| 2025-05-27 | BLANK, BURKHARD | EVP Chief Medical Officer | Sale | 15,630 | $4.12 | $64395.60 |
| 2025-05-20 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 2,345 | $4.41 | $10341.45 |
| 2025-05-20 | BINDER, STEVEN B. | Director | Sale | 12,078 | $4.40 | $53143.20 |
| 2025-05-19 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 6,147 | $4.37 | $26862.39 |
| 2025-05-19 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 9,536 | $4.37 | $41672.32 |
| 2025-05-19 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 26,114 | $4.37 | $114118.18 |
| 2025-05-19 | BINDER, STEVEN B. | Director | Sale | 5,190 | $4.37 | $22680.30 |
| 2025-05-14 | SHANNON, JAMES SAMUEL | Director | Buy | 52,854 | — | — |
| 2025-05-14 | MUNDKUR, CHRISTINE | Director | Buy | 52,854 | — | — |
| 2025-05-14 | MARASCO, DOMINIC | Pres, Endocrine Business Unit | Buy | 72,500 | — | — |
| 2025-05-14 | MARASCO, DOMINIC | Pres, Endocrine Business Unit | Buy | 59,500 | — | — |
| 2025-05-14 | MARASCO, DOMINIC | Pres, Endocrine Business Unit | Buy | 21,929 | $4.56 | $99996.24 |
| 2025-05-14 | KAY, SABRINA | Director | Buy | 52,854 | — | — |
| 2025-05-14 | KAY, SABRINA | Director | Buy | 10,571 | — | — |
| 2025-05-14 | HOOPER, ANTHONY C | Director | Buy | 52,854 | — | — |
| 2025-05-14 | HOOPER, ANTHONY C | Director | Buy | 10,571 | — | — |
| 2025-05-14 | HOOPER, ANTHONY C | Director | Buy | 25,000 | $4.56 | $114000.00 |
| 2025-05-14 | GRANCIO, JENNIFER | Director | Buy | 52,854 | — | — |
| 2025-05-14 | FRIEDMAN, MICHAEL A | Director | Buy | 52,854 | — | — |
| 2025-05-14 | CONSIGLIO, RONALD J | Director | Buy | 52,854 | — | — |
| 2025-05-14 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 27,000 | $4.56 | $123120.00 |
| 2025-05-14 | BINDER, STEVEN B. | Director | Buy | 52,854 | — | — |
| 2025-05-13 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 145,000 | — | — |
| 2025-05-13 | TROSS, STUART A | Chief People & Workpl Officer | Buy | 119,000 | — | — |
| 2025-05-13 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 145,000 | — | — |
| 2025-05-13 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Buy | 119,000 | — | — |
| 2025-05-13 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 32,179 | $4.68 | $150597.72 |
| 2025-05-13 | SINGH, SANJAY R | EVP Technical Operations | Buy | 145,000 | — | — |
| 2025-05-13 | SINGH, SANJAY R | EVP Technical Operations | Buy | 119,000 | — | — |
| 2025-05-13 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Buy | 145,000 | — | — |
| 2025-05-13 | PRENTISS, CHRISTOPHER B | Chief Financial Officer | Buy | 119,000 | — | — |
| 2025-05-13 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 523,000 | — | — |
| 2025-05-13 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Buy | 428,000 | — | — |
| 2025-05-13 | BINDER, STEVEN B. | Director | Sale | 80,144 | $4.69 | $375875.36 |
| 2025-05-12 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 88,724 | $4.56 | $404581.44 |
| 2025-05-12 | TROSS, STUART A | Chief People & Workpl Officer | Sale | 8,051 | $4.56 | $36712.56 |
| 2025-05-12 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 118,473 | $4.56 | $540236.88 |
| 2025-05-12 | THOMSON, DAVID | EVP Genl Counsel & Secretary | Sale | 12,364 | $4.56 | $56379.84 |
| 2025-05-12 | CASTAGNA, MICHAEL | Director, Chief Executive Officer | Sale | 334,954 | $4.56 | $1.53M |
Frequently asked questions
Are MNKD insiders buying or selling?
Over the transactions on record, MNKD insiders have been net buyers, with about $7.01M in stock sold across 42 sales, against 14 open-market purchases.
Does insider selling at MNKD mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which MNKD insiders are selling the most?
Recent selling is concentrated in a few names. CASTAGNA, MICHAEL accounts for the largest share on record, with about $2.59M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.