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Mannkind Corp (NASDAQ:MNKD)
US · Delayed Price · Currency is USD
3.19-0.01 (-0.31%)
Insider Score
––Not scored
MNKD Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
MNKD Stock Insider Trading Activity
MNKD stock’s insider trading shows 5 sales on the open market for an estimated $725.61K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Binder Steven B. Director | Sell | 39,051 | $3.29 | $128.48K | 5.2% | 713,258 | Sep 25, 2026 | — | Form 4 |
| Binder Steven B. Director | Sell | 33,558 | $3.81 | $127.86K | 4.3% | 752,309 | Sep 10, 2026 | — | Form 4 |
| Binder Steven B. Director | Sell | 39,051 | $4.06 | $158.55K | 4.7% | 785,867 | Aug 7, 2026 | — | Form 4 |
| Binder Steven B. Director | Sell | 52,485 | $4.06 | $213.09K | 6.0% | 824,918 | Jul 17, 2026 | — | Form 4 |
| Thomson David Other | Sell | 24,109 | $4.05 | $97.64K | 2.9% | 797,554 | Jul 17, 2026 | — | Form 4 |
| Tross Stuart A Other | Option exercise | 93,790 | — | — | 9.1% | 1,123,950 | Jul 15, 2026 | — | Form 4 |
| Prentiss Christopher B CFO | Tax withheld | 11,572 | $4.09 | $47.33K | 3.4% | 329,343 | Jul 15, 2026 | — | Form 4 |
| Prentiss Christopher B CFO | Tax withheld | 10,675 | $4.09 | $43.66K | 3.2% | 318,668 | Jul 15, 2026 | — | Form 4 |
| Marasco Dominic Other | Tax withheld | 3,623 | $4.09 | $14.82K | 1.0% | 343,398 | Jul 15, 2026 | — | Form 4 |
| Tross Stuart A Other | Tax withheld | 33,652 | $4.09 | $137.64K | 3.0% | 1,090,298 | Jul 15, 2026 | — | Form 4 |
| Tross Stuart A Other | Tax withheld | 8,253 | $4.09 | $33.75K | 0.8% | 1,082,045 | Jul 15, 2026 | — | Form 4 |
| Castagna Michael CEO | Option exercise | 350,260 | — | — | 14.3% | 2,796,979 | Jul 15, 2026 | — | Form 4 |
| Castagna Michael CEO | Tax withheld | 192,819 | $4.09 | $788.63K | 6.9% | 2,604,160 | Jul 15, 2026 | — | Form 4 |
| Castagna Michael CEO | Tax withheld | 47,481 | $4.09 | $194.20K | 1.8% | 2,556,679 | Jul 15, 2026 | — | Form 4 |
| Castagna Michael CEO | Tax withheld | 63,996 | $4.09 | $261.74K | 2.5% | 2,492,683 | Jul 15, 2026 | — | Form 4 |
| Castagna Michael CEO | Tax withheld | 58,904 | $4.09 | $240.92K | 2.4% | 2,433,779 | Jul 15, 2026 | — | Form 4 |
| Binder Steven B. Director | Option exercise | 93,790 | — | — | 11.6% | 901,798 | Jul 15, 2026 | — | Form 4 |
| Tross Stuart A Other | Tax withheld | 11,572 | $4.09 | $47.33K | 1.1% | 1,070,473 | Jul 15, 2026 | — | Form 4 |
| Tross Stuart A Other | Tax withheld | 12,331 | $4.09 | $50.43K | 1.2% | 1,058,142 | Jul 15, 2026 | — | Form 4 |
| Singh Sanjay R Other | Option exercise | 70,550 | — | — | 15.5% | 525,761 | Jul 15, 2026 | — | Form 4 |
| Singh Sanjay R Other | Tax withheld | 22,047 | $4.09 | $90.17K | 4.2% | 503,714 | Jul 15, 2026 | — | Form 4 |
| Singh Sanjay R Other | Tax withheld | 5,372 | $4.09 | $21.97K | 1.1% | 498,342 | Jul 15, 2026 | — | Form 4 |
| Singh Sanjay R Other | Tax withheld | 10,079 | $4.09 | $41.22K | 2.0% | 488,263 | Jul 15, 2026 | — | Form 4 |
| Singh Sanjay R Other | Tax withheld | 9,297 | $4.09 | $38.02K | 1.9% | 478,966 | Jul 15, 2026 | — | Form 4 |
| Thomson David Other | Option exercise | 93,790 | — | — | 11.4% | 920,089 | Jul 15, 2026 | — | Form 4 |
| Thomson David Other | Tax withheld | 51,632 | $4.09 | $211.17K | 5.6% | 868,457 | Jul 15, 2026 | — | Form 4 |
| Thomson David Other | Tax withheld | 12,662 | $4.09 | $51.79K | 1.5% | 855,795 | Jul 15, 2026 | — | Form 4 |
| Thomson David Other | Tax withheld | 17,754 | $4.09 | $72.61K | 2.1% | 838,041 | Jul 15, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.