Updated Jul 16, 2026 · Last SEC filing 2026-05-23
MANNKIND CORP (MNKD) has filed 16 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-23. 4 Form 8-K material event filings were reported by MNKD in the last 90 days. 3 Form 144 notices of proposed sale were filed for MNKD stock. InsiderAlpha tracks every MNKD SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000899460 |
|---|
| Form 4 filings (90d) | 16 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 3 |
| Latest Form 4 filing | 2026-05-23 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Tross Stuart A | Chief People & Workpl Officer | A — Grant or award | 33.9K | $2.95 | $100K | SEC | |
| CONSIGLIO RONALD J | Insider | A — Grant or award | 10.0K | $2.95 | $30K | SEC | |
| Marasco Dominic | Pres, Endocrine Business Unit | A — Grant or award | 8.5K | $2.95 | $25K | SEC | |
| Binder Steven B. | Insider | S — Open-market sale | 16.9K | $3.29 | $56K | SEC | |
| Thomson David | EVP Genl Counsel & Secretary | S — Open-market sale | 3.0K | $3.29 | $10K | SEC | |
| Binder Steven B. | Insider | F — Tax withholding / forfeiture | 5.6K | $3.52 | $20K | SEC | |
| Castagna Michael | Chief Executive Officer | F — Tax withholding / forfeiture | 35.0K | $3.52 | $123K | SEC | |
| Thomson David | EVP Genl Counsel & Secretary | F — Tax withholding / forfeiture | 12.4K | $3.52 | $44K | SEC | |
| Tross Stuart A | Chief People & Workpl Officer | F — Tax withholding / forfeiture | 8.1K | $3.52 | $28K | SEC | |
| Prentiss Christopher B | Chief Financial Officer | F — Tax withholding / forfeiture | 12.3K | $2.74 | $34K | SEC | |
| Castagna Michael | Chief Executive Officer | P — Open-market purchase | 100.0K | $2.59 | $259K | SEC | |
| Tross Stuart A | Chief People & Workpl Officer | A — Grant or award | 15.3K | $3.27 | $50K | SEC | |
| Castagna Michael | Chief Executive Officer | A — Grant or award | 15.3K | $3.27 | $50K | SEC | |
| Prentiss Christopher B | Chief Financial Officer | A — Grant or award | 5.0K | $3.27 | $16K | SEC | |
| HOOPER ANTHONY C | Insider | A — Grant or award | 35.0K | $3.27 | $114K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for MANNKIND CORP (MNKD). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| CONSIGLIO RONALD J | 3 | $30K |
| Binder Steven B. | 3 | $75K |
| Castagna Michael | 2 | $123K |
| Tross Stuart A | 2 | $128K |
| Thomson David | 2 | $54K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MNKD insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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