Updated Jul 16, 2026
Castagna Michael has filed 2 SEC Form 4 filings across 1 company in the last 90 days — active on both sides. Lifetime open-market purchases: $259K. Lifetime open-market sales: $2.10M.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-14 | MNKD | MANNKIND CORP | F — Tax withholding / forfeiture | 35.0K | $3.52 | $123K |
| 2026-03-11 | MNKD | MANNKIND CORP | P — Open-market purchase | 100.0K | $2.59 | $259K |
| 2026-03-03 | MNKD | MANNKIND CORP | A — Grant or award | 15.3K | $3.27 | $50K |
| 2025-12-30 | MNKD | MANNKIND CORP | G — Bona-fide gift | 44.2K | $0.00 | |
| 2025-12-20 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 65.8K | $6.01 | $395K |
| 2025-12-20 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 65.8K | $4.55 | $299K |
| 2025-12-17 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 21.3K | $6.00 | $128K |
| 2025-12-17 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 21.3K | $4.55 | $97K |
| 2025-12-17 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 20.8K | $6.00 | $125K |
| 2025-12-17 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 20.8K | $4.55 | $95K |
| 2025-12-16 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 21.3K | $6.00 | $128K |
| 2025-12-16 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 21.3K | $4.55 | $97K |
| 2025-12-16 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 20.8K | $6.00 | $125K |
| 2025-12-16 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 20.8K | $4.55 | $95K |
| 2025-12-05 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 107.9K | $5.57 | $601K |
| 2025-12-05 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 107.9K | $4.55 | $491K |
| 2025-12-04 | MNKD | MANNKIND CORP | S — Open-market sale [10b5-1] | 107.9K | $5.57 | $601K |
| 2025-12-04 | MNKD | MANNKIND CORP | M — Option exercise [10b5-1] | 107.9K | $4.55 | $491K |
| 2025-07-15 | MNKD | MANNKIND CORP | F — Tax withholding / forfeiture | 111.3K | $3.85 | $428K |
Castagna Michael is a corporate insider — currently tracked as Insider of MANNKIND CORP (MNKD). InsiderAlpha tracks every SEC Form 4 filing in real time.
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 1 open-market purchases ($259K) and 7 open-market sales ($2.10M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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