MannKind Corp
Ownership
Ownership Structure
Who owns MannKind Corp (MNKD)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 92.6% of the shares are freely tradable; institutional investors hold 59.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.99 | 32,133,223 | +12.4 | 06/30/2026 |
| Rubric Capital Management LP | 5.60 | 18,000,000 | +397.2 | 06/30/2026 |
| State Street Corp | 5.03 | 16,174,043 | -13.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.10 | 13,169,392 | +2.2 | 06/30/2026 |
| Geode Capital Management, LLC | 2.47 | 7,947,203 | +5.9 | 06/30/2026 |
| Wellington Management Company LLP | 2.44 | 7,844,807 | +138.9 | 06/30/2026 |
| Frazier Life Sciences Management, L.P. | 2.05 | 6,600,000 | +11.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 10,214,292 | +9.5 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.55 | 8,188,148 | -1.1 | 09/30/2026 |
| State Street® SPDR® S&P® Biotech ETF | 2.24 | 7,212,783 | -1.9 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Castagna Michael | Chief Executive Officer | 2,433,779 | 8,518,227 $ | Jul 15, 2026 | direct |
| Tross Stuart A | Chief People & Workpl Officer | 1,058,142 | 3,703,497 $ | Jul 15, 2026 | direct |
| Thomson David | EVP Genl Counsel & Secretary | 797,554 | 2,791,439 $ | Jul 17, 2026 | direct |
| Binder Steven B. | Director | 713,258 | 2,496,403 $ | Sep 25, 2026 | direct |
| Singh Sanjay R | EVP Technical Operations | 478,966 | 1,676,381 $ | Jul 15, 2026 | direct |
| Marasco Dominic | Pres, Endocrine Business Unit | 343,398 | 1,201,893 $ | Jul 15, 2026 | direct |
| Prentiss Christopher B | Chief Financial Officer | 318,668 | 1,115,338 $ | Jul 15, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 25, 2026 | Binder Steven B. | Director | Sell | 39,051 | 3.29 | 128,478 |
| Sep 10, 2026 | Binder Steven B. | Director | Sell | 33,558 | 3.81 | 127,856 |
| Aug 7, 2026 | Binder Steven B. | Director | Sell | 39,051 | 4.06 | 158,547 |
| Jul 17, 2026 | Thomson David | EVP Genl Counsel & Secretary | Sell | 24,109 | 4.05 | 97,641 |
| Jul 17, 2026 | Binder Steven B. | Director | Sell | 52,485 | 4.06 | 213,089 |
| Jul 15, 2026 | Prentiss Christopher B | Chief Financial Officer | Other | 10,675 | 4.09 | 43,661 |
| Jul 15, 2026 | Prentiss Christopher B | Chief Financial Officer | Other | 11,572 | 4.09 | 47,329 |
| Jul 15, 2026 | Marasco Dominic | Pres, Endocrine Business Unit | Other | 3,623 | 4.09 | 14,818 |
| Jul 15, 2026 | Tross Stuart A | Chief People & Workpl Officer | Other | 12,331 | 4.09 | 50,434 |
| Jul 15, 2026 | Tross Stuart A | Chief People & Workpl Officer | Other | 11,572 | 4.09 | 47,329 |
| Jul 15, 2026 | Tross Stuart A | Chief People & Workpl Officer | Other | 8,253 | 4.09 | 33,755 |
| Jul 15, 2026 | Tross Stuart A | Chief People & Workpl Officer | Other | 33,652 | 4.09 | 137,637 |
| Jul 15, 2026 | Tross Stuart A | Chief People & Workpl Officer | Other | 93,790 | 0.00 | – |
| Jul 15, 2026 | Castagna Michael | Chief Executive Officer | Other | 58,904 | 4.09 | 240,917 |
| Jul 15, 2026 | Castagna Michael | Chief Executive Officer | Other | 63,996 | 4.09 | 261,744 |
| Jul 15, 2026 | Castagna Michael | Chief Executive Officer | Other | 47,481 | 4.09 | 194,197 |
| Jul 15, 2026 | Castagna Michael | Chief Executive Officer | Other | 192,819 | 4.09 | 788,630 |
| Jul 15, 2026 | Castagna Michael | Chief Executive Officer | Other | 350,260 | 0.00 | – |
| Jul 15, 2026 | Singh Sanjay R | EVP Technical Operations | Other | 9,297 | 4.09 | 38,025 |
| Jul 15, 2026 | Singh Sanjay R | EVP Technical Operations | Other | 10,079 | 4.09 | 41,223 |
| Jul 15, 2026 | Singh Sanjay R | EVP Technical Operations | Other | 5,372 | 4.09 | 21,971 |
| Jul 15, 2026 | Singh Sanjay R | EVP Technical Operations | Other | 22,047 | 4.09 | 90,172 |
| Jul 15, 2026 | Singh Sanjay R | EVP Technical Operations | Other | 70,550 | 0.00 | – |
| Jul 15, 2026 | Thomson David | EVP Genl Counsel & Secretary | Other | 16,378 | 4.09 | 66,986 |
| Jul 15, 2026 | Thomson David | EVP Genl Counsel & Secretary | Other | 17,754 | 4.09 | 72,614 |
| Jul 15, 2026 | Thomson David | EVP Genl Counsel & Secretary | Other | 12,662 | 4.09 | 51,788 |
| Jul 15, 2026 | Thomson David | EVP Genl Counsel & Secretary | Other | 51,632 | 4.09 | 211,175 |
| Jul 15, 2026 | Thomson David | EVP Genl Counsel & Secretary | Other | 93,790 | 0.00 | – |
| Jul 15, 2026 | Binder Steven B. | Director | Other | 4,634 | 4.09 | 18,953 |
| Jul 15, 2026 | Binder Steven B. | Director | Other | 4,073 | 4.09 | 16,659 |
| Jul 15, 2026 | Binder Steven B. | Director | Other | 15,688 | 4.09 | 64,164 |
| Jul 15, 2026 | Binder Steven B. | Director | Other | 93,790 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.