Mannkind's three largest insider shareholders as of May 30, 2026 are Michael Castagna (Chief Executive Officer, 2.58Mn shares), Michael Castagna (Chief Executive Officer, 2.56Mn shares), Michael Castagna (Chief Executive Officer, 2.10Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Burkhard Blank | Evp Chief Medical Officer | 496,905 | 0 | 17 May, 2024 |
| Ronald J Consiglio | - | 545,997 | 0 | 05 Feb, 2024 |
| Christine Mundkur | - | 254,493 | 0 | 28 Feb, 2022 |
| Anthony C Hooper | - | 338,394 | 0 | 28 Feb, 2022 |
| David Thomson | Evp Genl Counsel Secretary | 912,446 | 0 | 17 May, 2024 |
| Lauren M Sabella | Evp Operations | 357,849 | 0 | 28 Mar, 2025 |
| James Samuel Shannon | - | 64,635 | 0 | 03 Mar, 2026 |
| Stuart A Tross | Chief People Workpl Officer | 1,145,704 | 0 | 17 May, 2024 |
| Joseph Kocinsky | Chief Technology Officer | 763,429 | 0 | 12 May, 2022 |
| Michael Castagna | Chief Executive Officer | 2,575,911 | 0 | 10 Mar, 2026 |
| Steven B. Binder | Evp Special Projects | 1,132,967 | 0 | 17 May, 2024 |
| Christopher B Prentiss | Chief Financial Officer | 338,924 | 0 | 24 Apr, 2026 |
| Jennifer Grancio | - | 244,815 | 0 | 28 Feb, 2022 |
| Alejandro Galindo | Evp Endocrine Business Unit | 777,075 | 0 | 23 Aug, 2022 |
| Sabrina Kay | - | 265,600 | 0 | 05 Feb, 2024 |
| Sanjay R Singh | Evp Technical Operations | 455,211 | 0 | 14 Nov, 2025 |
| Dominic Marasco | Pres, Endocrine Business Unit | 333,429 | 0 | 16 May, 2025 |
| Ajay Ahuja | Chief Medical Officer | 318,200 | 0 | 12 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 22 Apr, 2026 | Christopher B Prentiss | Common Stock, $0.01 Par Value | D | 12,267 | $2.74 | 338,924 | D | F |
| 23 Mar, 2026 | Sanjay R Singh | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Ajay Ahuja | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | David Thomson | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Sanjay R Singh | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Sanjay R Singh | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | David Thomson | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | David Thomson | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Michael Castagna | Performance Restricted Stock Unit | A | 796,000 | $0.00 | 796,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Christopher B Prentiss | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Performance Restricted Stock Unit | A | 221,000 | $0.00 | 221,000 | D | A |
| 23 Mar, 2026 | David Thomson | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | Sanjay R Singh | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | Stuart A Tross | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | Sanjay R Singh | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |
| 23 Mar, 2026 | David Thomson | Employee Stock Option (right to buy) | A | 217,000 | $0.00 | 217,000 | D | A |