As of March 23, 2026, Mannkind's top three insider holders are Michael Castagna (Chief Executive Officer, 2.58Mn shares), Stuart A Tross (Chief People Workpl Officer, 1.00Mn shares), David Thomson (Evp Genl Counsel Secretary, 841.72K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michael Castagna | Chief Executive Officer | 2,575,911 | 0 | 10 Mar, 2026 |
| Stuart A Tross | Chief People Workpl Officer | 1,000,297 | 0 | 02 Mar, 2026 |
| David Thomson | Evp Genl Counsel Secretary | 841,719 | 0 | 04 Dec, 2025 |
| Steven B. Binder | 830,508 | 0 | 17 Jul, 2025 | |
| Alejandro Galindo | Evp Endocrine Business Unit | 777,075 | 0 | 23 Aug, 2022 |
| Joseph Kocinsky | Chief Technology Officer | 745,233 | 0 | 29 Aug, 2022 |
| Ronald J Consiglio | 545,997 | 0 | 05 Feb, 2024 | |
| Burkhard Blank | Evp Chief Medical Officer | 460,791 | 0 | 17 Jul, 2025 |
| Sanjay R Singh | Evp Technical Operations | 455,211 | 0 | 14 Nov, 2025 |
| Lauren M Sabella | Evp Operations | 349,841 | 0 | 17 Jul, 2025 |
| Christopher B Prentiss | Chief Financial Officer | 348,854 | 0 | 03 Mar, 2026 |
| Dominic Marasco | Pres, Endocrine Business Unit | 333,429 | 0 | 16 May, 2025 |
| Ajay Ahuja | Chief Medical Officer | 318,200 | 0 | 12 Nov, 2025 |
| Sabrina Kay | 265,600 | 0 | 05 Feb, 2024 | |
| Christine Mundkur | 254,493 | 0 | 28 Feb, 2022 | |
| Jennifer Grancio | 244,815 | 0 | 28 Feb, 2022 | |
| Anthony C Hooper | 236,153 | 0 | 03 Mar, 2026 | |
| James Samuel Shannon | 64,635 | 0 | 03 Mar, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Mar, 2026 | Michael Castagna | Common Stock, $0.01 Par Value | A | 100,000 | $2.59 | 2,575,911 | D | P |
| 01 Mar, 2026 | Anthony C Hooper | Common Stock, $0.01 Par Value | A | 35,000 | $3.27 | 236,153 | D | A |
| 01 Mar, 2026 | Christopher B Prentiss | Common Stock, $0.01 Par Value | A | 5,000 | $3.27 | 348,854 | D | A |
| 01 Mar, 2026 | James Samuel Shannon | Common Stock, $0.01 Par Value | A | 12,000 | $3.27 | 64,635 | D | A |
| 01 Mar, 2026 | Michael Castagna | Common Stock, $0.01 Par Value | A | 15,290 | $3.27 | 2,475,911 | D | A |
| 26 Feb, 2026 | David Thomson | Employee Stock Option (right to buy) | A | 20,000 | $0.00 | 20,000 | D | A |
| 26 Feb, 2026 | Steven B. Binder | Employee Stock Option (right to buy) | A | 45,025 | $0.00 | 45,025 | D | A |
| 01 Mar, 2026 | Stuart A Tross | Common Stock, $0.01 Par Value | A | 15,290 | $3.27 | 1,000,297 | D | A |
| 26 Feb, 2026 | Michael Castagna | Employee Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 26 Feb, 2026 | David Thomson | Employee Stock Option (right to buy) | A | 37,525 | $0.00 | 37,525 | D | A |
| 26 Feb, 2026 | Stuart A Tross | Employee Stock Option (right to buy) | A | 20,000 | $0.00 | 20,000 | D | A |
| 26 Feb, 2026 | Michael Castagna | Employee Stock Option (right to buy) | A | 57,750 | $0.00 | 57,750 | D | A |
| 26 Feb, 2026 | Stuart A Tross | Employee Stock Option (right to buy) | A | 28,143 | $0.00 | 28,143 | D | A |
| 26 Feb, 2026 | Michael Castagna | Employee Stock Option (right to buy) | A | 37,525 | $0.00 | 37,525 | D | A |
| 08 Jan, 2026 | Stuart A Tross | Common Stock, $0.01 Par Value | D | 47,006 | $6.33 | 985,007 | D | S |
| 24 Dec, 2025 | Michael Castagna | Common Stock, $0.01 Par Value | D | 44,171 | $0.00 | 2,460,621 | D | G |
| 17 Dec, 2025 | Michael Castagna | Common Stock, $0.01 Par Value | A | 65,804 | $4.55 | 2,570,596 | D | M |
| 17 Dec, 2025 | Michael Castagna | Common Stock, $0.01 Par Value | D | 65,804 | $6.01 | 2,504,792 | D | S |
| 17 Dec, 2025 | Michael Castagna | Employee Stock Option (Right to Buy) | D | 15,804 | $0.00 | 0 | D | M |
| 17 Dec, 2025 | Michael Castagna | Employee Stock Option (Right to Buy) | D | 50,000 | $0.00 | 0 | D | M |