MXCT's three largest insider shareholders as of June 18, 2026 are Partners Master Fund, L.P. Casdin (TenPercentOwner, 10.00Mn shares), Maher Masoud (President And Ceo, 475.00K shares), Stanley C Erck (Director, 398.33K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Richard Douglas | - | 230,577 | 0 | 13 Aug, 2025 |
| Patrick J Balthrop | - | 50,577 | 0 | 23 Jun, 2025 |
| Stanley C Erck | - | 398,328 | 0 | 13 Aug, 2025 |
| Douglas J Swirsky | Chief Financial Officer | 151,669 | 0 | 19 Mar, 2026 |
| Cynthia Collins | - | 80,889 | 0 | 23 Jun, 2025 |
| Partners Master Fund, L.P. Casdin | - | 10,000,000 | 0 | 05 Oct, 2022 |
| William W Brooke | - | 150,879 | 0 | 13 Aug, 2025 |
| Yasir B. Al-Wakeel | - | 50,577 | 0 | 23 Jun, 2025 |
| Rekha Hemrajani | - | 39,893 | 0 | 27 Aug, 2025 |
| Douglas Doerfler | President And Ceo | 333,197 | 0 | 06 Dec, 2023 |
| Ron Holtz | Svp And Cao | 125,251 | 0 | 16 Nov, 2021 |
| Art Mandell | - | 395,851 | 0 | 13 Jun, 2024 |
| Maher Masoud | President And Ceo | 475,000 | 0 | 31 Mar, 2026 |
| Thomas M. Ross | Evp, Global Sales | 25,000 | 0 | 05 Aug, 2024 |
| John Joseph Johnston | - | 171,160 | 0 | 23 Jun, 2025 |
| David I. Sandoval | General Counsel | 64,219 | 0 | 20 Mar, 2025 |
| Ali Soleymannezhad | Chief Commercial Officer | 59,439 | 0 | 20 Mar, 2025 |
| Parmeet Ahuja | Chief Financial Officer | 187,500 | 0 | 17 Apr, 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 |
|---|---|---|---|---|---|---|---|---|
| 15 Apr, 2026 | Parmeet Ahuja | Common Stock | A | 187,500 | $0.00 | 187,500 | D | A |
| 30 Mar, 2026 | Parmeet Ahuja | Employee Stock Option (right to buy) | A | 375,000 | $0.00 | 375,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Common Stock | A | 300,000 | $0.00 | 475,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Common Stock | A | 300,000 | $0.00 | 475,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Common Stock | A | 300,000 | $0.00 | 475,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Common Stock | A | 300,000 | $0.00 | 475,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Employee Stock Option (right to buy) | A | 600,000 | $0.00 | 600,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Employee Stock Option (right to buy) | A | 600,000 | $0.00 | 600,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Employee Stock Option (right to buy) | A | 600,000 | $0.00 | 600,000 | D | A |
| 27 Mar, 2026 | Maher Masoud | Employee Stock Option (right to buy) | A | 600,000 | $0.00 | 600,000 | D | A |
| 17 Mar, 2026 | Douglas J Swirsky | Common Stock | D | 10,142 | $0.82 | 151,669 | D | S |
| 17 Mar, 2026 | Douglas J Swirsky | Common Stock | D | 10,142 | $0.82 | 151,669 | D | S |
| 17 Mar, 2026 | Douglas J Swirsky | Common Stock | D | 10,142 | $0.82 | 151,669 | D | S |
| 17 Mar, 2026 | Douglas J Swirsky | Common Stock | D | 10,142 | $0.82 | 151,669 | D | S |
| 25 Jun, 2025 | Rekha Hemrajani | Common Stock | D | 10,684 | $2.09 | 39,893 | D | S |
| 13 Aug, 2025 | Maher Masoud | Common Stock | A | 75,000 | $1.37 | 175,000 | D | P |
| 13 Aug, 2025 | Stanley C Erck | Common Stock | A | 100,000 | $1.37 | 398,328 | D | P |
| 13 Aug, 2025 | Douglas J Swirsky | Common Stock | A | 50,000 | $1.29 | 161,811 | D | P |
| 13 Aug, 2025 | Maher Masoud | Common Stock | A | 75,000 | $1.37 | 175,000 | D | P |
| 13 Aug, 2025 | Douglas J Swirsky | Common Stock | A | 50,000 | $1.29 | 161,811 | D | P |