ZYME's three largest insider shareholders as of May 14, 2026 are Capital, Llc Ecor1 (Director, 22.97Mn shares), Capital, Llc Ecor1 (TenPercentOwner, 10.09Mn shares), Capital, Llc Ecor1 (TenPercentOwner, 9.89Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Capital, Llc Ecor1 | - | 0 | 22,970,388 | 27 Jun, 2025 |
| Capital, Llc Ecor1 | - | 0 | 10,087,473 | 30 Mar, 2023 |
| Capital, Llc Ecor1 | - | 0 | 9,887,473 | 23 Jan, 2023 |
| Group, Llc Redmile | - | 0 | 6,075,918 | 18 Oct, 2022 |
| Gregory Austin Ciongoli | - | 488,500 | 0 | 12 Aug, 2025 |
| Kenneth Galbraith | Chair Ceo | 226,842 | 0 | 12 Jan, 2026 |
| Mark Hollywood | Evp Chief Operating Officer | 132,913 | 0 | 13 Jan, 2026 |
| Paul Andrew Moore | Chief Scientific Officer | 48,497 | 0 | 12 Jan, 2026 |
| Jeffrey T L Smith | Evp Chief Medical Officer | 26,708 | 0 | 12 Jan, 2026 |
| Neil A Klompas | President Coo | 17,032 | 0 | 14 Mar, 2023 |
| Neil Josephson | Chief Medical Officer | 14,449 | 0 | 23 Dec, 2022 |
| Christopher Astle | Svp Chief Financial Officer | 6,503 | 0 | 08 Jan, 2024 |
| Leone D Patterson | Evp, Chief Bus Fin Officer | 459 | 0 | 07 Jan, 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 |
|---|---|---|---|---|---|---|---|---|
| 09 Apr, 2026 | Adam Schayowitz | Stock Option (Right to Buy) | A | 70,000 | $0.00 | 70,000 | D | A |
| 09 Apr, 2026 | Scott Platshon | Stock Option (Right to Buy) | A | 70,000 | $0.00 | 70,000 | D | A |
| 09 Apr, 2026 | Scott Platshon | Restricted Stock Unit | A | 47,000 | $0.00 | 47,000 | D | A |
| 09 Apr, 2026 | Adam Schayowitz | Restricted Stock Unit | A | 47,000 | $0.00 | 47,000 | D | A |
| 09 Apr, 2026 | Scott Platshon | Performance Stock Unit | A | 76,000 | $0.00 | 76,000 | D | A |
| 09 Apr, 2026 | Adam Schayowitz | Performance Stock Unit | A | 76,000 | $0.00 | 76,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Stock Option (Right to Buy) | A | 178,000 | $0.00 | 178,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Stock Option (Right to Buy) | A | 178,000 | $0.00 | 178,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Restricted Stock Unit | A | 119,000 | $0.00 | 119,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Restricted Stock Unit | A | 119,000 | $0.00 | 119,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Restricted Stock Unit | A | 50,000 | $0.00 | 50,000 | D | A |
| 06 Apr, 2026 | Kristin Stafford | Restricted Stock Unit | A | 50,000 | $0.00 | 50,000 | D | A |
| 12 Jan, 2026 | Mark Hollywood | Common Stock | A | 17,666 | $0.00 | 139,033 | D | M |
| 12 Jan, 2026 | Brian N Cherry | Stock Option (Right to Buy) | A | 23,000 | $0.00 | 23,000 | D | A |
| 12 Jan, 2026 | Mark Hollywood | Common Stock | D | 6,120 | $22.67 | 132,913 | D | S |
| 12 Jan, 2026 | Brian N Cherry | Restricted Stock Unit | A | 15,400 | $0.00 | 15,400 | D | A |
| 12 Jan, 2026 | Mark Hollywood | Restricted Stock Unit | D | 17,666 | $0.00 | 35,334 | D | M |
| 12 Jan, 2026 | Mark Hollywood | Stock Option (Right to Buy) | A | 70,000 | $0.00 | 70,000 | D | A |
| 12 Jan, 2026 | Mark Hollywood | Restricted Stock Unit | A | 47,000 | $0.00 | 47,000 | D | A |
| 12 Jan, 2026 | Mark Hollywood | Performance Stock Unit | A | 66,000 | $0.00 | 66,000 | D | A |