Zentalis Pharmaceuticals's top three insider shareholders as of March 23, 2026 are Group Walters (TenPercentOwner, 13.51Mn shares), Capital Management Company, Lp Matrix (TenPercentOwner, 6.46Mn shares), Anthony Y Sun (President Ceo, 1.18Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Group Walters | 13,509,973 | 0 | 08 Jan, 2026 | |
| Capital Management Company, Lp Matrix | 0 | 6,459,973 | 15 Dec, 2025 | |
| Anthony Y Sun | President Ceo | 1,175,589 | 0 | 05 Apr, 2022 |
| Andrea Paul | Chief Legal Officer | 1,070,784 | 0 | 05 Feb, 2025 |
| Kevin D. Bunker | Chief Scientific Officer | 834,931 | 0 | 21 Dec, 2023 |
| Cam Gallagher | President, Interim Cfo | 633,680 | 0 | 31 May, 2024 |
| Mark Lackner | Chief Scientific Officer | 512,856 | 0 | 05 Feb, 2025 |
| Kimberly Blackwell | Chief Executive Officer | 484,145 | 0 | 05 Feb, 2024 |
| Melissa B, Epperly | Chief Financial Officer | 451,449 | 0 | 12 Feb, 2024 |
| Melissa B, Epperly | Chief Financial Officer | 451,449 | 0 | 12 Feb, 2024 |
| Diana Hausman | Chief Medical Officer | 373,876 | 0 | 09 May, 2024 |
| Scott Dunseth Myers | 338,795 | 0 | 18 Jun, 2025 | |
| David Michael Johnson | 250,421 | 0 | 18 Jun, 2025 | |
| Jan Skvarka | 207,154 | 0 | 18 Jun, 2025 | |
| Vincent Vultaggio | Pao And Pfo | 146,506 | 0 | 10 Feb, 2026 |
| Luke Nathaniel Walker | 144,284 | 0 | 18 Jun, 2025 | |
| Enoch Kariuki | 137,365 | 0 | 18 Jun, 2025 | |
| Carrie Brownstein | Chief Medical Officer | 105,685 | 0 | 06 Oct, 2023 |
| Anthony Y Sun | President Ceo | 0 | 103,650 | 07 Dec, 2021 |
| Julia Marie Eastland | Ceo President | 79,133 | 0 | 10 Feb, 2026 |
| Iris Roth | Chief Operating Officer | 52,500 | 0 | 02 Mar, 2023 |
| Ingmar Bruns | Chief Medical Officer | 33,332 | 0 | 10 Feb, 2026 |
| Alexis Pinto | Chief Legal Officer | 22,240 | 0 | 14 Feb, 2022 |
| Dimitris Voliotis | Svp, Clinical Development | 15,978 | 0 | 14 Feb, 2022 |
| Kevin D. Bunker | Chief Scientific Officer | 0 | 15,000 | 31 May, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Feb, 2026 | Ingmar Bruns | Common Stock | D | 2,962 | $2.43 | 33,667 | D | S |
| 06 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 29,951 | $2.43 | 156,779 | D | S |
| 06 Feb, 2026 | Julia Marie Eastland | Common Stock | D | 7,866 | $2.43 | 80,022 | D | S |
| 09 Feb, 2026 | Julia Marie Eastland | Common Stock | D | 889 | $2.39 | 79,133 | D | S |
| 09 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 3,379 | $2.39 | 153,400 | D | S |
| 09 Feb, 2026 | Ingmar Bruns | Common Stock | D | 335 | $2.39 | 33,332 | D | S |
| 10 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 6,894 | $2.42 | 146,506 | D | S |
| 02 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 2,540 | $2.55 | 187,286 | D | S |
| 03 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 556 | $2.52 | 186,730 | D | S |
| 08 Jan, 2026 | Vincent Vultaggio | Stock Option (Right to Buy) | A | 100,000 | $0.00 | 100,000 | D | A |
| 08 Jan, 2026 | Ingmar Bruns | Stock Option (Right to Buy) | A | 365,000 | $0.00 | 365,000 | D | A |
| 08 Jan, 2026 | Julia Marie Eastland | Stock Option (Right to Buy) | A | 775,000 | $0.00 | 775,000 | D | A |
| 08 Jan, 2026 | James B Bucher | Stock Option (Right to Buy) | A | 100,000 | $0.00 | 100,000 | D | A |
| 31 Dec, 2025 | Group Walters | Common Stock | A | 6,459,973 | $1.20 | 13,509,973 | D | P |
| 15 Dec, 2025 | Capital Management Company, Lp Matrix | Common Stock, par value $0.001 per share | D | 7,500,000 | $1.33 | 6,459,973 | I | S |
| 01 Oct, 2025 | James B Bucher | Stock Option (Right to Buy) | A | 400,000 | $0.00 | 400,000 | D | A |
| 17 Jun, 2025 | Scott Dunseth Myers | Common Stock | A | 57,603 | $0.00 | 338,795 | D | A |
| 17 Jun, 2025 | David Michael Johnson | Common Stock | A | 57,603 | $0.00 | 250,421 | D | A |
| 17 Jun, 2025 | Luke Nathaniel Walker | Common Stock | A | 57,603 | $0.00 | 144,284 | D | A |
| 17 Jun, 2025 | Enoch Kariuki | Common Stock | A | 57,603 | $0.00 | 137,365 | D | A |