Zentalis Pharmaceuticals's three largest insider shareholders as of May 30, 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 |
| Scott Dunseth Myers | - | 338,795 | 0 | 18 Jun, 2025 |
| Anthony Y Sun | President Ceo | 1,175,589 | 0 | 05 Apr, 2022 |
| Capital Management Company, Lp Matrix | - | 0 | 6,459,973 | 15 Dec, 2025 |
| Julia Marie Eastland | Ceo President | 79,133 | 0 | 10 Feb, 2026 |
| Cam Gallagher | President, Interim Cfo | 633,680 | 0 | 31 May, 2024 |
| Diana Hausman | Chief Medical Officer | 373,876 | 0 | 09 May, 2024 |
| Luke Nathaniel Walker | - | 144,284 | 0 | 18 Jun, 2025 |
| Mark Lackner | Chief Scientific Officer | 512,856 | 0 | 05 Feb, 2025 |
| Melissa B, Epperly | Chief Financial Officer | 451,449 | 0 | 12 Feb, 2024 |
| Kevin D. Bunker | Chief Scientific Officer | 834,931 | 0 | 21 Dec, 2023 |
| Dimitris Voliotis | Svp, Clinical Development | 15,978 | 0 | 14 Feb, 2022 |
| David Michael Johnson | - | 250,421 | 0 | 18 Jun, 2025 |
| Kimberly Blackwell | Chief Executive Officer | 484,145 | 0 | 05 Feb, 2024 |
| Alexis Pinto | Chief Legal Officer | 22,240 | 0 | 14 Feb, 2022 |
| Ingmar Bruns | Chief Medical Officer | 33,332 | 0 | 10 Feb, 2026 |
| Jan Skvarka | - | 207,154 | 0 | 18 Jun, 2025 |
| Enoch Kariuki | - | 137,365 | 0 | 18 Jun, 2025 |
| Andrea Paul | Chief Legal Officer | 1,070,784 | 0 | 05 Feb, 2025 |
| Carrie Brownstein | Chief Medical Officer | 105,685 | 0 | 06 Oct, 2023 |
| Iris Roth | Chief Operating Officer | 52,500 | 0 | 02 Mar, 2023 |
| Vincent Vultaggio | Pao And Pfo | 146,506 | 0 | 10 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Feb, 2026 | Ingmar Bruns | Common Stock | D | 2,962 | $2.43 | 33,667 | D | S |
| 06 Feb, 2026 | Julia Marie Eastland | Common Stock | D | 7,866 | $2.43 | 80,022 | D | S |
| 06 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 29,951 | $2.43 | 156,779 | D | S |
| 09 Feb, 2026 | Vincent Vultaggio | Common Stock | D | 3,379 | $2.39 | 153,400 | D | S |
| 09 Feb, 2026 | Julia Marie Eastland | Common Stock | D | 889 | $2.39 | 79,133 | 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 | James B Bucher | Stock Option (Right to Buy) | A | 100,000 | $0.00 | 100,000 | 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 | Ingmar Bruns | Stock Option (Right to Buy) | A | 365,000 | $0.00 | 365,000 | D | A |
| 08 Jan, 2026 | Vincent Vultaggio | 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 |
| 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 | Luke Nathaniel Walker | Common Stock | A | 57,603 | $0.00 | 144,284 | D | A |
| 17 Jun, 2025 | Scott Dunseth Myers | Common Stock | A | 57,603 | $0.00 | 338,795 | D | A |
| 17 Jun, 2025 | Enoch Kariuki | Common Stock | A | 57,603 | $0.00 | 137,365 | D | A |