As of June 12, 2026, Halozyme Therapeutics's top three insider holders are Helen Torley (President And Ceo, 767.78K shares), Michael J. Labarre (Svp, Chief Technical Officer, 173.76K shares), Jean-Pierre Bizzari (Director, 66.81K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jeffrey William Henderson | - | 59,045 | 0 | 06 May, 2022 |
| Barbara Gayle Duncan | - | 19,919 | 0 | 02 May, 2025 |
| Michael J. Labarre | Svp, Chief Technical Officer | 173,756 | 0 | 27 Feb, 2025 |
| Helen Torley | President And Ceo | 767,780 | 0 | 07 Apr, 2026 |
| James M Daly | - | 32,438 | 0 | 06 May, 2022 |
| Akiko Moni Miyashita | - | 24,937 | 0 | 02 May, 2025 |
| Jean-Pierre Bizzari | - | 66,815 | 0 | 09 May, 2023 |
| Bernadette Connaughton | - | 40,123 | 0 | 06 Jan, 2026 |
| James Paul Lang | - | 889 | 0 | 06 Jan, 2026 |
| Masaru Matsuda | Svp, General Counsel | 20,049 | 0 | 07 Sep, 2021 |
| Mahesh Krishnan | - | 10,666 | 0 | 02 May, 2025 |
| Mark Howard Snyder | Svp, Chief Legal Officer | 47,610 | 0 | 24 Feb, 2026 |
| Nicole Labrosse | Svp, Chief Financial Officer | 38,494 | 0 | 24 Feb, 2026 |
| Cortney Caudill | Svp, Chief Operating Officer | 7,055 | 0 | 10 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Apr, 2026 | Helen Torley | Common Stock | A | 10,000 | $12.07 | 777,780 | D | M |
| 06 Apr, 2026 | Helen Torley | Common Stock | A | 10,000 | $12.07 | 777,780 | D | M |
| 06 Apr, 2026 | Helen Torley | Common Stock | D | 5,900 | $63.14 | 771,880 | D | S |
| 06 Apr, 2026 | Helen Torley | Common Stock | D | 5,900 | $63.14 | 771,880 | D | S |
| 06 Apr, 2026 | Helen Torley | Common Stock | D | 4,100 | $64.02 | 767,780 | D | S |
| 06 Apr, 2026 | Helen Torley | Common Stock | D | 4,100 | $64.02 | 767,780 | D | S |
| 06 Apr, 2026 | Helen Torley | Option to Purchase Common Stock | D | 10,000 | $12.07 | 101,923 | D | M |
| 06 Apr, 2026 | Helen Torley | Option to Purchase Common Stock | D | 10,000 | $12.07 | 101,923 | D | M |
| 01 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 01 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 01 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 19,000 | $65.36 | 768,780 | D | S |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 19,000 | $65.36 | 768,780 | D | S |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 19,000 | $65.36 | 768,780 | D | S |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 1,000 | $65.71 | 767,780 | D | S |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 1,000 | $65.71 | 767,780 | D | S |
| 01 Apr, 2026 | Helen Torley | Common Stock | D | 1,000 | $65.71 | 767,780 | D | S |
| 02 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 02 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 02 Apr, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |