Halozyme Therapeutics's three largest insider shareholders as of March 23, 2026 are Helen Torley (President And Ceo, 767.78K shares), Connie Matsui (Director, 183.03K shares), Kenneth J Kelley (Director, 179.83K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Helen Torley | President And Ceo | 767,780 | 0 | 04 Mar, 2026 |
| Connie Matsui | 183,035 | 0 | 03 Dec, 2024 | |
| Kenneth J Kelley | 179,833 | 0 | 14 Apr, 2021 | |
| Michael J. Labarre | Svp, Chief Technical Officer | 173,756 | 0 | 27 Feb, 2025 |
| Matthew L. Posard | 74,039 | 0 | 02 May, 2025 | |
| Jean-Pierre Bizzari | 66,815 | 0 | 09 May, 2023 | |
| Mark Howard Snyder | Svp, Chief Legal Officer | 47,610 | 0 | 24 Feb, 2026 |
| Bernadette Connaughton | 40,123 | 0 | 06 Jan, 2026 | |
| Nicole Labrosse | Svp, Chief Financial Officer | 38,494 | 0 | 24 Feb, 2026 |
| Jeffrey William Henderson | 32,776 | 0 | 02 May, 2025 | |
| Akiko Moni Miyashita | 24,937 | 0 | 02 May, 2025 | |
| James M Daly | 20,503 | 0 | 15 Aug, 2023 | |
| Masaru Matsuda | Svp, General Counsel | 20,049 | 0 | 07 Sep, 2021 |
| Barbara Gayle Duncan | 19,919 | 0 | 02 May, 2025 | |
| Elaine D Sun | Svp, Chief Financial Officer | 14,018 | 0 | 01 Apr, 2021 |
| Mahesh Krishnan | 10,666 | 0 | 02 May, 2025 | |
| Cortney Caudill | Svp, Chief Operating Officer | 7,055 | 0 | 10 Mar, 2026 |
| James Paul Lang | 889 | 0 | 06 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 Mar, 2026 | Cortney Caudill | Common Stock | A | 20,000 | $33.51 | 34,366 | D | M |
| 09 Mar, 2026 | Cortney Caudill | Common Stock | D | 17,900 | $67.75 | 16,466 | D | S |
| 09 Mar, 2026 | Cortney Caudill | Common Stock | D | 2,100 | $68.25 | 14,366 | D | S |
| 10 Mar, 2026 | Cortney Caudill | Common Stock | A | 1,546 | $33.51 | 15,912 | D | M |
| 10 Mar, 2026 | Cortney Caudill | Common Stock | D | 8,857 | $67.64 | 7,055 | D | S |
| 09 Mar, 2026 | Cortney Caudill | Option to Purchase Common Stock | D | 20,000 | $33.51 | 69,224 | D | M |
| 10 Mar, 2026 | Cortney Caudill | Option to Purchase Common Stock | D | 1,546 | $33.51 | 67,678 | D | M |
| 02 Mar, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 02 Mar, 2026 | Helen Torley | Common Stock | D | 4,100 | $69.20 | 783,680 | D | S |
| 02 Mar, 2026 | Helen Torley | Common Stock | D | 15,322 | $69.80 | 768,358 | D | S |
| 02 Mar, 2026 | Helen Torley | Common Stock | D | 578 | $70.46 | 767,780 | D | S |
| 03 Mar, 2026 | Helen Torley | Common Stock | A | 20,000 | $12.07 | 787,780 | D | M |
| 03 Mar, 2026 | Helen Torley | Common Stock | D | 13,481 | $68.85 | 774,299 | D | S |
| 03 Mar, 2026 | Helen Torley | Common Stock | D | 6,519 | $69.33 | 767,780 | D | S |
| 04 Mar, 2026 | Helen Torley | Common Stock | A | 10,000 | $12.07 | 777,780 | D | M |
| 04 Mar, 2026 | Helen Torley | Common Stock | D | 7,329 | $69.94 | 770,451 | D | S |
| 04 Mar, 2026 | Helen Torley | Common Stock | D | 2,671 | $70.95 | 767,780 | D | S |
| 02 Mar, 2026 | Helen Torley | Option to Purchase Common Stock | D | 20,000 | $12.07 | 181,923 | D | M |
| 03 Mar, 2026 | Helen Torley | Option to Purchase Common Stock | D | 20,000 | $12.07 | 161,923 | D | M |
| 04 Mar, 2026 | Helen Torley | Option to Purchase Common Stock | D | 10,000 | $12.07 | 151,923 | D | M |