List of insiders holdings for HALOZYME THERAPEUTICS INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | KIRK RANDAL J 10% Owner | 2019-11-05 16:53:10 | 7,046,385 0 | 7,046,385 | Form 13D |
| 2 | Frost Gregory Ian CEO, President | 2013-12-11 19:33:00 | 3,676,911 0 | 3,676,911 | Form 4 |
| 3 | LECHNER IRA M Director | 2004-03-19 14:12:33 | 100,000 1,052,329 | 1,152,329 | Form 3 |
| 4 | MERCALDO EDWARD L Director | 2004-03-19 14:13:19 | 126,944 692,994 | 819,938 | Form 3 |
| 5 | Torley Helen PRESIDENT AND CEO | 2026-06-03 20:06:58 | 813,549 0 | 813,549 | Form 4 |
| 6 | Wilson Mark S Vice President | 2005-02-11 15:46:01 | 544,240 0 | 544,240 | Form 3/A |
| 7 | Rynard Carolyn Vice President | 2005-02-11 15:55:34 | 494,240 0 | 494,240 | Form 3/A |
| 8 | FALBERG KATHRYN E Director | 2016-05-06 16:47:56 | 358,253 0 | 358,253 | Form 4 |
| 9 | Engler Robert Director | 2014-08-18 16:59:47 | 273,176 0 | 273,176 | Form 4 |
| 10 | Leff Jonathan A VP, Chief Medical Officer | 2009-08-07 20:20:32 | 200,000 0 | 200,000 | Form 4 |
| 11 | Armour Alison A. SVP, Research & Development | 2019-06-04 16:44:05 | 195,278 0 | 195,278 | Form 4 |
| 12 | MATSUI CONNIE Director | 2024-12-03 16:05:40 | 183,035 0 | 183,035 | Form 4 |
| 13 | PATTON JOHN STUART Director | 2014-08-21 17:07:42 | 179,876 0 | 179,876 | Form 4 |
| 14 | Kelley Kenneth J Director | 2021-04-14 16:19:55 | 179,833 0 | 179,833 | Form 4 |
| 15 | LaBarre Michael J. SVP, CHIEF TECHNICAL OFFICER | 2025-02-27 18:32:38 | 173,756 0 | 173,756 | Form 4 |
| 16 | Yocum Richard C VP-Clinical Development | 2008-02-08 17:50:38 | 150,943 0 | 150,943 | Form 4 |
| 17 | Caudill Cortney SVP, CHIEF OPERATING OFFICER | 2026-03-10 19:18:55 | 143,957 0 | 143,957 | Form 4 |
| 18 | Stelzer Laurie SVP, Chief Financial Officer | 2020-02-24 20:03:57 | 127,559 10,000 | 137,559 | Form 4 |
| 19 | Hooper Matthew Vice Pres & General Counsel | 2007-11-13 16:35:47 | 125,000 0 | 125,000 | Form 4 |
| 20 | Lim Jonathan E Chief Executive Officer | 2010-02-08 17:06:43 | 120,000 0 | 120,000 | Form 4 |
| 21 | Gergen Mark J SVP, Chief Operating Officer | 2017-02-24 16:05:43 | 118,493 0 | 118,493 | Form 4 |
| 22 | Countouriotis Athena SVP and Chief Medical Officer | 2017-02-24 16:06:20 | 118,493 0 | 118,493 | Form 4 |
| 23 | GUSTAFSON KURT A Vice President and CFO | 2013-02-06 18:58:12 | 99,200 0 | 99,200 | Form 4 |
| 24 | LaBrosse Nicole SVP, CHIEF FINANCIAL OFFICER | 2026-02-24 18:14:46 | 90,846 0 | 90,846 | Form 4 |
| 25 | Posard Matthew L. Director | 2026-05-07 19:04:36 | 83,875 0 | 83,875 | Form 4 |
| 26 | LIU JEAN I VP & General Counsel | 2014-02-10 17:55:14 | 81,500 0 | 81,500 | Form 4 |
| 27 | Shaffer James P VP & Chief Commercial Officer | 2014-02-10 17:57:12 | 81,500 0 | 81,500 | Form 4 |
| 28 | BIZZARI JEAN-PIERRE Director | 2023-05-09 18:09:24 | 78,186 0 | 78,186 | Form 4 |
| 29 | Hickey Benjamin SVP, Chief Commerical Officer | 2019-10-01 19:10:12 | 73,873 0 | 73,873 | Form 4 |
| 30 | LEONHARDT HARRY J SVP, GC | 2019-04-15 16:08:01 | 66,373 0 | 66,373 | Form 4 |
| 31 | Snyder Mark Howard SVP, CHIEF LEGAL OFFICER | 2026-06-15 16:09:46 | 59,997 0 | 59,997 | Form 4 |
| 32 | Thornton Steven T Director | 2008-05-09 18:26:18 | 50,000 0 | 50,000 | Form 4 |
| 33 | Sun Elaine D SVP, Chief Financial Officer | 2021-04-01 19:43:33 | 44,618 0 | 44,618 | Form 4 |
| 34 | Connaughton Bernadette Director | 2026-06-02 17:20:34 | 43,669 0 | 43,669 | Form 4 |
| 35 | Henderson Jeffrey William Director | 2026-05-07 19:02:55 | 42,612 0 | 42,612 | Form 4 |
| 36 | Chondros Dimitrios SVP, Chief Medical Officer | 2019-08-05 20:11:39 | 38,584 0 | 38,584 | Form 4 |
| 37 | Miyashita Akiko Moni Director | 2025-05-02 16:09:44 | 30,687 0 | 30,687 | Form 4 |
| 38 | DUNCAN BARBARA GAYLE Director | 2026-05-07 19:02:11 | 29,755 0 | 29,755 | Form 4 |
| 39 | LITTLE ROBERT J VP, Chief Commercial Officer | 2010-02-08 17:52:41 | 28,000 0 | 28,000 | Form 4 |
| 40 | Matsuda Masaru SVP, General Counsel | 2021-09-07 17:42:24 | 26,932 0 | 26,932 | Form 4 |
| 41 | DAY MELLISSA former officer, director Director | 2004-03-12 13:24:02 | 22,374 0 | 22,374 | Form 4 |
| 42 | Daly James M Director | 2023-08-15 16:04:28 | 20,503 0 | 20,503 | Form 4 |
| 43 | Fallon William J VP, Manufacturing & Operations | 2011-05-11 19:44:04 | 19,000 0 | 19,000 | Form 4 |
| 44 | Krishnan Mahesh Director | 2026-06-30 17:25:10 | 15,962 0 | 15,962 | Form 4 |
| 45 | KEELER MITCH former off., dir., 10% owner | 2004-03-12 13:52:53 | 15,000 0 | 15,000 | Form 13G |
| 46 | Shepard H. Michael VP, Chief Scientific Officer | 2013-09-11 18:12:07 | 13,198 0 | 13,198 | Form 4 |
| 47 | Lang James Paul Director | 2026-05-07 19:03:43 | 10,725 0 | 10,725 | Form 4 |
| 48 | RAMSAY DAVID A Interim CFO | 2026-04-02 18:29:18 | 10,000 0 | 10,000 | Form 4 |
| 49 | Kennard Don A Vice President, Regulatory Aff | 2007-05-23 16:16:59 | 0 0 | 0 | Form 4 |
| 50 | Snellgrove Darren SVP, Chief Financial Officer | 2026-06-09 16:59:11 | 0 0 | 0 | Form 3 |