HALOZYME THERAPEUTICS, INC. insider trading
HALO$109.86+2.92 (+2.73%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+53.2%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ3 '25Q4 '25Q1 '26Q2 '26Q3 '26Q4 '26
Unlock quarterly net flowKey players
- HTHelen Torley0.6765%
- CMConnie Matsui0.1613%
- MJMichael J. LaBarre0.1531%
- MLMatthew L. Posard0.0472%
- MHMark Howard Snyder0.044%
- BCBernadette Connaughton0.0356%
- NLNicole LaBrosse0.0339%
- JWJeffrey William Henderson0.0322%
- AMAkiko Moni Miyashita0.022%
- BGBarbara Gayle Duncan0.0209%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| HALO | Matthew L. Posard | Open market sell$11K | -0.2% | $110.04 | $11K | Oct 1, 2026 | Oct 2, 2026 |
| HALO | Matthew L. Posard | Open market sell$121K | -2.0% | $109.57 | $121K | Oct 1, 2026 | Oct 2, 2026 |
| HALO | Matthew L. Posard | Open market sell$358K | -5.7% | $108.45 | $358K | Oct 1, 2026 | Oct 2, 2026 |
| HALO | Matthew L. Posard | Open market sell$78.2K | -1.2% | $107.17 | $78.2K | Oct 1, 2026 | Oct 2, 2026 |
| HALO | Matthew L. Posard | Open market sell$436K | -6.4% | $108.99 | $436K | Sep 16, 2026 | Sep 17, 2026 |
| HALO | Matthew L. Posard | Open market sell$961K | -12.4% | $108.04 | $961K | Sep 16, 2026 | Sep 17, 2026 |
| HALO | Matthew L. Posard | Open market sell$320K | -4.0% | $106.83 | $320K | Sep 16, 2026 | Sep 17, 2026 |
| HALO | Matthew L. Posard | Open market sell$329K | -4.0% | $106.13 | $329K | Sep 16, 2026 | Sep 17, 2026 |
| HALO | Bernadette Connaughton | Open market sell$167K | -3.9% | $102.80 | $167K | Aug 10, 2026 | Aug 11, 2026 |
| HALO | Bernadette Connaughton | Open market sell$48.3K | -1.5% | $77.21 | $48.3K | Jul 1, 2026 | Jul 2, 2026 |
| HALO | Bernadette Connaughton | Open market sell$76.4K | -2.3% | $76.40 | $76.4K | Jul 1, 2026 | Jul 2, 2026 |
| HALO | Bernadette Connaughton | Open market sell$108K | -3.6% | $66.21 | $108K | Jun 1, 2026 | Jun 2, 2026 |
| HALO | Bernadette Connaughton | Open market sell$103K | -4.1% | $63.48 | $103K | May 1, 2026 | May 5, 2026 |
| HALO | Bernadette Connaughton | Open market sell$141K | -4.8% | $70.25 | $141K | Jan 5, 2026 | Jan 6, 2026 |
| HALO | Bernadette Connaughton | Open market sell$59.4K | -1.9% | $71.60 | $59.4K | Dec 1, 2025 | Dec 1, 2025 |
| HALO | Bernadette Connaughton | Open market sell$137K | -4.5% | $68.48 | $137K | Nov 10, 2025 | Nov 12, 2025 |