14 insiders reported 236 Form 4 transactions for HALOZYME THERAPEUTICS, INC. (HALO) over the past 18 months (most recent 2026-09-17). Recent activity: Posard Matthew L. (Director) Sell 3,100 shares, Posard Matthew L. (Director) Sell 3,000 shares, Posard Matthew L. (Director) Sell 8,896 shares, Posard Matthew L. (Director) Sell 4,000 shares, Torley Helen (PRESIDENT AND CEO) Sell 15,492 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Posard Matthew L. | Director | Sell | 3,100 | $329,009 |
| 2026-09-17 | Posard Matthew L. | Director | Sell | 3,000 | $320,484 |
| 2026-09-17 | Posard Matthew L. | Director | Sell | 8,896 | $961,124 |
| 2026-09-17 | Posard Matthew L. | Director | Sell | 4,000 | $435,964 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 15,492 | $1.7M |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 13,304 | $1.4M |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 6,596 | $711,187 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 100 | $10,867 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 14,588 | $1.6M |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 5,412 | $582,228 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 4,508 | $484,826 |
| 2026-09-02 | Appelhans Dannielle | Director | Buy | 1,161 | $0 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 900 | $89,062 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 500 | $50,228 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 2,100 | $213,709 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 9,000 | $922,977 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 7,500 | $776,115 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 5,703 | $587,882 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 4,897 | $509,827 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 9,400 | $985,816 |
Source: SEC Form 4 filings · as of 2026-09-17