13 insiders reported 224 Form 4 transactions for HALOZYME THERAPEUTICS, INC. (HALO) over the past 18 months (most recent 2026-08-19). Recent activity: Torley Helen (PRESIDENT AND CEO) Buy 20,000 shares, Torley Helen (PRESIDENT AND CEO) Sell 3,200 shares, Torley Helen (PRESIDENT AND CEO) Sell 500 shares, Torley Helen (PRESIDENT AND CEO) Sell 2,100 shares, Torley Helen (PRESIDENT AND CEO) Sell 9,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 3,200 | $344,848 |
| 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 | 900 | $89,062 |
| 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 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Buy | 20,000 | $368,200 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 7,200 | $765,778 |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 9,600 | $1.0M |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 5,703 | $587,882 |
| 2026-08-11 | Connaughton Bernadette | Director | Sell | 1,626 | $167,153 |
| 2026-07-09 | Torley Helen | PRESIDENT AND CEO | Buy | 1,923 | $23,211 |
| 2026-07-09 | Torley Helen | PRESIDENT AND CEO | Sell | 888 | $70,397 |
| 2026-07-09 | Torley Helen | PRESIDENT AND CEO | Sell | 1,035 | $82,994 |
| 2026-07-02 | RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Buy | 10,000 | $0 |
| 2026-07-02 | RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Sell | 5,408 | $423,284 |
| 2026-07-02 | Connaughton Bernadette | Director | Sell | 625 | $48,256 |
| 2026-07-02 | Connaughton Bernadette | Director | Sell | 1,000 | $76,395 |
| 2026-06-30 | Krishnan Mahesh | Director | Buy | 7,304 | $280,912 |
| 2026-06-30 | Krishnan Mahesh | Director | Sell | 7,304 | $547,800 |
| 2026-06-15 | Snyder Mark Howard | SVP, CHIEF LEGAL OFFICER | Buy | 5,034 | $0 |
Source: SEC Form 4 filings · as of 2026-08-19