Halozyme (HALO) — insider trading
Health Care · NASDAQ
Halozyme (HALO) has 128 reported SEC Form 4 insider transactions in our data, including 57 open-market sales among the most recent 100 (latest 2026-10-08).
Recent Form 4 transactions
Showing the 100 most recent of 128 recorded transactions. See all on SEC EDGAR →
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 200 | $110.51 | $22.1K | Form 4 |
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 11,900 | $110.00 | $1.31M | Form 4 |
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 3,090 | $108.91 | $336.5K | Form 4 |
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 4,810 | $108.18 | $520.3K | Form 4 |
| 2026-10-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 200 | $113.69 | $22.7K | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 900 | $112.78 | $101.5K | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 10,300 | $111.84 | $1.15M | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 8,600 | $111.03 | $954.9K | Form 4 |
| 2026-10-07 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 1,780 | $110.81 | $197.2K | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 9,920 | $109.89 | $1.09M | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 6,000 | $109.33 | $656.0K | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 2,300 | $107.90 | $248.2K | Form 4 |
| 2026-10-06 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-10-01 | Posard Matthew L. | Director | Open-market sale | 100 | $110.04 | $11.0K | Form 4 |
| 2026-10-01 | Posard Matthew L. | Director | Open-market sale | 1,100 | $109.57 | $120.5K | Form 4 |
| 2026-10-01 | Posard Matthew L. | Director | Open-market sale | 3,300 | $108.45 | $357.9K | Form 4 |
| 2026-10-01 | Posard Matthew L. | Director | Open-market sale | 730 | $107.17 | $78.2K | Form 4 |
| 2026-10-01 | Daly James M | Director | Grant / award / vesting (derivative) | 1,775 | — | $0 | Form 4 |
| 2026-10-01 | Daly James M | Director | Grant / award / vesting | 1,169 | — | $0 | Form 4 |
| 2026-09-16 | Posard Matthew L. | Director | Open-market sale | 4,000 | $108.99 | $436.0K | Form 4 |
| 2026-09-16 | Posard Matthew L. | Director | Open-market sale | 8,896 | $108.04 | $961.1K | Form 4 |
| 2026-09-16 | Posard Matthew L. | Director | Open-market sale | 3,000 | $106.83 | $320.5K | Form 4 |
| 2026-09-16 | Posard Matthew L. | Director | Open-market sale | 3,100 | $106.13 | $329.0K | Form 4 |
| 2026-09-11 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-11 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 4,508 | $107.55 | $484.8K | Form 4 |
| 2026-09-11 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 15,492 | $107.15 | $1.66M | Form 4 |
| 2026-09-11 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-10 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-10 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 5,412 | $107.58 | $582.2K | Form 4 |
| 2026-09-10 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 14,588 | $107.01 | $1.56M | Form 4 |
| 2026-09-10 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-09 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-09 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 100 | $108.67 | $10.9K | Form 4 |
| 2026-09-09 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 6,596 | $107.82 | $711.2K | Form 4 |
| 2026-09-09 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 13,304 | $107.22 | $1.43M | Form 4 |
| 2026-09-09 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-09-01 | Appelhans Dannielle | Director | Grant / award / vesting (derivative) | 1,778 | — | $0 | Form 4 |
| 2026-09-01 | Appelhans Dannielle | Director | Grant / award / vesting | 1,161 | — | $0 | Form 4 |
| 2026-08-19 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-19 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 3,200 | $107.77 | $344.8K | Form 4 |
| 2026-08-19 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 9,600 | $107.22 | $1.03M | Form 4 |
| 2026-08-19 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 7,200 | $106.36 | $765.8K | Form 4 |
| 2026-08-19 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-18 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-18 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 9,400 | $104.87 | $985.8K | Form 4 |
| 2026-08-18 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 4,897 | $104.11 | $509.8K | Form 4 |
| 2026-08-18 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 5,703 | $103.08 | $587.9K | Form 4 |
| 2026-08-18 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 7,500 | $103.48 | $776.1K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 9,000 | $102.55 | $923.0K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 2,100 | $101.77 | $213.7K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 500 | $100.46 | $50.2K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 900 | $98.96 | $89.1K | Form 4 |
| 2026-08-17 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $18.41 | $368.2K | Form 4 |
| 2026-08-10 | Connaughton Bernadette | Director | Open-market sale | 1,626 | $102.80 | $167.2K | Form 4 |
| 2026-07-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 1,923 | $12.07 | $23.2K | Form 4 |
| 2026-07-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 1,035 | $80.19 | $83.0K | Form 4 |
| 2026-07-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 888 | $79.28 | $70.4K | Form 4 |
| 2026-07-08 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 1,923 | $12.07 | $23.2K | Form 4 |
| 2026-07-01 | Connaughton Bernadette | Director | Open-market sale | 625 | $77.21 | $48.3K | Form 4 |
| 2026-07-01 | Connaughton Bernadette | Director | Open-market sale | 1,000 | $76.40 | $76.4K | Form 4 |
| 2026-07-01 | Snellgrove Darren | Officer (SVP, Chief Financial Officer) | Grant / award / vesting (derivative) | 127,432 | — | $0 | Form 4 |
| 2026-07-01 | Snellgrove Darren | Officer (SVP, Chief Financial Officer) | Grant / award / vesting (derivative) | 41,554 | — | $0 | Form 4 |
| 2026-07-01 | RAMSAY DAVID A | Officer (EVP, PRESIDENT, DRUG DELIVERY) | Grant / award / vesting (derivative) | 39,823 | — | $0 | Form 4 |
| 2026-07-01 | RAMSAY DAVID A | Officer (EVP, PRESIDENT, DRUG DELIVERY) | Grant / award / vesting (derivative) | 16,232 | — | $0 | Form 4 |
| 2026-06-30 | RAMSAY DAVID A | Officer (EVP, PRESIDENT, DRUG DELIVERY) | Option exercise / conversion (derivative) | 10,000 | — | $0 | Form 4 |
| 2026-06-30 | RAMSAY DAVID A | Officer (EVP, PRESIDENT, DRUG DELIVERY) | Shares withheld for taxes / exercise cost | 5,408 | $78.27 | $423.3K | Form 4 |
| 2026-06-30 | RAMSAY DAVID A | Officer (EVP, PRESIDENT, DRUG DELIVERY) | Option exercise / conversion | 10,000 | — | $0 | Form 4 |
| 2026-06-29 | Krishnan Mahesh | Director | Option exercise / conversion (derivative) | 7,304 | — | $0 | Form 4 |
| 2026-06-29 | Krishnan Mahesh | Director | Open-market sale | 7,304 | $75.00 | $547.8K | Form 4 |
| 2026-06-29 | Krishnan Mahesh | Director | Option exercise / conversion | 7,304 | $38.46 | $280.9K | Form 4 |
| 2026-06-12 | Snyder Mark Howard | Officer (SVP, CHIEF LEGAL OFFICER) | Option exercise / conversion (derivative) | 5,034 | — | $0 | Form 4 |
| 2026-06-12 | Snyder Mark Howard | Officer (SVP, CHIEF LEGAL OFFICER) | Shares withheld for taxes / exercise cost | 2,715 | $69.50 | $188.7K | Form 4 |
| 2026-06-12 | Snyder Mark Howard | Officer (SVP, CHIEF LEGAL OFFICER) | Option exercise / conversion | 5,034 | — | $0 | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 10,000 | $12.07 | $120.7K | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 6,100 | $69.69 | $425.1K | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 2,000 | $68.74 | $137.5K | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 1,500 | $67.68 | $101.5K | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 400 | $66.37 | $26.5K | Form 4 |
| 2026-06-03 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 10,000 | $12.07 | $120.7K | Form 4 |
| 2026-06-02 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $12.07 | $241.4K | Form 4 |
| 2026-06-02 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 3,400 | $66.75 | $226.9K | Form 4 |
| 2026-06-02 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 16,600 | $66.31 | $1.10M | Form 4 |
| 2026-06-02 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $12.07 | $241.4K | Form 4 |
| 2026-06-01 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 20,000 | $12.07 | $241.4K | Form 4 |
| 2026-06-01 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 5,401 | $68.35 | $369.1K | Form 4 |
| 2026-06-01 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 12,989 | $67.41 | $875.6K | Form 4 |
| 2026-06-01 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 1,610 | $66.39 | $106.9K | Form 4 |
| 2026-06-01 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion | 20,000 | $12.07 | $241.4K | Form 4 |
| 2026-06-01 | Connaughton Bernadette | Director | Open-market sale | 1,625 | $66.21 | $107.6K | Form 4 |
| 2026-05-13 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Option exercise / conversion (derivative) | 10,000 | $12.07 | $120.7K | Form 4 |
| 2026-05-13 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 600 | $70.81 | $42.5K | Form 4 |
| 2026-05-13 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 3,950 | $69.79 | $275.7K | Form 4 |
| 2026-05-13 | Torley Helen | Director, Officer (PRESIDENT AND CEO) | Open-market sale | 3,350 | $68.88 | $230.7K | Form 4 |
Ask the chat about HALO's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Halozyme (HALO).
Last updated 2026-10-08 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.