HALO
Halozyme Therapeutics Inc
NASDAQ: HALO · HEALTHCARE · BIOTECHNOLOGY
$107.20
+0.19% today
Updated 2026-09-11
Market cap
$12.29B
P/E ratio
31.86
P/S ratio
7.39x
EPS (TTM)
$3.40
Dividend yield
—
52W range
$61 – $111
Volume
1.9M
Halozyme Therapeutics Inc (HALO) Insider transactions
Net insider activity
Net buying (38,841 shares)
Buy transactions
34
Sell transactions
66
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-09-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-09-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 15,492 | $107.15 | $1.66M |
| 2026-09-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 4,508 | $107.55 | $484826.38 |
| 2026-09-10 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-09-10 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-09-10 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 14,588 | $107.01 | $1.56M |
| 2026-09-10 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 5,412 | $107.58 | $582228.37 |
| 2026-09-09 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-09-09 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-09-09 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 13,304 | $107.22 | $1.43M |
| 2026-09-09 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 6,596 | $107.82 | $711187.32 |
| 2026-09-09 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 100 | $108.67 | $10867.00 |
| 2026-09-01 | APPELHANS, DANNIELLE | Director | Buy | 1,161 | — | — |
| 2026-09-01 | APPELHANS, DANNIELLE | Director | Buy | 1,778 | — | — |
| 2026-08-19 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-08-19 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-08-19 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 9,600 | $107.22 | $1.03M |
| 2026-08-19 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 7,200 | $106.36 | $765777.60 |
| 2026-08-19 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 3,200 | $107.77 | $344848.00 |
| 2026-08-18 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-08-18 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-08-18 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 9,400 | $104.87 | $985815.60 |
| 2026-08-18 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 5,703 | $103.08 | $587882.35 |
| 2026-08-18 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 4,897 | $104.11 | $509826.67 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $18.41 | $368200.00 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $18.41 | $368200.00 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 9,000 | $102.55 | $922977.00 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 7,500 | $103.48 | $776115.00 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 2,100 | $101.77 | $213708.60 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 900 | $98.96 | $89062.20 |
| 2026-08-17 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 500 | $100.46 | $50228.50 |
| 2026-08-10 | CONNAUGHTON, BERNADETTE | Director | Sale | 1,626 | $102.80 | $167152.80 |
| 2026-07-08 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 1,923 | $12.07 | $23210.61 |
| 2026-07-08 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 1,923 | $12.07 | $23210.61 |
| 2026-07-08 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 1,035 | $80.19 | $82993.54 |
| 2026-07-08 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 888 | $79.28 | $70397.09 |
| 2026-07-01 | SNELLGROVE, DARREN | SVP, Chief Financial Officer | Buy | 41,554 | — | — |
| 2026-07-01 | SNELLGROVE, DARREN | SVP, Chief Financial Officer | Buy | 127,432 | — | — |
| 2026-07-01 | RAMSAY, DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Buy | 16,232 | — | — |
| 2026-07-01 | RAMSAY, DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Buy | 39,823 | — | — |
| 2026-07-01 | CONNAUGHTON, BERNADETTE | Director | Sale | 1,000 | $76.40 | $76395.00 |
| 2026-07-01 | CONNAUGHTON, BERNADETTE | Director | Sale | 625 | $77.21 | $48255.63 |
| 2026-06-30 | RAMSAY, DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Sale | 10,000 | — | — |
| 2026-06-30 | RAMSAY, DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Buy | 10,000 | — | — |
| 2026-06-30 | RAMSAY, DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Sale | 5,408 | $78.27 | $423284.16 |
| 2026-06-29 | KRISHNAN, MAHESH | Director | Sale | 7,304 | — | — |
| 2026-06-29 | KRISHNAN, MAHESH | Director | Sale | 7,304 | $75.00 | $547800.00 |
| 2026-06-12 | SNYDER, MARK HOWARD | SVP, CHIEF LEGAL OFFICER | Sale | 5,034 | — | — |
| 2026-06-12 | SNYDER, MARK HOWARD | SVP, CHIEF LEGAL OFFICER | Buy | 5,034 | — | — |
| 2026-06-12 | SNYDER, MARK HOWARD | SVP, CHIEF LEGAL OFFICER | Sale | 2,715 | $69.50 | $188692.50 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 10,000 | $12.07 | $120700.00 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 10,000 | $12.07 | $120700.00 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 6,100 | $69.69 | $425121.20 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 2,000 | $68.74 | $137472.00 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 1,500 | $67.68 | $101512.50 |
| 2026-06-03 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 400 | $66.37 | $26547.20 |
| 2026-06-02 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $12.07 | $241400.00 |
| 2026-06-02 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $12.07 | $241400.00 |
| 2026-06-02 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 16,600 | $66.31 | $1.10M |
| 2026-06-02 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 3,400 | $66.75 | $226933.00 |
| 2026-06-01 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $12.07 | $241400.00 |
| 2026-06-01 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $12.07 | $241400.00 |
| 2026-06-01 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 12,989 | $67.41 | $875588.49 |
| 2026-06-01 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 5,401 | $68.35 | $369136.75 |
| 2026-06-01 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 1,610 | $66.39 | $106884.68 |
| 2026-06-01 | CONNAUGHTON, BERNADETTE | Director | Sale | 1,625 | $66.21 | $107591.25 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 10,000 | $12.07 | $120700.00 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 10,000 | $12.07 | $120700.00 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 3,950 | $69.79 | $275658.65 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 3,350 | $68.88 | $230748.00 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 2,100 | $68.10 | $143014.20 |
| 2026-05-13 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 600 | $70.81 | $42487.20 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $12.07 | $241400.00 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $12.07 | $241400.00 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 9,802 | $71.37 | $699568.74 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 5,900 | $72.15 | $425673.20 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 2,800 | $73.12 | $204738.80 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 1,398 | $70.29 | $98261.23 |
| 2026-05-12 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 100 | $67.85 | $6785.00 |
| 2026-05-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 20,000 | $12.07 | $241400.00 |
| 2026-05-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 20,000 | $12.07 | $241400.00 |
| 2026-05-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 9,725 | $64.63 | $628536.47 |
| 2026-05-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 6,700 | $66.33 | $444390.90 |
| 2026-05-11 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 3,575 | $65.46 | $234012.35 |
| 2026-05-05 | POSARD, MATTHEW L. | Director | Buy | 6,040 | — | — |
| 2026-05-05 | POSARD, MATTHEW L. | Director | Buy | 3,796 | — | — |
| 2026-05-05 | LANG, JAMES PAUL | Director | Buy | 6,040 | — | — |
| 2026-05-05 | LANG, JAMES PAUL | Director | Buy | 3,796 | — | — |
| 2026-05-05 | KRISHNAN, MAHESH | Director | Buy | 6,040 | — | — |
| 2026-05-05 | KRISHNAN, MAHESH | Director | Buy | 3,796 | — | — |
| 2026-05-05 | HENDERSON, JEFFREY WILLIAM | Director | Buy | 6,040 | — | — |
| 2026-05-05 | HENDERSON, JEFFREY WILLIAM | Director | Buy | 3,796 | — | — |
| 2026-05-05 | DUNCAN, BARBARA GAYLE | Director | Buy | 6,040 | — | — |
| 2026-05-05 | DUNCAN, BARBARA GAYLE | Director | Buy | 3,796 | — | — |
| 2026-05-05 | CONNAUGHTON, BERNADETTE | Director | Buy | 6,040 | — | — |
| 2026-05-05 | CONNAUGHTON, BERNADETTE | Director | Buy | 6,796 | — | — |
| 2026-05-01 | CONNAUGHTON, BERNADETTE | Director | Sale | 1,625 | $63.48 | $103155.00 |
| 2026-04-06 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Sale | 10,000 | $12.07 | $120700.00 |
| 2026-04-06 | TORLEY, HELEN | Director, PRESIDENT AND CEO | Buy | 10,000 | $12.07 | $120700.00 |
Frequently asked questions
Are HALO insiders buying or selling?
Over the transactions on record, HALO insiders have been net sellers, with about $24.89M in stock sold across 66 sales, against 14 open-market purchases.
Does insider selling at HALO mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which HALO insiders are selling the most?
Recent selling is concentrated in a few names. TORLEY, HELEN accounts for the largest share on record, with about $23.23M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.