As of the latest Form 4 filed Jul 9, 2026.
What Halozyme Therapeutics Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 54 most recent filings for HALO.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-09 | 2026-07-08 | Torley Helen PRESIDENT AND CEO | SSale | −1.03K | $80.19 | $83.0K | Yes (planned) | Form 4 ↗ |
| 2026-07-09 | 2026-07-08 | Torley Helen, PRESIDENT AND CEO | SSale | −888.00 | $79.28 | $70.4K | Yes (planned) | Form 4 ↗ |
| 2026-07-09 | 2026-07-08 | Torley Helen, PRESIDENT AND CEO | MExercise | +1.92K | $12.07 | $23.2K | Yes (planned) | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Connaughton Bernadette Director | SSale | −625.00 | $77.21 | $48.3K | Yes (planned) | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Connaughton Bernadette, Director | SSale | −1.00K | $76.40 | $76.4K | Yes (planned) | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | RAMSAY DAVID A EVP, PRESIDENT, DRUG DELIVERY | FTax | −5.41K | $78.27 | $423K | No | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | RAMSAY DAVID A, EVP, PRESIDENT, DRUG DELIVERY | MExercise | +10.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-30 | 2026-06-29 | Krishnan Mahesh Director | SSale | −7.30K | $75.00 | $548K | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-29 | Krishnan Mahesh, Director | MExercise | +7.30K | $38.46 | $281K | Yes (planned) | Form 4 ↗ |
| 2026-06-15 | 2026-06-12 | Snyder Mark Howard SVP, CHIEF LEGAL OFFICER | FTax | −2.71K | $69.50 | $189K | No | Form 4 ↗ |
| 2026-06-15 | 2026-06-12 | Snyder Mark Howard, SVP, CHIEF LEGAL OFFICER | MExercise | +5.03K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Torley Helen PRESIDENT AND CEO | SSale | −6.10K | $69.69 | $425K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Torley Helen, PRESIDENT AND CEO | SSale | −2.00K | $68.74 | $137K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Torley Helen, PRESIDENT AND CEO | SSale | −1.50K | $67.68 | $102K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Torley Helen, PRESIDENT AND CEO | SSale | −400.00 | $66.37 | $26.5K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Torley Helen, PRESIDENT AND CEO | MExercise | +10.0K | $12.07 | $121K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Torley Helen, PRESIDENT AND CEO | SSale | −3.40K | $66.75 | $227K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Torley Helen, PRESIDENT AND CEO | SSale | −16.6K | $66.31 | $1.10M | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Torley Helen, PRESIDENT AND CEO | MExercise | +20.0K | $12.07 | $241K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Torley Helen, PRESIDENT AND CEO | SSale | −5.40K | $68.35 | $369K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Torley Helen, PRESIDENT AND CEO | SSale | −13.0K | $67.41 | $876K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Torley Helen, PRESIDENT AND CEO | SSale | −1.61K | $66.39 | $107K | Yes (planned) | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Torley Helen, PRESIDENT AND CEO | MExercise | +20.0K | $12.07 | $241K | Yes (planned) | Form 4 ↗ |
| 2026-06-02 | 2026-06-01 | Connaughton Bernadette Director | SSale | −1.63K | $66.21 | $108K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Torley Helen PRESIDENT AND CEO | SSale | −600.00 | $70.81 | $42.5K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Torley Helen, PRESIDENT AND CEO | SSale | −3.95K | $69.79 | $276K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Torley Helen, PRESIDENT AND CEO | SSale | −3.35K | $68.88 | $231K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Torley Helen, PRESIDENT AND CEO | SSale | −2.10K | $68.10 | $143K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-13 | Torley Helen, PRESIDENT AND CEO | MExercise | +10.0K | $12.07 | $121K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | SSale | −2.80K | $73.12 | $205K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | SSale | −5.90K | $72.15 | $426K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | SSale | −9.80K | $71.37 | $700K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | SSale | −1.40K | $70.29 | $98.3K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | SSale | −100.00 | $67.85 | $6.78K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Torley Helen, PRESIDENT AND CEO | MExercise | +20.0K | $12.07 | $241K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Torley Helen, PRESIDENT AND CEO | SSale | −6.70K | $66.33 | $444K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Torley Helen, PRESIDENT AND CEO | SSale | −3.58K | $65.46 | $234K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Torley Helen, PRESIDENT AND CEO | SSale | −9.72K | $64.63 | $629K | Yes (planned) | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Torley Helen, PRESIDENT AND CEO | MExercise | +20.0K | $12.07 | $241K | Yes (planned) | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | Posard Matthew L. Director | AAward | +3.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | Krishnan Mahesh Director | AAward | +3.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | Lang James Paul Director | AAward | +3.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | Henderson Jeffrey William Director | AAward | +3.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | DUNCAN BARBARA GAYLE Director | AAward | +3.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-07 | 2026-05-05 | Connaughton Bernadette Director | AAward | +6.80K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-05 | 2026-05-01 | Connaughton Bernadette Director | SSale | −1.63K | $63.48 | $103K | Yes (planned) | Form 4 ↗ |
| 2026-04-07 | 2026-04-06 | Torley Helen PRESIDENT AND CEO | SSale | −4.10K | $64.02 | $262K | Yes (planned) | Form 4 ↗ |
| 2026-04-07 | 2026-04-06 | Torley Helen, PRESIDENT AND CEO | SSale | −5.90K | $63.14 | $373K | Yes (planned) | Form 4 ↗ |
| 2026-04-07 | 2026-04-06 | Torley Helen, PRESIDENT AND CEO | MExercise | +10.0K | $12.07 | $121K | Yes (planned) | Form 4 ↗ |
| 2026-03-10 | 2026-03-10 | Caudill Cortney SVP, CHIEF OPERATING OFFICER | SSale | −8.86K | $67.64 | $599K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-10 | Caudill Cortney, SVP, CHIEF OPERATING OFFICER | MExercise | +1.55K | $33.51 | $51.8K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Caudill Cortney, SVP, CHIEF OPERATING OFFICER | SSale | −2.10K | $68.25 | $143K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Caudill Cortney, SVP, CHIEF OPERATING OFFICER | SSale | −17.9K | $67.75 | $1.21M | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Caudill Cortney, SVP, CHIEF OPERATING OFFICER | MExercise | +20.0K | $33.51 | $670K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also HALO’s full analysis or the market-wide insider trading feed. The tabs above jump to HALO’s other SEC data.
Source: SEC Form 4 filings for HALO, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.