Updated Jul 16, 2026 · Last SEC filing 2026-07-09
HALOZYME THERAPEUTICS, INC. (HALO) has filed 16 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-09. 5 Form 8-K material event filings were reported by HALO in the last 90 days. 4 Form 144 notices of proposed sale were filed for HALO stock. InsiderAlpha tracks every HALO SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Biological Products, (No Diagnostic Substances) (SIC 2836) |
|---|---|
| SEC CIK | 0001159036 |
| Form 4 filings (90d) | 16 |
|---|---|
| Form 8-K filings (90d) | 5 |
| Form 144 notices (90d) | 4 |
| Latest Form 4 filing | 2026-07-09 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Torley Helen | PRESIDENT AND CEO | M — Option exercise | 1.9K | $12.07 | $23K | SEC | |
| Torley Helen | PRESIDENT AND CEO | S — Open-market sale | 888 | $79.28 | $70K | SEC | |
| Torley Helen | PRESIDENT AND CEO | S — Open-market sale | 1.0K | $80.19 | $83K | SEC | |
| Connaughton Bernadette | Director | S — Open-market sale | 1.0K | $76.39 | $76K | SEC | |
| Connaughton Bernadette | Director | S — Open-market sale | 625 | $77.21 | $48K | SEC | |
| RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | M — Option exercise | 10.0K | $0.00 | — | SEC | |
| RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | F — Tax withholding / forfeiture | 5.4K | $78.27 | $423K | SEC | |
| Krishnan Mahesh | Director | S — Open-market sale | 7.3K | $75.00 | $548K | SEC | |
| Krishnan Mahesh | Director | M — Option exercise | 7.3K | $38.46 | $281K | SEC | |
| Snyder Mark Howard | SVP, CHIEF LEGAL OFFICER | M — Option exercise | 5.0K | $0.00 | — | SEC | |
| Snyder Mark Howard | SVP, CHIEF LEGAL OFFICER | F — Tax withholding / forfeiture | 2.7K | $69.50 | $189K | SEC | |
| Torley Helen | PRESIDENT AND CEO | S — Open-market sale | 6.1K | $69.69 | $425K | SEC | |
| Torley Helen | PRESIDENT AND CEO | M — Option exercise | 10.0K | $12.07 | $121K | SEC | |
| Torley Helen | PRESIDENT AND CEO | S — Open-market sale | 2.0K | $68.74 | $137K | SEC | |
| Torley Helen | PRESIDENT AND CEO | S — Open-market sale | 1.5K | $67.67 | $102K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for HALOZYME THERAPEUTICS, INC. (HALO). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Torley Helen | 37 | $9.42M |
| Connaughton Bernadette | 6 | $335K |
| RAMSAY DAVID A | 5 | $423K |
| Krishnan Mahesh | 5 | $829K |
| Snyder Mark Howard | 3 | $189K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in HALO insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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