Halozyme Therapeutics, Inc. (HALO) Insider Trading
Over the last 3 months, HALO insiders made 0 open-market buys and 17 sales, a net sale of -$7.3M (SEC Form 4). Over the last 6 months, 504 institutions increased and 428 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
17
Net (3m)
-$7.3M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +55.3%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 500 | $100.46 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 5,703 | $103.08 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 4,897 | $104.11 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 3,200 | $107.77 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 9,400 | $104.87 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 9,000 | $102.55 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 7,500 | $103.48 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 7,200 | $106.36 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 900 | $98.96 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 9,600 | $107.22 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Option | 20,000 | $18.41 |
| Aug 19, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 2,100 | $101.77 |
| Aug 11, 2026 | Connaughton Bernadettedirector | Sell | 1,626 | $102.80 |
| Jul 9, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 1,035 | $80.19 |
| Jul 9, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Option | 1,923 | $12.07 |
| Jul 9, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 888 | $79.28 |
| Jul 2, 2026 | Snellgrove Darrenofficer: SVP, Chief Financial Officer | Grant | 41,554 | — |
| Jul 2, 2026 | RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERY | Option | 10,000 | — |
| Jul 2, 2026 | RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERY | Tax | 5,408 | $78.27 |
| Jul 2, 2026 | Snellgrove Darrenofficer: SVP, Chief Financial Officer | Grant | 127,432 | $77.01 |
| Jul 2, 2026 | RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERY | Grant | 16,232 | — |
| Jul 2, 2026 | Connaughton Bernadettedirector | Sell | 625 | $77.21 |
| Jul 2, 2026 | Connaughton Bernadettedirector | Sell | 1,000 | $76.39 |
| Jul 2, 2026 | RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERY | Grant | 39,823 | $77.01 |
| Jun 30, 2026 | Krishnan Maheshdirector | Sell | 7,304 | $75.00 |
| Jun 30, 2026 | Krishnan Maheshdirector | Option | 7,304 | $38.46 |
| Jun 15, 2026 | Snyder Mark Howardofficer: SVP, CHIEF LEGAL OFFICER | Tax | 2,715 | $69.50 |
| Jun 15, 2026 | Snyder Mark Howardofficer: SVP, CHIEF LEGAL OFFICER | Option | 5,034 | — |
| Jun 3, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 6,100 | $69.69 |
| Jun 3, 2026 | Torley Helendirector, officer: PRESIDENT AND CEO | Sell | 2,000 | $68.74 |
Source: HALO SEC Form 4 filings, latest Aug 19, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their HALO positions over the last 6 months (SEC Form 13F).
Increased
504
New positions
207
Reduced
428
Sold out
70
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 13.3M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 13.3M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 5.4M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 5.3M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.3M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 5.2M | May 8, 2026 |
| STATE STREET CORP | Increased | 5.2M | Aug 7, 2026 |
| STATE STREET CORP | Reduced | 4.9M | May 15, 2026 |
| INVESCO LTD. | Increased | 4.0M | May 12, 2026 |
| Invesco Ltd. | Reduced | 3.2M | Aug 14, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 2.9M | May 18, 2026 |
| MORGAN STANLEY | Increased | 2.8M | Aug 13, 2026 |
| Boston Partners | Increased | 2.8M | Aug 4, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.7M | Aug 14, 2026 |
| BOSTON PARTNERS | Increased | 2.7M | May 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.