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)
DateInsiderTypeSharesPrice
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell500$100.46
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell5,703$103.08
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell4,897$104.11
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell3,200$107.77
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell9,400$104.87
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell9,000$102.55
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell7,500$103.48
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell7,200$106.36
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell900$98.96
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell9,600$107.22
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOOption20,000$18.41
Aug 19, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell2,100$101.77
Aug 11, 2026Connaughton BernadettedirectorSell1,626$102.80
Jul 9, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell1,035$80.19
Jul 9, 2026Torley Helendirector, officer: PRESIDENT AND CEOOption1,923$12.07
Jul 9, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell888$79.28
Jul 2, 2026Snellgrove Darrenofficer: SVP, Chief Financial OfficerGrant41,554
Jul 2, 2026RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERYOption10,000
Jul 2, 2026RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERYTax5,408$78.27
Jul 2, 2026Snellgrove Darrenofficer: SVP, Chief Financial OfficerGrant127,432$77.01
Jul 2, 2026RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERYGrant16,232
Jul 2, 2026Connaughton BernadettedirectorSell625$77.21
Jul 2, 2026Connaughton BernadettedirectorSell1,000$76.39
Jul 2, 2026RAMSAY DAVID Aofficer: EVP, PRESIDENT, DRUG DELIVERYGrant39,823$77.01
Jun 30, 2026Krishnan MaheshdirectorSell7,304$75.00
Jun 30, 2026Krishnan MaheshdirectorOption7,304$38.46
Jun 15, 2026Snyder Mark Howardofficer: SVP, CHIEF LEGAL OFFICERTax2,715$69.50
Jun 15, 2026Snyder Mark Howardofficer: SVP, CHIEF LEGAL OFFICEROption5,034
Jun 3, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell6,100$69.69
Jun 3, 2026Torley Helendirector, officer: PRESIDENT AND CEOSell2,000$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
InstitutionActionSharesFiled
BlackRock, Inc.Increased13.3MAug 7, 2026
BLACKROCK, INC.Increased13.3MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased5.4MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased5.3MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5.3MMay 15, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position5.2MMay 8, 2026
STATE STREET CORPIncreased5.2MAug 7, 2026
STATE STREET CORPReduced4.9MMay 15, 2026
INVESCO LTD.Increased4.0MMay 12, 2026
Invesco Ltd.Reduced3.2MAug 14, 2026
BANK OF AMERICA CORP /DE/Increased2.9MMay 18, 2026
MORGAN STANLEYIncreased2.8MAug 13, 2026
Boston PartnersIncreased2.8MAug 4, 2026
BANK OF AMERICA CORP /DE/Reduced2.7MAug 14, 2026
BOSTON PARTNERSIncreased2.7MMay 11, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.