HALO
Halozyme Therapeutics Inc
130.90$
-0.2%
vs. previous close
Closing price · As of: Oct 30, 2026
Ownership
Ownership Structure
Who owns Halozyme Therapeutics Inc (HALO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.8% of the shares are freely tradable; institutional investors hold 107.2%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
107.2%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
1.1%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
98.8%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
17.7%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
114Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.69 | 13,271,095 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.71 | 5,351,312 | +1.5 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.67 | 5,299,008 | +0.9 | 06/30/2026 |
| State Street Corp | 4.56 | 5,179,434 | +4.9 | 06/30/2026 |
| Amvescap Plc. | 2.80 | 3,177,997 | -20.8 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 2.50 | 2,832,594 | +10.5 | 06/30/2026 |
| Boston Partners Global Investors, Inc | 2.44 | 2,773,568 | +3.3 | 06/30/2026 |
| Bank of America Corp | 2.41 | 2,740,561 | -5.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.56 | 4,042,836 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 3,603,899 | -4.4 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Torley Helen | PRESIDENT AND CEO | 767,780 | 100,502,402 $ | Oct 8, 2026 | direct |
| Posard Matthew L. | Director | 53,609 | 7,017,418 $ | Oct 1, 2026 | direct |
| Connaughton Bernadette | Director | 40,418 | 5,290,716 $ | Aug 10, 2026 | direct |
| Daly James M | Director | 1,169 | 153,022 $ | Oct 1, 2026 | direct |
| Appelhans Dannielle | Director | 1,161 | 151,975 $ | Sep 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 8, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 200 | 110.51 | 22,102 |
| Oct 8, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 11,900 | 110.00 | 1,308,941 |
| Oct 8, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 3,090 | 108.91 | 336,526 |
| Oct 8, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 4,810 | 108.18 | 520,341 |
| Oct 8, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Oct 7, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 200 | 113.69 | 22,739 |
| Oct 7, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 900 | 112.78 | 101,502 |
| Oct 7, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 10,300 | 111.84 | 1,151,942 |
| Oct 7, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 8,600 | 111.03 | 954,867 |
| Oct 7, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Oct 6, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 1,780 | 110.81 | 197,245 |
| Oct 6, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 9,920 | 109.89 | 1,090,119 |
| Oct 6, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 6,000 | 109.33 | 656,004 |
| Oct 6, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 2,300 | 107.90 | 248,175 |
| Oct 6, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Oct 1, 2026 | Daly James M | Director | Other | 1,169 | 0.00 | – |
| Oct 1, 2026 | Posard Matthew L. | Director | Sell | 100 | 110.04 | 11,004 |
| Oct 1, 2026 | Posard Matthew L. | Director | Sell | 1,100 | 109.57 | 120,526 |
| Oct 1, 2026 | Posard Matthew L. | Director | Sell | 3,300 | 108.45 | 357,898 |
| Oct 1, 2026 | Posard Matthew L. | Director | Sell | 730 | 107.17 | 78,233 |
| Sep 16, 2026 | Posard Matthew L. | Director | Sell | 4,000 | 108.99 | 435,964 |
| Sep 16, 2026 | Posard Matthew L. | Director | Sell | 8,896 | 108.04 | 961,124 |
| Sep 16, 2026 | Posard Matthew L. | Director | Sell | 3,000 | 106.83 | 320,484 |
| Sep 16, 2026 | Posard Matthew L. | Director | Sell | 3,100 | 106.13 | 329,009 |
| Sep 11, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 4,508 | 107.55 | 484,826 |
| Sep 11, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 15,492 | 107.15 | 1,660,030 |
| Sep 11, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Sep 10, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 5,412 | 107.58 | 582,228 |
| Sep 10, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 14,588 | 107.01 | 1,561,091 |
| Sep 10, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Sep 9, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 100 | 108.67 | 10,867 |
| Sep 9, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 6,596 | 107.82 | 711,187 |
| Sep 9, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 13,304 | 107.22 | 1,426,481 |
| Sep 9, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Sep 1, 2026 | Appelhans Dannielle | Director | Other | 1,161 | 0.00 | – |
| Aug 19, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 3,200 | 107.77 | 344,848 |
| Aug 19, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 9,600 | 107.22 | 1,029,350 |
| Aug 19, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 7,200 | 106.36 | 765,778 |
| Aug 19, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Aug 18, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 9,400 | 104.87 | 985,816 |
| Aug 18, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 4,897 | 104.11 | 509,827 |
| Aug 18, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 5,703 | 103.08 | 587,882 |
| Aug 18, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 7,500 | 103.48 | 776,115 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 9,000 | 102.55 | 922,977 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 2,100 | 101.77 | 213,709 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 500 | 100.46 | 50,229 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Sell | 900 | 98.96 | 89,062 |
| Aug 17, 2026 | Torley Helen | PRESIDENT AND CEO | Other | 20,000 | 18.41 | 368,200 |
| Aug 10, 2026 | Connaughton Bernadette | Director | Sell | 1,626 | 102.80 | 167,153 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.