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Buy HALO
Halozyme Therapeutics Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -68.58. In total, the insiders bought 721.01K and sold 251.08K HALO shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-68.58 |
| ● Buy | 721.01K shares |
| ● Sell | 251.08K shares |
|
54% Buy Activity
Weak Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jul 08, 2026 Buy |
Torley Helen President And CEO |
1 923 Value: $23.2K |
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|
Jul 08, 2026 Sell |
Torley Helen President And CEO |
888 Value: $70.4K |
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Jul 08, 2026 Sell |
Torley Helen President And CEO |
1 035 Value: $83.0K |
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Jul 08, 2026 Buy |
Torley Helen President And CEO |
1 923 Value: $23.2K |
||
|
Jul 01, 2026 Sell |
Connaughton Bernadette Director |
625 Value: $48.3K |
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|
Jul 01, 2026 Buy |
Ramsay David A EVP, President, Drug Delivery |
39 823 Value: $3.07M |
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Jul 01, 2026 Sell |
Connaughton Bernadette Director |
1 000 Value: $76.4K |
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|
Jul 01, 2026 Buy |
Snellgrove Darren SVP, Chief Financial Officer |
41 554 Value: $3.20M |
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|
Jul 01, 2026 Buy |
Snellgrove Darren SVP, Chief Financial Officer |
127 432 Value: $9.81M |
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Jul 01, 2026 Buy |
Ramsay David A EVP, President, Drug Delivery |
16 232 Value: $1.25M |
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|
Jun 30, 2026 Buy |
Ramsay David A EVP, President, Drug Delivery |
10 000 Value: $782.7K |
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Jun 30, 2026 Sell |
Ramsay David A EVP, President, Drug Delivery |
5 408 Value: $423.3K |
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Jun 30, 2026 Buy |
Ramsay David A EVP, President, Drug Delivery |
10 000 Value: $782.7K |
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Jun 29, 2026 Buy |
Krishnan Mahesh Director |
7 304 Value: $280.9K |
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|
Jun 29, 2026 Sell |
Krishnan Mahesh Director |
7 304 Value: $547.8K |
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Jun 29, 2026 Buy |
Krishnan Mahesh Director |
7 304 Value: $280.9K |
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|
Jun 12, 2026 Buy |
Snyder Mark Howard SVP, Chief Legal Officer |
5 034 Value: $349.9K |
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Jun 12, 2026 Sell |
Snyder Mark Howard SVP, Chief Legal Officer |
2 715 Value: $188.7K |
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Jun 12, 2026 Buy |
Snyder Mark Howard SVP, Chief Legal Officer |
5 034 Value: $349.9K |
||
|
Jun 08, 2026 Buy |
Snellgrove Darren Officer |
0 Value: $0 |
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|
Jun 03, 2026 Buy |
Torley Helen President And CEO |
10 000 Value: $120.7K |
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|
Jun 03, 2026 Sell |
Torley Helen President And CEO |
2 000 Value: $137.5K |
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Jun 03, 2026 Sell |
Torley Helen President And CEO |
6 100 Value: $425.1K |
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Jun 03, 2026 Buy |
Torley Helen President And CEO |
10 000 Value: $120.7K |
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|
Jun 03, 2026 Sell |
Torley Helen President And CEO |
1 500 Value: $101.5K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
