NASDAQ:IONS

Ionis Pharmaceuticals Stock Insider Trading

Healthcare > Biotechnology

Buy IONS

*Your capital is at risk

$54.01

+0.620 (+1.16%)

At Close: Jul 22, 2026

Ionis Pharmaceuticals Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -74.76. In total, the insiders bought 757.69K and sold 364.31K IONS 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 (Last 100 transactions)	-74.76
● Buy	757.69K shares
● Sell	364.31K shares
73% Buy Activity Moderate Negative Correlation
Sell Signal High Confidence Jan 16, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -74.76. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jul 15, 2026 Buy	Restricted Stock Unit A-Award	Reikes Peter N Director	Director	3 399 Value: $186.0K
Jul 15, 2026 Buy	Restricted Stock Unit A-Award	Hantson Ludwig Director	Director	3 399 Value: $186.0K
Jul 15, 2026 Buy	Common Stock M-Exempt	Herman Joan E Director	Director	5 220 Value: $285.7K
Jul 15, 2026 Buy	Restricted Stock Unit M-Exempt	Herman Joan E Director	Director	5 220 Value: $285.7K
Jul 15, 2026 Buy	Common Stock M-Exempt	Berthelsen Spencer R Director	Director	5 220 Value: $285.7K
Jul 15, 2026 Buy	Restricted Stock Unit M-Exempt	Berthelsen Spencer R Director	Director	5 220 Value: $285.7K
Jul 07, 2026 Sell	Common Stock S-Sale	Diaz Allene M. Director	Director	10 111 Value: $863.6K
Jul 07, 2026 Buy	Common Stock J-Other	Bennett C Frank EVP, Chief Scientific Officer	Officer	15 000 Value: $1.29M
Jul 07, 2026 Sell	Restricted Stock Unit J-Other	Bennett C Frank EVP, Chief Scientific Officer	Officer	15 000 Value: $0
Jul 07, 2026 Sell	Common Stock S-Sale	Bennett C Frank EVP, Chief Scientific Officer	Officer	15 000 Value: $1.28M
Jul 07, 2026 Buy	Common Stock M-Exempt	Diaz Allene M. Director	Director	10 111 Value: $476.3K
Jul 07, 2026 Buy	Non-Qualified Stock Option (right to buy) M-Exempt	Diaz Allene M. Director	Director	10 111 Value: $476.3K
Jul 07, 2026 Sell	Common Stock S-Sale	Kordasiewicz Holly B. EVP, Chief Development Officer	Officer	362 Value: $30.5K
Jul 07, 2026 Sell	Common Stock S-Sale	Bennett C Frank EVP, Chief Scientific Officer	Officer	5 536 Value: $462.7K
Jul 01, 2026 Buy	Restricted Stock Unit A-Award	Loscalzo Joseph Director	Director	2 301 Value: $182.2K
Jul 01, 2026 Buy	Non-Qualified Stock Option (right to buy) A-Award	Loscalzo Joseph Director	Director	5 369 Value: $425.2K
Jul 01, 2026 Buy	Restricted Stock Unit A-Award	Herman Joan E Director	Director	2 301 Value: $182.2K
Jul 01, 2026 Buy	Non-Qualified Stock Option (right to buy) A-Award	Berthelsen Spencer R Director	Director	5 369 Value: $425.2K
Jul 01, 2026 Buy	Restricted Stock Unit A-Award	Berthelsen Spencer R Director	Director	2 301 Value: $182.2K
Jul 01, 2026 Buy	Non-Qualified Stock Option (right to buy) A-Award	Herman Joan E Director	Director	5 369 Value: $425.2K
Jul 01, 2026 Buy	Common Stock M-Exempt	Klein Joseph Iii Director	Director	11 518 Value: $460.0K
Jul 01, 2026 Sell	Common Stock S-Sale	Klein Joseph Iii Director	Director	99 Value: $8K
Jul 01, 2026 Buy	Restricted Stock Unit A-Award	Klein Joseph Iii Director	Director	2 301 Value: $182.2K
Jul 01, 2026 Sell	Common Stock S-Sale	Klein Joseph Iii Director	Director	11 419 Value: $902.6K
Jul 01, 2026 Buy	Non-Qualified Stock Option (right to buy) A-Award	Klein Joseph Iii Director	Director	5 369 Value: $425.2K

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

ABOUT IONIS PHARMACEUTICALS

Ionis Pharmaceuticals, Inc. discovers and develops RNA-targeted therapeutics in the United States. The company offers SPINRAZA for spinal muscular atrophy (SMA) in pediatric and adult patients; TEGSEDI, an injection for the treatment of polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults; and WAYLIVRA, a treatment for familial chylomicronemia syndrome and familial partial lipodystrophy. It also develops medicines for various...

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