IONS

IONIS PHARMACEUTICALS INC

Pharmaceutical PreparationsNasdaqLarge accelerated filer

Total Trades

283

Buys

2

Sells

161

Largest Trade

N/A

Insiders

21

Institutional Funds

410

Inst. Value

$1M+

Activist Filings

23

Insider Trades

InsiderTitleTypeValueSharesPriceDate
BENNETT C FRANKEVPEXERCISEN/A18KJan 18, 2025
Baroldi JosephEVPSELL$100K–$500K4K$32.70Jan 18, 2025
Baroldi JosephEVPEXERCISEN/A11KJan 18, 2025
Hayden Michael RDirectorBUY$100K–$500K5K$36.22Dec 26, 2024
Swayze EricEVP ResearchSELL$15K–$50K1K$37.92Nov 14, 2024
Monia Brett PCEOSELL$100K–$500K7K$38.05Nov 14, 2024
LOSCALZO JOSEPHDirectorSELL$500K+14K$37.86Nov 14, 2024
Swayze EricEVP ResearchEXERCISEN/A125Oct 17, 2024
Swayze EricEVP ResearchSELL$1K–$15K53$38.31Oct 17, 2024
Geary Richard SEVPSELL$15K–$50K651$49.40Sep 3, 2024
BERTHELSEN SPENCER RDirectorSELL$500K+16K$40.29Jun 20, 2024
BERTHELSEN SPENCER RDirectorEXERCISE$500K+16K$35.53Jun 20, 2024
Baroldi JosephEVPSELL$100K–$500K4K$41.60Apr 17, 2024
Baroldi JosephEVPEXERCISEN/A11KApr 17, 2024
Birchler BrianEVPEXERCISEN/A2KApr 17, 2024
Birchler BrianEVPSELL$15K–$50K905$41.66Apr 17, 2024
Monia Brett PCEOSELL$15K–$50K387$44.49Feb 17, 2024
Swayze EricEVP ResearchSELL$500K+13K$51.63Feb 3, 2024
Swayze EricEVP ResearchGRANTN/A4KFeb 3, 2024
Schneider EugeneEVPGRANTN/A4KFeb 3, 2024
Schneider EugeneEVPSELL$100K–$500K2K$49.59Feb 3, 2024
O'NEIL PATRICK R.EVP CLO & General …GRANTN/A4KFeb 3, 2024
O'NEIL PATRICK R.EVP CLO & General …SELL$50K–$100K2K$49.67Feb 3, 2024
Monia Brett PCEOGRANTN/A46KFeb 3, 2024
Monia Brett PCEOSELL$1M+24K$49.37Feb 3, 2024
HOUGEN ELIZABETH LEVP, Finance & CFOGRANTN/A4KFeb 3, 2024
HOUGEN ELIZABETH LEVP, Finance & CFOSELL$100K–$500K2K$49.54Feb 3, 2024
Geary Richard SEVPSELL$50K–$100K2K$50.04Feb 3, 2024
Geary Richard SEVPGRANTN/A4KFeb 3, 2024
Cadoret-Manier OnaizaEVPGRANTN/A4KFeb 3, 2024
Cadoret-Manier OnaizaEVPSELL$100K–$500K2K$49.60Feb 3, 2024
BENNETT C FRANKEVPGRANTN/A4KFeb 3, 2024
BENNETT C FRANKEVPSELL$50K–$100K2K$49.52Feb 3, 2024
Monia Brett PCEOSELL$100K–$500K2K$51.75Jan 29, 2024
O'NEIL PATRICK R.EVP CLO & General …SELL$100K–$500K6K$51.75Jan 29, 2024
Cadoret-Manier OnaizaEVPSELL$100K–$500K6K$50.42Jan 18, 2024
Cadoret-Manier OnaizaEVPEXERCISEN/A15KJan 18, 2024
O'NEIL PATRICK R.EVP CLO & General …SELL$100K–$500K8K$50.42Jan 18, 2024
O'NEIL PATRICK R.EVP CLO & General …EXERCISEN/A21KJan 18, 2024
Birchler BrianEVPEXERCISEN/A12KJan 18, 2024
Birchler BrianEVPSELL$100K–$500K4K$50.42Jan 18, 2024
Swayze EricEVP ResearchSELL$100K–$500K6K$50.42Jan 18, 2024
Swayze EricEVP ResearchEXERCISEN/A17KJan 18, 2024
Schneider EugeneEVPSELL$100K–$500K5K$50.42Jan 18, 2024
Schneider EugeneEVPEXERCISEN/A15KJan 18, 2024
Monia Brett PCEOEXERCISEN/A68KJan 18, 2024
Monia Brett PCEOSELL$1M+32K$50.42Jan 18, 2024
HOUGEN ELIZABETH LEVP, Finance & CFOEXERCISEN/A22KJan 18, 2024
HOUGEN ELIZABETH LEVP, Finance & CFOSELL$100K–$500K9K$50.42Jan 18, 2024
Geary Richard SEVPEXERCISEN/A20KJan 18, 2024
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Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Capital World Investors

SC 13G/A · Jan 8, 2026

11.1%

18.0M shares

8.3%

13.2M shares

Wellington Management Group LLP

SC 13G/A · Aug 12, 2025

4.3%

6.9M shares

BlackRock, Inc.

SC 13G/A · Apr 17, 2025

5.7%

9.1M shares

Capital World Investors

SC 13G · Feb 13, 2025

7.3%

11.5M shares

10.0%

15.9M shares

The Vanguard Group

SC 13G/A · Jan 8, 2025

10.4%

16.5M shares

BB Biotech AG

SC 13G/A · Nov 15, 2024

5.0%

7 shares

9.0%

14.2M shares

Wellington Management Group LLP

SC 13G · Nov 8, 2024

5.8%

9.1M shares

9.2%

13.2M shares

The Vanguard Group - 23-1945930

SC 13G/A · Feb 13, 2024

9.9%

14.2M shares

BB Biotech AG

SC 13G/A · Feb 13, 2024

6.0%

8.6M shares

BlackRock, Inc.

SC 13G/A · Jan 26, 2024

6.3%

9.1M shares

The Vanguard Group - 23-1945930

SC 13G/A · Jun 9, 2023

10.1%

14.4M shares

BB Biotech AG

SC 13G/A · Feb 14, 2023

6.8%

9.6M shares

8.2%

11.7M shares

BlackRock, Inc.

SC 13G/A · Jan 31, 2023

6.5%

9.2M shares

3.3%

4.8M shares

10.1%

14.4M shares

8.8%

12.5M shares

BB Biotech AG

SC 13G/A · Feb 11, 2022

7.2%

10.2M shares

BlackRock, Inc.

SC 13G · Feb 1, 2022

6.0%

8.5M shares

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