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IONS

Ionis Pharmaceuticals, Inc.

NASDAQ · Healthcare · Biotechnology · US

$58.09
−0.07%
Ask drillr
2
Insider buys (3m)
16
Insider sells (3m)
-$18.0M
Net value (3m)
-21.0%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Jul 31, 2026Hayden Michael R · directorPurchase5,000$52
Jul 31, 2026Hayden Michael R · directorPurchase15,000$53
Jul 17, 2026Reikes Peter N · directorA-Award3,399$0.00
Jul 17, 2026HANTSON LUDWIG · directorA-Award3,399$0.00
Jul 17, 2026HERMAN JOAN E · directorM-Exempt5,220$0.00
Jul 17, 2026BERTHELSEN SPENCER R · directorM-Exempt5,220$0.00
Jul 9, 2026BENNETT C FRANK · officer: EVP, Chief Scientific OfficerSale15,000$85
Jul 9, 2026Diaz Allene M. · directorSale10,111$85
Jul 9, 2026BENNETT C FRANK · officer: EVP, Chief Scientific OfficerSale5,536$84
Jul 9, 2026Kordasiewicz Holly B. · officer: EVP, Chief Development OfficerSale362$84
Jul 9, 2026Diaz Allene M. · directorM-Exempt10,111$47
Jul 6, 2026HERMAN JOAN E · directorA-Award5,369$79
Jul 6, 2026Diaz Allene M. · directorA-Award5,369$79
Jul 6, 2026LOSCALZO JOSEPH · directorA-Award5,369$79
Jul 6, 2026KLEIN JOSEPH III · directorA-Award2,301$0.00
Jul 6, 2026BERTHELSEN SPENCER R · directorA-Award2,301$0.00
Jul 6, 2026Hayden Michael R · directorA-Award2,301$0.00
Jul 6, 2026LOSCALZO JOSEPH · directorA-Award2,301$0.00
Jul 6, 2026YANG MICHAEL J. · directorA-Award5,369$79
Jul 6, 2026YANG MICHAEL J. · directorA-Award2,301$0.00
Jul 6, 2026Hayden Michael R · directorA-Award5,369$79
Jul 6, 2026BERTHELSEN SPENCER R · directorA-Award5,369$79
Jul 6, 2026KLEIN JOSEPH III · directorM-Exempt11,518$40
Jul 6, 2026KLEIN JOSEPH III · directorSale11,419$79
Jul 6, 2026KLEIN JOSEPH III · directorSale99$79
Jul 6, 2026HERMAN JOAN E · directorA-Award2,301$0.00
Jul 6, 2026KLEIN JOSEPH III · directorA-Award5,369$79
Jul 6, 2026Diaz Allene M. · directorA-Award2,301$0.00
Jun 30, 2026Schneider Eugene · officer: EVP, Chf Clinical Develop OfcrSale26,000$81
Jun 30, 2026Baroldi Joseph · officer: EVP, Chief Business OfficerM-Exempt3,866$57
Institutional positioning

13F filings over the trailing two quarters

New 141Increased 391Reduced 319Sold out 44
FilerActionSharesFiled
FMR LLCIncreased24,631,956Aug 13, 2026
FMR LLCIncreased24,556,637May 15, 2026
Capital World InvestorsIncreased21,669,226Aug 12, 2026
CAPITAL WORLD INVESTORSIncreased21,186,369May 13, 2026
BlackRock, Inc.Increased10,704,660Aug 7, 2026
BLACKROCK, INC.Reduced10,442,476May 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased7,859,529Aug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position7,808,902May 8, 2026
WELLINGTON MANAGEMENT GROUP LLPIncreased7,651,415Aug 14, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased7,211,497Aug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position7,118,330May 15, 2026
WELLINGTON MANAGEMENT GROUP LLPIncreased6,391,816May 15, 2026
TWO SIGMA INVESTMENTS, LPIncreased6,252,342Aug 14, 2026
ROYAL BANK OF CANADAIncreased6,182,479Aug 14, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.Reduced6,159,027May 15, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jul 31, 2026