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Catalyst Calendar

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Wed, Sep 23, 2026

1 updates

Tue, Sep 22, 2026

1 updates
IONS
8:00 AM

Ionis announces positive topline results from Phase 3 FUSION study of ulefnersen marking significant milestone in advancing first potential disease modifying treatment for FUS-ALS

– Ulefnersen demonstrated a statistically significant improvement on the primary endpoint assessing functional impairment and survival in people living with FUS-ALS, supporting the potential to modify disease progression – – Results will be discussed with the U.S.

Trial Results • Phase 3Topline results Tue, Sep 22, 2026ionis.com

Fri, Sep 4, 2026

1 updates
IONS
4:41 PM

Ionis partner Novartis announces Lp(a)HORIZON Phase 3 topline results for pelacarsen in patients with elevated Lp(a) and established cardiovascular disease (CVD)

CARLSBAD, Calif. --(BUSINESS WIRE)--Sep. 4, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) partner Novartis today announced that the pelacarsen Phase 3 Lp(a)HORIZON study, a pioneering cardiovascular outcomes trial, did not meet its primary endpoint of reducing the risk of cardiovascular events,

Trial Results • Phase 3Phase 3 topline results Fri, Sep 4, 2026ionis.com

Thu, Sep 3, 2026

2 updates
IONS
7:05 AM

Ionis to present at upcoming investor conferences

CARLSBAD, Calif. --(BUSINESS WIRE)--Sep. 3, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that management will participate in fireside chats at the following investor conferences: 21 st Annual Wells Fargo Healthcare Conference on Thursday, September 10, 2026 Morgan Stanley 24 th

ionis.com

Mon, Aug 24, 2026

1 updates

Thu, Aug 20, 2026

1 updates
IONS
7:00 AM

Ionis to present new data strengthening leadership in the management of severe hypertriglyceridemia (sHTG) at the European Society of Cardiology Congress 2026

CARLSBAD, Calif. --(BUSINESS WIRE)--Aug. 20, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that new data in the management of severe hypertriglyceridemia (sHTG) will be presented at the European Society of Cardiology (ESC) Congress 2026, taking place August 28 – 31 in Munich.

Presentation / Abstract • Phase 3ESC Congress oral presentation Fri, Aug 28, 2026, 8:33 AM CESTionis.com

Wed, Jul 29, 2026

2 updates
IONS
7:05 AM

Ionis announces Dr. Frank Bennett, chief scientific officer, to retire

CARLSBAD, Calif. --(BUSINESS WIRE)--Jul. 29, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) announced today that Frank Bennett, Ph.D., executive vice president and chief scientific officer, will retire effective February 2027. “As a founding scientist, Frank has been instrumental in shaping

ionis.com

Wed, Jul 15, 2026

1 updates
IONS
7:05 AM

Ionis to hold second quarter 2026 financial results webcast

Webcast scheduled for Wednesday, July 29 at 8:30 a.m. Eastern Time CARLSBAD, Calif. --(BUSINESS WIRE)--Jul. 15, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) announced today that it will host a live webcast on Wednesday, July 29 at 8:30 a.m. Eastern Time to discuss its second quarter 2026

ionis.com

Tue, Jul 14, 2026

1 updates
IONS
9:16 AM

Ionis Partner Biogen Presents Phase 2 CELIA Data at AAIC Demonstrating Meaningful Clinical Outcomes and Robust Tau Reduction with Diranersen in Early Alzheimer’s Disease

- Clinical outcomes: Diranersen demonstrated efficacy across all studied doses at 18 months, with consistent results across multiple prespecified clinical endpoints; the 60 mg dose showed the strongest response with slowing of clinical decline on the cognitive endpoints—42% on ADAS-Cog13 and 50% on

Presentation / Abstract • Phase 2AAIC presentation Tue, Jul 14, 2026ionis.com

Mon, Jul 13, 2026

1 updates
IONS
7:00 AM

Ionis doses first participant in Phase 1-2 ASCEND study of ION337 in Dravet syndrome

CARLSBAD, Calif. --(BUSINESS WIRE)--Jul. 13, 2026-- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that the first participant has been dosed in the Phase 1-2 ASCEND study of ION337, an investigational RNA-targeted medicine for people living with Dravet syndrome, a rare, severe and

Trial Start • Phase 1/2Trial initiation Mon, Jul 13, 2026ionis.com