Company
Headquarters: Carlsbad, CA, United States
Founded: 1989
Employees: 660
CEO: Dr. Brett P. Monia Ph.D.
$12.90 Billion
USD as of Jan. 1, 2026
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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 is involved in developing neurology products that include Tominersen for Huntington's diseases; Tofersen for amyotrophic lateral sclerosis (ALS); IONIS-MAPTRx for Alzheimer's diseases; IONIS-C9Rx for genetic form of ALS; ION859 for Parkinson's disease; ION464 for multiple system atrophy and Parkinson's disease; ION541 for amyotrophic lateral sclerosis; and IONIS-DNM2-2.5Rx for centronuclear myopathy. The company is also developing products for cardiometabolic disease, such as IONIS-TTR-LRx for transthyretin amyloidosis and IONIS-GHR-LRx for acromegaly; IONIS-APOCIII-LRx for familial chylomicronemia syndrome and TG- driven diseases; IONIS-APOCIII-LRx for treatment resistant hypertension; Pelacarsen for Lp(a)cardiovascular disease risk reduction; Vupanorsen for sHTG/CVDRR; IONIS-FXI-LRx for clotting disorders; ION449 for cardiovascular diseases; and IONIS-GCGRRx for diabetics. In addition, it develops IONIS-ENAC-2.5Rx for cystic fibrosis and chronic obstructive pulmonary disease; IONIS-PKK-LRx for hereditary angioedema; Danvatirsen for cancer; IONIS-TMPRSS6-LRx for beta-thalassemia and iron toxicity; IONIS-HBVRx for hepatitis B virus; IONIS-AR-2.5Rx for prostate cancer; IONIS-FB-LRx for age-related macular degeneration and IgA nephropathy; and ION357 for retinitis pigmentosa. It has a collaboration agreement with AstraZeneca; GlaxoSmithKline plc; Janssen Biotech, Inc.; Bayer AG; Novartis AG; Pfizer, Inc.; Biogen Inc.; Flamingo Therapeutics, Inc.; and Roche. Ionis Pharmaceuticals, Inc. was founded in 1989 and is based in Carlsbad, California.
| Last Financial Reports Date | Sept. 30, 2025 |
| Revenue TTM | $967.0 M |
| EBITDA | $-266,799,008 |
| Gross Profit TTM | $73.7 M |
| Profit Margin | -26.51% |
| Operating Margin | -102.21% |
| Quarterly Revenue Growth | 17.10% |
Ionis Pharmaceuticals, Inc. has the following listings and related stock indices.
Stock: NASDAQ: IONS wb_incandescent
Stock: FSX: ISI wb_incandescent
nusinersen, inotersen, volanesorsen, plazomicin, mipomersen
Founder(s): Stanley T. Crooke
Brett P. Monia, CEO Elizabeth L. Hougen, CFO Joseph Loscalzo, Chairman of the Board