Ionis Pharmaceuticals, Inc.
corporate_fare Company Profile
Ionis Pharmaceuticals, Inc. (NASDAQ:IONS) is a publicly traded company in the Life Sciences sector. Wiseek has independently scored 33 items for IONS at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-09-23, rated 9/10. Across its 20 most recent items scored 7 or higher, the top rating is 9/10, with 18 rated 8 or above. Recent SEC coverage for IONS spans 8-K, 10-Q.
Recent high-impact activity:
- Ionis' Sefaxersen Hits Primary Endpoint in Phase 3 IgAN Trial
- Ionis/Otsuka ALS Drug Hits Primary Goal in Late-Stage Trial
- Ionis Partner Novartis' Pelacarsen Fails Phase 3 Cardiovascular Outcomes Trial
- FDA Approves ZANVASTRO for Alexander Disease; Ionis Secures Priority Review Voucher
- FDA Approves Ionis' Zilganersen for Rare Alexander Disease
Financial Snapshot
Short Interest & Short Volume
5.20 days to coverFINRA reported short interest of 20,890,252 shares in IONS as of the September 15, 2026 settlement, a 0.2% decrease from the prior period — about 5.2 days to cover at its recent average daily volume. On October 2, 2026, 33.2% of IONS volume reported to FINRA trade-reporting facilities was marked short.
Daily short sale volume covers trades reported to FINRA trade-reporting facilities and is not the same as short interest (bi-monthly reported positions). Source: FINRA — FINRA is the owner and source of this short interest and short sale volume data; it may not be redistributed.
Dilution Risk
Low riskFiling-implied dilution signals for IONS, detected from its recent SEC filings · based on capital-structure filings through 2026-04-23.
Proposed Equity Incentive Plan Expansion · Employee Stock Purchase Plan Increase
⚠ A more recent filing has been published for this ticker since this signal was computed; it may not yet be reflected — see the filings below.
A filing-implied signal, not a realized share count. How Wiseek tracks dilution →