Ionis Pharmaceuticals Inc SEC filings IONS

Ionis Pharmaceuticals Inc has 1,005 filings in SEC EDGAR's recent list, going back to Jul 6, 2020. Its latest annual report, Form ARS, was filed on Apr 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 29, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 23, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.

Form Description Filed Period
S-8 Employee stock plan registration Jul 31, 2026 —
S-8 Employee stock plan registration Jul 30, 2025 —
424B5 Prospectus supplement Sep 10, 2024 —
424B5 Prospectus supplement Sep 9, 2024 —
S-8 Employee stock plan registration Aug 5, 2024 —
S-3ASR Automatic shelf registration Nov 24, 2023 —
S-8 Employee stock plan registration Aug 11, 2023 —
S-8 Employee stock plan registration Aug 5, 2021 —
S-8 Employee stock plan registration Dec 31, 2020 —
S-8 Employee stock plan registration Aug 7, 2020 —
S-3ASR Automatic shelf registration Aug 7, 2020 —

Showing 11 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Pharmaceutical Preparations (SIC 2834)
Listed as
IONS (Nasdaq)
Fiscal year ends
December 31
Incorporated in
CA
Headquarters
Carlsbad, CA
SEC filer status
Large accelerated filer
SEC CIK
874015
Former names
ISIS PHARMACEUTICALS INC (until Dec 18, 2015)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.