EntityWire

EntityWire / EIN 33-0336973

Employer with a benefit plan

IONIS PHARMACEUTICALS, INC.

EIN 33-0336973. What DOL Form 5500 filings (EFAST2) and SEC EDGAR company filings say about this entity, with the source and date on every fact. Latest record 2026-09-04.

Employer with a benefit plan ยท SEC filer

IONIS PHARMACEUTICALS, INC.

Also filed as ISIS PHARMACEUTICALS INC

2855 GAZELLE COURT, CARLSBAD, CA 92010

EIN

33-0336973

SEC CIK

0000874015

SEC · 2026-09-04

Industry (SIC)

Pharmaceutical Preparations (2834)

SEC · 2026-09-04

State of incorporation

CA

SEC · 2026-09-04

Ticker

IONS

SEC · 2026-09-04

Latest SEC filing

8-K 2026-09-04

SEC · 2026-09-04

Benefit plan 1, 2024 filing

IONIS PHARMACEUTICALS 401(K) PLAN

DOL · 2025-08-25

Participants (start of year)

1,317

DOL · 2025-08-25

Plan features

code 2G2J2K2R2S2T3D3F2F3H

DOL · 2025-08-25

Plan type

Single-employer plan

DOL · 2025-08-25

Business code (NAICS)

541700

DOL · 2025-08-25

Benefit plan 501, 2024 filing

IONIS PHARMACEUTICALS, INC. HEALTH AND WELFARE PLAN

DOL · 2025-06-24

Participants (start of year)

887

DOL · 2025-06-24

Plan features

code 4A4B4D4E4H4H4L4Q

DOL · 2025-06-24

Plan type

Single-employer plan

DOL · 2025-06-24

From DOL Form 5500 filings (EFAST2) · SEC EDGAR company filings. Latest record 2026-09-04.

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