IONIS USA LIMITED
Company details
- Registered name
- IONIS USA LIMITED
- Company number
- 05508379
- Registered office
- TOWER 42, LEVEL 30, INTERNATIONAL FINANCE CENTRE, 25 OLD BROAD STREET, LONDON, EC2N 1HQ · 214 other companies at this postcode
- Company type
- Private Limited Company
- Incorporated on
- 14 July 2005
- Status
- Active
- Age
- 21 years
- Previous names
- ISIS USA LIMITED (to 31 Jan 2016)
- Nature of business (SIC)
- 72110 — Research and experimental development on biotechnology
- Accounts — next due
- 30 Sept 2026
- Accounts — last made up to
- 31 Dec 2024
- Confirmation statement — next due
- 28 Jul 2026
- Confirmation statement — last
- 14 Jul 2025
What the register says
Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.
- The confirmation statement was due on 28 July 2026 (47 days overdue).
- The last accounts filed were dormant accounts — the company reported no trading.
Companies House register snapshot, read 02/09/2026.
People with significant control
Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors
Corporate structure
Who controls this company, and who they control in turn
Connections
Change history
Reconstructed from the dated records Companies House publishes
| Date | Change | Was | Now |
|---|---|---|---|
| 06/04/2016 | Person with significant control added | — | Ionis Pharmaceuticals, Inc. |
| 31/01/2016 | Registered name changed | ISIS USA LIMITED | IONIS USA LIMITED |
Financial highlights
Parsed from the filed statutory accounts (£ thousands, except employees)
| Metric | FY2024 | FY2023 |
|---|---|---|
| Net assets | 0 | 0 |
Documents for IONIS USA LIMITED
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The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.
Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.
Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.
Data protection register
No entry found on the ICO register of fee payers under this name.
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About IONIS USA LIMITED (05508379)
IONIS USA LIMITED is a private limited company incorporated on 14 July 2005 and registered in the United Kingdom under company number 05508379. Its registered office is at TOWER 42, LEVEL 30, INTERNATIONAL FINANCE CENTRE, 25 OLD BROAD STREET, LONDON, EC2N 1HQ. The recorded nature of business is research and experimental development on biotechnology (SIC 72110). The company is currently active , with statutory accounts last made up to 31 December 2024. , and the person with significant control is Ionis Pharmaceuticals, Inc.. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.
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