opendata.bot
Company number
15630565

KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC

Officer · BARRY, Douglas, Mr. and 14 others
Active
✓ Active company on the official register. Next accounts due 30 June 2027.

Company details

London, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC
Company number
15630565
Registered office
105 PICCADILLY, SECOND FLOOR, LONDON, W1J 7NJ, ENGLAND · 141 other companies at this postcode
Company type
Public Limited Company
Incorporated on
9 April 2024
Status
Active
Age
2 years
Nature of business (SIC)
21200 — Manufacture of pharmaceutical preparations
Accounts — next due
30 Jun 2027
Accounts — last made up to
31 Dec 2025
Confirmation statement — next due
22 Apr 2027
Confirmation statement — last
08 Apr 2026

Officers

11 active · 4 resigned

secretary
Appointed 18/09/2025
Active
director
Appointed 27/06/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 04/10/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 09/04/2024
Active
director
Appointed 27/06/2024
Active
director
Appointed 27/06/2024
Active

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Baker Bros. Advisors Lp
owns 25–50% of shares
Notified 28/06/2024
Kiniksa Pharmaceuticals, Ltd.
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 09/04/2024
Mr Felix James Baker
owns 25–50% of shares
Notified 27/06/2024
Sanjiv Patel
holds 25–50% of voting rights
Notified 28/06/2024

Corporate structure

Who controls this company, and who they control in turn

4 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr Felix James Baker
born 03/1969 · United States owns 25–50% of shares Notified 27/06/2024
Sanjiv Patel
born 07/1969 · United States holds 25–50% of votes Notified 28/06/2024
Baker Bros. Advisors Lp name only
owns 25–50% of shares Control ended 01/07/2025
Kiniksa Pharmaceuticals, Ltd. name only
owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Control ended 28/06/2024 Controls 2 companies

Serving officers

secretary Appointed 18/09/2025
director Appointed 27/06/2024
director Appointed 27/06/2024
director Appointed 04/10/2024
director Appointed 27/06/2024

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
18/09/2025 Secretary resigned ZEYLIKMAN, Madelyn
18/09/2025 Secretary appointed BARRY, Douglas, Mr.
01/07/2025 Person with significant control ceased Baker Bros. Advisors Lp
04/10/2024 Director appointed BOYD, Meta Cantey
28/06/2024 Person with significant control ceased Kiniksa Pharmaceuticals, Ltd.
28/06/2024 Person with significant control added Sanjiv Patel
28/06/2024 Person with significant control added Baker Bros. Advisors Lp
27/06/2024 Person with significant control added Mr Felix James Baker
27/06/2024 Director resigned RAGOSA, Mark
27/06/2024 Director resigned MOAT, Ross Michael
27/06/2024 Director resigned MEGNA, Michael
27/06/2024 Director appointed QUART, Barry Davd, Dr.
27/06/2024 Director appointed POPOVITS, Kimberly Johnston
27/06/2024 Director appointed MCCAIN, Tracey Lorene
27/06/2024 Director appointed MALLEY, Thomas Robert
27/06/2024 Director appointed LEVY, Richard Steven
27/06/2024 Director appointed COLE, Gordon Bradley
27/06/2024 Director appointed BIGGAR, Stephen Richard
27/06/2024 Director appointed BAKER, Felix James, Dr
09/04/2024 Person with significant control added Kiniksa Pharmaceuticals, Ltd.

Financial highlights

No figures could be read from the accounts filed on 21 Jun 2026. Companies House holds some filings only as a document image, which carries no tagged figures; the filing itself is on the register either way.

Documents for KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC

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Company extract£1.99

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Financial statements£3.99

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Filing history

Most recent filings

SH01 — capital-allotment-shares
capital
SH10 — capital-variation-of-rights-attached-to-shares
capital
SH08 — capital-name-of-class-of-shares
capital
SH01 — capital-allotment-shares
capital
AA — accounts-with-accounts-type-group
accounts
SH01 — capital-allotment-shares
capital
CS01 — confirmation-statement-with-updates
confirmation-statement
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
RP01AP01 — replacement-filing-of-director-appointment-with-name
officers
SH01 — capital-allotment-shares
capital
SH01 — capital-allotment-shares
capital
SH01 — capital-allotment-shares
capital
SH01 — capital-allotment-shares
capital
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
SH01 — capital-allotment-shares
capital
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address

Data protection register

No entry found on the ICO register of fee payers under this name.

Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.

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Frequently asked questions

What is the company number of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC?
According to the official registry, the company number of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC is 15630565.
Where is KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC registered?
The registered office is 105 PICCADILLY, SECOND FLOOR, LONDON, W1J 7NJ, ENGLAND.
Who runs KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC?
BARRY, Douglas, Mr. is listed among the officers of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC.
What is the SIC code of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC?
The nature of business is recorded under SIC code 21200 — Manufacture of pharmaceutical preparations.
Who controls KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC?
Baker Bros. Advisors Lp is recorded as a person with significant control, and owns 25–50% of shares.
When are the next accounts of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC due?
The next annual accounts are due by 30 June 2027, and the last accounts were made up to 31 December 2025.

About KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC (15630565)

KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC is a public limited company incorporated on 9 April 2024 and registered in the United Kingdom under company number 15630565. Its registered office is at 105 PICCADILLY, SECOND FLOOR, LONDON, W1J 7NJ, ENGLAND. The recorded nature of business is manufacture of pharmaceutical preparations (SIC 21200). The company is currently active , with statutory accounts last made up to 31 December 2025. 15 active officers are on record , and the person with significant control is Baker Bros. Advisors Lp. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 13 September 2026.

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