Kiniksa Pharmaceuticals International, plc, a biopharmaceutical company, develops and commercializes medical therapies in the United States, the United Kingdom, and internationally. The company offers ARCALYST, an interleukin-1alpha and 1beta cytokine trap for the treatment of recurrent pericarditis, a chronic autoinflammatory cardiovascular disease and cardiac sarcoidosis. It also develops KPL-387, an investigational and fully human immunoglobulin G2 monoclonal antibody, which is Phase 2/3 clinical trial for the treatment of recurrent pericarditis; and KPL-116, a Fc-modified immunoglobulin G2 monoclonal antibody, which is in pre-clinical stage. The company was formerly known as Kiniksa Pharmaceuticals, Ltd. and changed its name to Kiniksa Pharmaceuticals International, plc in June 2024. Kiniksa Pharmaceuticals International, plc was incorporated in 2015 and is based in London, the United Kingdom. Show more

105 Piccadilly, London, W1J 7NJ, United Kingdom

https://www.kiniksa.com

Drug Manufacturers - Specialty & Generic

Healthcare

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Market Cap

3.504B

52 Wk Range

$18.25 - $49.12

Previous Close

$45.78

Open

$45.75

Volume

770,652

Day Range

$45.75 - $47.83

Enterprise Value

3.116B

Cash

414.1M

Avg Qtr Burn

N/A

Insider Ownership

3.47%

Institutional Own.

Qtr Updated

12/31/25

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Drug & Indication	Stage & Event	Catalyst Date
ARCALYST (Rilonacept) (IL-1α & IL-1β) Details Recurrent Pericarditis	Approved Quarterly sales	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
KPL-387 Details Recurrent pericarditis	Phase 2/3 Data readout	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Vixarelimab (OSMRβ) (KPL-716) Details Skin disease/disorder, Prurigo nodularis	Phase 2b Update	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Abiprubart (KPL-404) (CD40) Details Autoimmune disease, Rheumatoid arthritis	Phase 2 Update	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
KPL-1161 (IL-1R1 Antagonist) Details Unspecified indication	Phase 1 Initiation	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Abiprubart (KPL-404) (CD40) Details Sjögren-Larsson Syndrome	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Mavrilimumab (GM-CSFRa) Details COVID-19, Pneumonia	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Mavrilimumab (GM-CSFRa) Details Inflammatory disease, Giant cell arteritis	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.