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NASDAQ: KNSA
Kiniksa Pharmaceuticals International PLC Stock Ownership - Who owns Kiniksa Pharmaceuticals International?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Kiniksa Pharmaceuticals International PLC insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Mark RagosaCHIEF FINANCIAL OFFICER2026-01-0812,000$41.89
$502.68kSell
Eben TessariCHIEF OPERATING OFFICER2025-12-1512,048$41.56
$500.71kSell
Barry D. QuartDirector2025-12-1520,129$41.51
$835.55kSell
Barry D. QuartDirector2025-12-1520,129$10.36
$208.54kBuy
Eben TessariCHIEF OPERATING OFFICER2025-12-156,000$8.83
$52.98kBuy
Mark RagosaCHIEF FINANCIAL OFFICER2025-12-0816,164$11.10
$179.42kBuy
Mark RagosaCHIEF FINANCIAL OFFICER2025-12-0816,165$11.97
$193.50kBuy
Mark RagosaCHIEF FINANCIAL OFFICER2025-12-0810,512$10.76
$113.11kBuy
Mark RagosaCHIEF FINANCIAL OFFICER2025-12-0842,841$41.49
$1.78MSell
Eben TessariCHIEF OPERATING OFFICER2025-11-26200$22.89
$4.58kBuy

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Net Insider Buy/Sell (L12M) Ownership

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KNSA Shareholders

What type of owners hold Kiniksa Pharmaceuticals International PLC stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Rubric Capital Management LP5.28%4,000,000$168.80MInstitution
Vanguard Group Inc4.04%3,063,135$129.26MInstitution
Baker Bros Advisors LP3.73%2,824,669$119.20MInstitution
Baker Bros Advisors LP3.63%2,753,656$116.20MInsider
Tang Capital Management LLC3.07%2,328,609$98.27MInstitution
Fairmount Funds Management LLC2.34%1,772,839$74.81MInstitution
Cormorant Asset Management LP2.28%1,731,442$73.07MInsider
Acadian Asset Management LLC2.14%1,618,521$68.30MInstitution
Morgan Stanley1.80%1,362,923$57.52MInstitution
James E. Flynn1.62%1,226,890$51.77MInsider

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KNSA vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
KNSA53.90%9.37%Net SellingNet Selling
XENE97.16%2.84%Net SellingNet Selling
ARQT76.71%23.29%Net SellingNet Selling
VCYT67.83%32.17%Net SellingNet Selling
VRDN74.98%25.02%Net BuyingNet Selling
View Top Biotech Stocks

Kiniksa Pharmaceuticals International Stock Ownership FAQ

Who owns Kiniksa Pharmaceuticals International?

Kiniksa Pharmaceuticals International (NASDAQ: KNSA) is owned by 53.90% institutional shareholders, 9.37% Kiniksa Pharmaceuticals International insiders, and 36.73% retail investors. Baker Bros Advisors LP is the largest individual Kiniksa Pharmaceuticals International shareholder, owning 2.75M shares representing 3.63% of the company. Baker Bros Advisors LP's Kiniksa Pharmaceuticals International shares are currently valued at $118.96M.

If you're new to stock investing, here's how to buy Kiniksa Pharmaceuticals International stock.
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