KNSA
Kiniksa Pharmaceuticals Ltd
96.30$
+0.5%
vs. previous close
Closing price · As of: Nov 12, 2026
Ownership
Ownership Structure
Who owns Kiniksa Pharmaceuticals Ltd (KNSA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 83.1% of the shares are freely tradable; institutional investors hold 104.7%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
104.7%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
3.5%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
83.1%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
9.3%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
49Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 8.87 | 6,971,361 | +2.2 | 06/30/2026 |
| Rubric Capital Management LP | 5.09 | 3,999,800 | +6.7 | 06/30/2026 |
| Baker Bros Advisors LP | 3.61 | 2,834,643 | +0.3 | 06/30/2026 |
| BlackRock Inc | 3.49 | 2,739,615 | +462.9 | 06/30/2026 |
| TANG CAPITAL MANAGEMENT LLC | 2.88 | 2,259,889 | +0.0 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 2.43 | 1,911,335 | +8.2 | 06/30/2026 |
| Vanguard Capital Management, LLC | 1.73 | 1,360,840 | +2.1 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 1.29 | 1,011,143 | +1.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 1.77 | 1,391,725 | +5.3 | 09/30/2026 |
| iShares Russell 2000 ETF | 1.47 | 1,155,283 | +0.0 | 10/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Patel Sanj K | CHAIRMAN & CEO | 866,848 | 83,477,462 $ | Sep 1, 2026 | indirect |
| Paolini John F. | CHIEF MEDICAL OFFICER | 69,922 | 6,733,489 $ | Nov 2, 2026 | direct |
| Ragosa Mark | CHIEF FINANCIAL OFFICER | 20,854 | 2,008,240 $ | Nov 2, 2026 | direct |
| Quart Barry D | Director | 12,745 | 1,227,344 $ | Aug 19, 2026 | direct |
| Megna Michael R | CHIEF ACCOUNTING OFFICER | 12,697 | 1,222,721 $ | Nov 9, 2026 | direct |
| Moat Ross | CHIEF OPERATING OFFICER | 10,294 | 991,312 $ | Nov 2, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Nov 9, 2026 | Megna Michael R | CHIEF ACCOUNTING OFFICER | Sell | 11,280 | 98.54 | 1,111,531 |
| Nov 9, 2026 | Megna Michael R | CHIEF ACCOUNTING OFFICER | Other | 11,280 | 17.76 | 200,333 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 26,918 | 96.05 | 2,585,474 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 29,845 | 95.48 | 2,849,601 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 81,742 | 94.20 | 7,700,096 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 11,335 | 93.54 | 1,060,276 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 1,460 | 92.35 | 134,831 |
| Nov 4, 2026 | Patel Sanj K | CHAIRMAN & CEO | Other | 145,763 | 17.92 | 2,612,073 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 4,584 | 94.25 | 432,042 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 145,708 | 93.53 | 13,628,069 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 68,664 | 92.70 | 6,365,153 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 1,214 | 90.77 | 110,195 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Other | 41,237 | 17.92 | 738,967 |
| Nov 3, 2026 | Patel Sanj K | CHAIRMAN & CEO | Other | 89,089 | 8.83 | 786,656 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 722 | 94.05 | 67,904 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 11,642 | 93.15 | 1,084,452 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 8,932 | 92.05 | 822,191 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 6,681 | 91.23 | 609,508 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 6,263 | 22.89 | 143,360 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 12,302 | 21.77 | 267,815 |
| Nov 2, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 9,412 | 18.06 | 169,981 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Sell | 220 | 94.01 | 20,682 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Sell | 12,034 | 93.13 | 1,120,726 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Sell | 10,502 | 92.03 | 966,499 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Sell | 14,027 | 91.40 | 1,282,068 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Other | 12,123 | 11.97 | 145,112 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Other | 5,388 | 11.10 | 59,807 |
| Nov 2, 2026 | Ragosa Mark | CHIEF FINANCIAL OFFICER | Other | 9,636 | 17.76 | 171,135 |
| Nov 2, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | 704 | 94.09 | 66,239 |
| Nov 2, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | 16,810 | 93.42 | 1,570,390 |
| Nov 2, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Sell | 899 | 92.37 | 83,041 |
| Nov 2, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Other | 11,958 | 17.92 | 214,287 |
| Nov 2, 2026 | Paolini John F. | CHIEF MEDICAL OFFICER | Other | 6,455 | 30.93 | 199,653 |
| Nov 2, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 100 | 93.97 | 9,397 |
| Nov 2, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 26,781 | 93.06 | 2,492,240 |
| Nov 2, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 24,188 | 91.83 | 2,221,184 |
| Nov 2, 2026 | Patel Sanj K | CHAIRMAN & CEO | Sell | 38,364 | 91.03 | 3,492,275 |
| Nov 2, 2026 | Patel Sanj K | CHAIRMAN & CEO | Other | 53,381 | 8.83 | 471,354 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 2,575 | 97.76 | 251,732 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 1,760 | 97.10 | 170,896 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 3,672 | 96.03 | 352,622 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 6,282 | 94.92 | 596,287 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 8,430 | 93.97 | 792,167 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 15,114 | 92.81 | 1,402,730 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Sell | 37,775 | 92.00 | 3,475,300 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 10,895 | 18.06 | 196,764 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 16,112 | 17.76 | 286,149 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 1,658 | 12.97 | 21,504 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 3,760 | 11.97 | 45,007 |
| Oct 30, 2026 | Moat Ross | CHIEF OPERATING OFFICER | Other | 21,059 | 11.10 | 233,755 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 12, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.