Every Form 4 that Kiniksa Pharmaceuticals International, plc (KNSA) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow KNSA and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full KNSA filings page.
Kiniksa Pharmaceuticals International, plc (KNSA) disclosed insider transactions by its Chairman & CEO under a Rule 10b5-1 plan. On 10/20–10/22/2025, the insider exercised 257,969 share options at $3.80 and sold an equal 257,969 Class A Ordinary Shares in brokered trades.
Weighted average sale prices reported include $38.81 (range $38.14–$39.135), $39.32 (range $39.14–$39.55), $38.77 (range $38.49–$39.235), and $38.83 (range $38.495–$39.255). Following these transactions, direct holdings were 111,794 shares. An additional 109,795 shares were held indirectly by The Marina 2016 Irrevocable Trust.
Kiniksa Pharmaceuticals (KNSA) insider transaction: The company’s Chief Accounting Officer exercised multiple vested stock options and sold shares on 10/20/2025 pursuant to a Rule 10b5-1 plan executed on May 24, 2025. Option exercises added 791 shares at $15.50, 6,195 at $12.97, 9,831 at $11.10, 9,831 at $11.97, and 12,787 at $10.76.
The insider then sold 37,255 shares at a weighted average price of $38.72 (trades ranged from $38.14 to $39.135) and 13,235 shares at a weighted average price of $39.31 (trades ranged from $39.145 to $39.57). After these transactions, the insider beneficially owned 27,046 Class A ordinary shares, held directly. The filing notes the options were fully vested and exercisable.
Kiniksa Pharmaceuticals (KNSA) reported a Form 4 for its COO. On 10/14/2025, the officer exercised 6,500 options at $8.83 and sold 11,815 shares at a $37.65 weighted average and 553 shares at $37.99, executed through multiple trades under a Rule 10b5-1 plan adopted on April 29, 2024. Following these transactions, the officer beneficially owned 28,684 Class A shares directly and 12,500 options remained held. The reported option was fully vested and exercisable.
Kiniksa Pharmaceuticals (KNSA) officer Michael R. Megna reported changes in beneficial ownership on 10/04/2025. The filing shows 175 restricted share units (RSUs) granted (transaction code M) that convert into Class A ordinary shares and vest over four years with 25% vesting each anniversary of the grant date of 10/04/2021. The reporting person also recorded a sale of 85 Class A ordinary shares (transaction code F) at $38.49, leaving 38,101 shares owned after the sale. Following the RSU grant, total beneficial ownership is reported as 38,186 shares. The form was signed by an attorney-in-fact on 10/08/2025.
Tessari Eben, Chief Operating Officer of Kiniksa Pharmaceuticals International plc (KNSA), exercised 42,000 previously granted options at an exercise price of $17.92 on 09/29/2025, acquiring 42,000 Class A ordinary shares. The option is fully vested and exercisable and has an expiration date of 03/03/2029.
The reporting person sold 42,000 Class A ordinary shares the same day under a 10b5-1 trading plan established April 29, 2024, at a weighted-average sales price of $38.33 per share (trades ranged $37.92–$38.85). After these transactions the reporting person beneficially owned 34,552 Class A ordinary shares.