Barry D. Quart - 28 Apr 2026 Form 4 Insider Report for Kiniksa Pharmaceuticals International, plc (KNSA)

Reporting relationship: Director
Issuer ticker: KNSA
Reported as of: 28 Apr 2026
Net transaction value: -$656,260
SEC form: 4
Accepted by SEC: 29 Apr 2026, 16:46:07 UTC
Prior SEC filing: 08 Apr 2026
Next SEC filing: 02 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Douglas Barry, Attorney-in-Fact

Key filing fact

Barry D. Quart filed Form 4 for Kiniksa Pharmaceuticals International, plc (KNSA) on 29 Apr 2026.

Key facts

This page summarizes Barry D. Quart's Form 4 filing for Kiniksa Pharmaceuticals International, plc (KNSA).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 29 Apr 2026, 16:46.

Change

Previous filing in this sequence was filed on 08 Apr 2026.
Current net transaction value: -$656,260.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001384243 Primary reporting owner

Quart Barry D

Relationship: Director
Address: C/O KINIKSA PHARMACEUTICALS INT'L, 105 PICCADILLY, SECOND FLOOR, LONDON, UNITED KINGDOM
Signature: /s/ Douglas Barry, Attorney-in-Fact
Signature date: 29 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KNSA transaction

Class A Ordinary Share

Options Exercise

Transaction value
Shares: +13,099
Change %: +104%
Price: $14.33^*
Shares after: 25,645
Date: 28 Apr 2026
Ownership: Direct
Footnotes: F1

KNSA transaction

Class A Ordinary Share

Sale

Transaction value: $656,260
Shares: -13,099
Change %: -51%
Price: $50.10
Shares after: 12,546
Date: 28 Apr 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

KNSA transaction Derivative

Share Option

Options Exercise

Transaction value
Shares: -13,099
Change %: -50%
Price: $0.000000^*
Shares after: 13,237
Date: 28 Apr 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 13,099
Exercise price: $14.33
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

This transaction was effected pursuant to a 10b5-1 plan executed by the reporting person on September 11, 2025.

Footnote F2

This transaction was executed in multiple trades through a broker-dealer at prices ranging between $50.00 and $50.725. The price reported in this column reflects a weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price.

Footnote F3

The option is fully vested and exercisable.