Kiniksa (KNSA) director Malley exercises RSUs and receives new option grant

Rhea-AI Filing Summary

Kiniksa Pharmaceuticals director Thomas Malley reported equity compensation transactions and updated holdings. On May 29, 2026, he exercised 2,799 Restricted Share Units, receiving the same number of Class A Ordinary Shares at a stated price of $0.00 per share.

On the same date, he received a new grant of 2,026 Restricted Share Units and a share option for 12,158 Class A Ordinary Shares with an exercise price of $48.38 per share. The option vests in twelve substantially equal monthly installments following the grant date, with the final installment vesting on the earlier of the first anniversary of the grant or the issuer’s next annual meeting of shareholders.

Following these transactions, Malley directly holds 15,345 Class A Ordinary Shares. An additional 71,967 Class A Ordinary Shares are held indirectly through Mossrock Capital, LLC, where he serves as president and may be deemed to beneficially own those shares.

Insider Trade Summary

2,799 shares exercised/converted

Mixed 5 txns

Insider Malley Thomas

Role null

Type	Security	Shares	Price	Value
Grant/Award	Share Option	12,158	$0.00	--
Grant/Award	Restricted Share Units	2,026	$0.00	--
Exercise	Restricted Share Units	2,799	$0.00	--
Exercise	Class A Ordinary Shares	2,799	$0.00	--
holding	Class A Ordinary Shares	--	--	--

Holdings After Transaction: Share Option — 12,158 shares (Direct, null); Restricted Share Units — 2,026 shares (Direct, null); Class A Ordinary Shares — 15,345 shares (Direct, null); Class A Ordinary Shares — 71,967 shares (Indirect, See footnote)

Footnotes (1)

1. Each Restricted Share Unit (RSU) represents a contingent right to receive one Class A Ordinary Share of the Issuer. Mr. Malley is the president of Mossrock Capital, LLC (Mossrock) and may be deemed to beneficially own the shares owned by Mossrock. The option vests and becomes exercisable in twelve substantially equal monthly installments following the date of the grant with the final installment vesting on the earlier of a) the anniversary of the date of the grant and b) the date of the Issuer's annual meeting of shareholders in the following year. The date of the grant is May 29, 2026. The RSUs vest in their entirety on the earlier of a) the anniversary of the date of the grant and b) the date of the Issuer's annual meeting of shareholders in the following year. The date of the grant is May 29, 2026. The RSUs vested in a single installment on May 29, 2026; there was no expiration date for the RSUs.

Key Figures

RSUs exercised: 2,799 shares New RSU grant: 2,026 units New option grant: 12,158 shares +3 more

6 metrics

RSUs exercised 2,799 shares Restricted Share Units converted to Class A Ordinary Shares on May 29, 2026

New RSU grant 2,026 units Restricted Share Units granted on May 29, 2026

New option grant 12,158 shares Share option for Class A Ordinary Shares granted May 29, 2026

Option exercise price $48.38/share Exercise price of newly granted share option

Direct holdings after 15,345 shares Class A Ordinary Shares held directly following transactions

Indirect holdings 71,967 shares Class A Ordinary Shares held via Mossrock Capital, LLC

Key Terms

Restricted Share Unit, Share Option, beneficially own, annual meeting of shareholders

4 terms

Restricted Share Unit financial

"Each Restricted Share Unit (RSU) represents a contingent right to receive one Class A Ordinary Share"

A restricted share unit (RSU) is a promise by a company to give an employee a set number of company shares at a future date, typically after meeting time or performance conditions. For investors, RSUs matter because when they convert into actual shares they increase the number of shares outstanding (like unlocking more tickets in a game), which can dilute existing holders, and they align employee incentives with company performance, influencing behavior and long-term value.

Share Option financial

"The option vests and becomes exercisable in twelve substantially equal monthly installments"

beneficially own financial

"may be deemed to beneficially own the shares owned by Mossrock"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

annual meeting of shareholders financial

"the date of the Issuer's annual meeting of shareholders in the following year"

A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Malley Thomas

(Last) (First) (Middle)

C/O KINIKSA PHARMACEUTICALS INT'L

105 PICCADILLY, SECOND FLOOR

(Street)

LONDON W1J 7NJ

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
Kiniksa Pharmaceuticals International, plc [ KNSA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Shares	05/29/2026		M		2,799	A	(1)	15,345	D
Class A Ordinary Shares								71,967	I	See footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Share Option	$48.38	05/29/2026		A		12,158		(3)	05/28/2036	Class A Ordinary Shares	12,158	$0	12,158	D
Restricted Share Units	(1)	05/29/2026		A		2,026		(4)	(4)	Class A Ordinary Shares	2,026	$0	2,026	D
Restricted Share Units	(1)	05/29/2026		M			2,799	(5)	(5)	Class A Ordinary Shares	2,799	$0	0	D

Explanation of Responses:

1. Each Restricted Share Unit (RSU) represents a contingent right to receive one Class A Ordinary Share of the Issuer.

2. Mr. Malley is the president of Mossrock Capital, LLC (Mossrock) and may be deemed to beneficially own the shares owned by Mossrock.

3. The option vests and becomes exercisable in twelve substantially equal monthly installments following the date of the grant with the final installment vesting on the earlier of a) the anniversary of the date of the grant and b) the date of the Issuer's annual meeting of shareholders in the following year. The date of the grant is May 29, 2026.

4. The RSUs vest in their entirety on the earlier of a) the anniversary of the date of the grant and b) the date of the Issuer's annual meeting of shareholders in the following year. The date of the grant is May 29, 2026.

5. The RSUs vested in a single installment on May 29, 2026; there was no expiration date for the RSUs.

	/s/ Douglas Barry, Attorney-in-Fact	06/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Kiniksa (KNSA) director Thomas Malley report?

Thomas Malley reported equity compensation activity, including exercising 2,799 Restricted Share Units into Class A Ordinary Shares and receiving new grants of 2,026 RSUs and a share option for 12,158 Class A Ordinary Shares on May 29, 2026.

How many Kiniksa (KNSA) shares does Thomas Malley hold directly and indirectly?

After the reported transactions, Thomas Malley directly holds 15,345 Class A Ordinary Shares. An additional 71,967 Class A Ordinary Shares are held indirectly through Mossrock Capital, LLC, where he is president and may be deemed to beneficially own those shares.

What are the terms of Thomas Malley’s new Kiniksa (KNSA) share option grant?

Malley received a share option covering 12,158 Class A Ordinary Shares with an exercise price of $48.38 per share. The option vests in twelve substantially equal monthly installments starting from May 29, 2026, with final vesting tied to the next annual shareholder meeting or the grant anniversary.

How do Thomas Malley’s Restricted Share Units in Kiniksa (KNSA) vest?

Each Restricted Share Unit represents a right to receive one Class A Ordinary Share. Newly granted RSUs vest in full on the earlier of the first anniversary of the May 29, 2026 grant date or the next annual meeting of shareholders, while previously granted RSUs vested entirely on May 29, 2026.

Were any Kiniksa (KNSA) shares bought or sold on the market in this Form 4?

The Form 4 reflects compensation-related events: an exercise of 2,799 Restricted Share Units into Class A Ordinary Shares and grants of 2,026 RSUs and a 12,158-share option. It does not report open-market purchases or sales by Thomas Malley.