Kiniksa (KNSA) COO receives major equity awards and exercises RSUs

Rhea-AI Filing Summary

Kiniksa Pharmaceuticals International, plc chief operating officer Ross Moat reported multiple equity awards and related share activity. On April 1, 2026, he received a share option grant for 36,950 shares with an exercise price of $48.13 per share, expiring on March 31, 2036.

He was also granted 9,250 Restricted Share Units and 18,500 Performance Share Units, each tied to Class A Ordinary Shares and subject to multi‑year vesting and, for PSUs, performance criteria through January 30, 2029. On the same date, he exercised previously granted RSUs into 5,808 Class A Ordinary Shares, with 1,706 shares withheld at $48.13 per share to cover tax obligations.

Following these transactions, Moat held 14,396 Class A Ordinary Shares directly. Earlier, on January 15, 2026, he acquired 879 Class A Ordinary Shares at $24.16 per share under the company’s 2018 Employee Share Purchase Plan, an acquisition noted as exempt under Rule 16b‑3(e).

Insights

Equity compensation analyst

Routine equity grants and RSU activity for Kiniksa’s COO, no open‑market buying or selling.

The filing shows Ross Moat receiving standard executive equity compensation: options for 36,950 shares at $48.13, 9,250 RSUs, and 18,500 PSUs. These awards align his pay with long‑term share performance through multi‑year vesting and performance criteria.

He also exercised RSUs into 5,808 Class A Ordinary Shares, with 1,706 shares withheld at $48.13 to satisfy tax obligations, a non‑market disposition. A prior acquisition of 879 shares at $24.16 under the 2018 Employee Share Purchase Plan was reported as exempt under Rule 16b‑3(e). Overall, these are compensation‑related, routine transactions rather than directional trading, and he now directly holds 14,396 Class A Ordinary Shares.

Insider Trade Summary

5,808 shares exercised/converted

Mixed 9 txns

Insider Moat Ross

Role CHIEF OPERATING OFFICER

Type	Security	Shares	Price	Value
Grant/Award	Share Option	36,950	$0.00	--
Grant/Award	Restricted Share Unit	9,250	$0.00	--
Grant/Award	Performance Share Unit	18,500	$0.00	--
Exercise	Restricted Share Unit	1,611	$0.00	--
Exercise	Restricted Share Unit	1,740	$0.00	--
Exercise	Restricted Share Unit	2,457	$0.00	--
Exercise	Class A Ordinary Share	5,808	$0.00	--
Tax Withholding	Class A Ordinary Share	1,706	$48.13	$82K
Grant/Award	Class A Ordinary Share	879	$24.16	$21K

Holdings After Transaction: Share Option — 36,950 shares (Direct); Restricted Share Unit — 9,250 shares (Direct); Performance Share Unit — 18,500 shares (Direct); Class A Ordinary Share — 16,102 shares (Direct)

Footnotes (1)

1. The reporting person is voluntarily reporting the acquisition of these shares pursuant to the Issuer's 2018 Employee Share Purchase Plan for the purchase period of July 16, 2025 to January 15, 2026. The acquisition of these shares was exempt pursuant to Rule 16b-3(e). Each Restricted Share Unit (RSU) represents a contingent right to receive one Class A Common Share of the Issuer. The option vests and becomes exercisable as to 25% of the total grant on the first anniversary of the vesting commencement date and vests in 36 equal monthly installments thereafter. The vesting commencement date is April 1, 2026. The RSUs vest over a four-year period, with 25% of the RSUs vesting on the vesting commencement date of April 1, 2026, and each yearly anniversary thereafter. Each Performance Share Unit (PSU) represents a contingent right to receive a number of Class A Ordinary Shares of the Issuer based upon the achievement of certain pre-established performance criteria, as certified by the Issuer's Compensation Committee. Unless earlier forfeited, each PSU vests and converts into not more than 200% of one Class A Ordinary Share of the Issuer no later than January 30, 2029, unless such date falls on a non-business date, in which case the next business date shall apply. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2023. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2024. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2025.

Key Figures

Option grant size: 36,950 shares Option exercise price: $48.13/share RSU grant: 9,250 units +5 more

8 metrics

Option grant size 36,950 shares Share option granted April 1, 2026 at $48.13 exercise price

Option exercise price $48.13/share Exercise price for 36,950-share option grant expiring March 31, 2036

RSU grant 9,250 units Restricted Share Units granted April 1, 2026

PSU grant 18,500 units Performance Share Units granted April 1, 2026

RSUs exercised 5,808 shares Class A Ordinary Shares acquired through RSU exercises on April 1, 2026

Tax withholding shares 1,706 shares Shares withheld at $48.13 to cover tax obligations on April 1, 2026

Shares held after transactions 14,396 shares Direct Class A Ordinary Shares held following April 1, 2026 activity

ESPP acquisition 879 shares at $24.16 Class A Ordinary Shares acquired January 15, 2026 under 2018 Employee Share Purchase Plan

Key Terms

Restricted Share Unit, Performance Share Unit, Employee Share Purchase Plan, Rule 16b-3(e), +1 more

5 terms

Restricted Share Unit financial

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

Performance Share Unit financial

"Each Performance Share Unit (PSU) represents a contingent right to receive a number of Class A Ordinary Shares"

A performance share unit (PSU) is a form of executive or employee pay that promises shares (or the cash value of shares) only if the company meets specific performance targets over a set period. Think of it like a bonus cheque that only arrives if the company hits agreed goals — it aligns managers’ rewards with business results and signals to investors how leadership is being incentivized to grow value over time.

Employee Share Purchase Plan financial

"acquisition of these shares pursuant to the Issuer's 2018 Employee Share Purchase Plan"

A program that lets employees buy their employer’s stock, often through regular payroll deductions and sometimes at a discounted price or with matching contributions; think of it as a company-run savings plan that converts part of pay into ownership. It matters to investors because it can increase insider ownership and employee motivation, potentially affecting company performance, and can slightly change share supply when new stock is issued or sold.

Rule 16b-3(e) regulatory

"The acquisition of these shares was exempt pursuant to Rule 16b-3(e)."

vesting commencement date financial

"The vesting commencement date is April 1, 2026."

The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.

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^*

Moat Ross

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
01/15/2026

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 Share	01/15/2026		A(1)		879	A	$24.16	10,294	D
Class A Ordinary Share	04/01/2026		M		5,808	A	(2)	16,102	D
Class A Ordinary Share	04/01/2026		F		1,706	D	$48.13	14,396	D

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	$48.13	04/01/2026		A		36,950		(3)	03/31/2036	Class A Ordinary Share	36,950	$0	36,950	D
Restricted Share Unit	(2)	04/01/2026		A		9,250		(4)	(4)	Class A Ordinary Share	9,250	$0	9,250	D
Performance Share Unit	(5)	04/01/2026		A		18,500		(6)	(6)	Class A Ordinary Share	18,500	$0	18,500	D
Restricted Share Unit	(2)	04/01/2026		M			1,611	(7)	(7)	Class A Ordinary Share	1,611	$0	1,161	D
Restricted Share Unit	(2)	04/01/2026		M			1,740	(8)	(8)	Class A Ordinary Share	1,740	$0	3,481	D
Restricted Share Unit	(2)	04/01/2026		M			2,457	(9)	(9)	Class A Ordinary Share	2,457	$0	7,371	D

Explanation of Responses:

1. The reporting person is voluntarily reporting the acquisition of these shares pursuant to the Issuer's 2018 Employee Share Purchase Plan for the purchase period of July 16, 2025 to January 15, 2026. The acquisition of these shares was exempt pursuant to Rule 16b-3(e).

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

3. The option vests and becomes exercisable as to 25% of the total grant on the first anniversary of the vesting commencement date and vests in 36 equal monthly installments thereafter. The vesting commencement date is April 1, 2026.

4. The RSUs vest over a four-year period, with 25% of the RSUs vesting on the vesting commencement date of April 1, 2026, and each yearly anniversary thereafter.

5. Each Performance Share Unit (PSU) represents a contingent right to receive a number of Class A Ordinary Shares of the Issuer based upon the achievement of certain pre-established performance criteria, as certified by the Issuer's Compensation Committee.

6. Unless earlier forfeited, each PSU vests and converts into not more than 200% of one Class A Ordinary Share of the Issuer no later than January 30, 2029, unless such date falls on a non-business date, in which case the next business date shall apply.

7. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2023.

8. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2024.

9. The RSUs vest over a four-year period, with 25% of the RSUs vesting on each yearly anniversary of the date of grant, April 1, 2025.

	/s/ Douglas Barry, Attorney-in-Fact	04/03/2026
	** 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 equity awards did Kiniksa (KNSA) COO Ross Moat receive on April 1, 2026?

On April 1, 2026, Ross Moat received a share option for 36,950 shares at $48.13, plus 9,250 Restricted Share Units and 18,500 Performance Share Units. All relate to Class A Ordinary Shares and vest over several years, with PSUs tied to performance criteria.

How many Kiniksa (KNSA) shares does the COO hold after these Form 4 transactions?

After the reported transactions, Ross Moat directly holds 14,396 Class A Ordinary Shares. This reflects RSU exercises into 5,808 shares, 1,706 shares withheld for taxes, and prior holdings including 879 shares acquired under the 2018 Employee Share Purchase Plan on January 15, 2026.

Were any of the Kiniksa (KNSA) COO’s Form 4 transactions open-market purchases or sales?

None of the reported transactions are open-market trades. They consist of equity grants (options, RSUs, PSUs), RSU exercises into shares, and a tax-withholding disposition of 1,706 shares, plus an earlier exempt acquisition of 879 shares through the 2018 Employee Share Purchase Plan under Rule 16b-3(e).

What are the key terms of Ross Moat’s 36,950-share option grant at Kiniksa (KNSA)?

The option covers 36,950 shares at a $48.13 exercise price and expires March 31, 2036. It vests 25% on the first anniversary of the April 1, 2026 vesting commencement date, then in 36 equal monthly installments, creating a long-term incentive structure.

How do Ross Moat’s Performance Share Units at Kiniksa (KNSA) vest?

Each Performance Share Unit represents a contingent right to receive Class A Ordinary Shares based on pre-established performance criteria. Unless forfeited, each PSU can convert into up to 200% of one share and will vest and convert no later than January 30, 2029, subject to Compensation Committee certification.