Kiniksa (NASDAQ: KNSA) CEO’s plan-based option exercises and 508K share sales detailed

Rhea-AI Filing Summary

Kiniksa Pharmaceuticals International, plc director and CEO Sanj K. Patel reported a series of option exercises and related share sales in late April. He exercised options to acquire a total of 508,339 Class A Ordinary Shares at exercise prices of $10.36 and $30.93 per share, then sold the same number of shares in open-market transactions.

The reported sales occurred on April 28–30, 2026, at weighted average prices generally between $50.00 and about $54.23 per share, under a pre-arranged Rule 10b5-1 trading plan executed on October 31, 2025. After these transactions, filings show continued indirect ownership through family trusts, including 51,794, 109,795 and 76,174 Class A Ordinary Shares held by separate Patel family trusts, and remaining vested options for 48,565 shares at a $30.93 exercise price expiring in 2028.

Insights

Insider transactions analyst

CEO’s late-April trades combine large option exercises with pre-planned share sales.

Sanj K. Patel, chairman and CEO of Kiniksa Pharmaceuticals International, plc, exercised options for 508,339 Class A Ordinary Shares at strike prices of $10.36 and $30.93, then sold an equivalent number of shares in open-market trades around $50–$54 per share.

The pattern reflects an exercise-and-sell sequence, turning long-held options into cash while maintaining equity exposure through indirect holdings and remaining options. A key detail is that at least some sales were made under a Rule 10b5-1 trading plan adopted on October 31, 2025, indicating the timing was pre-scheduled rather than reactive to short-term news.

Following these trades, Patel continues to have indirect ownership via several family trusts, and option records show 48,565 share options exercisable at $30.93 until 2028. The filing highlights notable liquidity-taking by a senior executive but, given the pre-planned nature and retained interests, it most cleanly reads as portfolio and compensation management rather than a clear directional signal on fundamentals.

Insider Trade Summary 10b5-1

Net Seller: 508,339 shares ($26,415,228)

Net Sell 17 txns

Insider Patel Sanj K

Role CHAIRMAN & CEO

Sold 508,339 shs ($26.42M)

Type	Security	Shares	Price	Value
Exercise	Share Option	2,141	$0.00	--
Exercise	Class A Ordinary Share	2,141	$30.93	$66K
Sale	Class A Ordinary Share	2,141	$54.01	$116K
Exercise	Share Option	22,544	$0.00	--
Exercise	Class A Ordinary Share	22,544	$30.93	$697K
Sale	Class A Ordinary Share	22,544	$54.01	$1.22M
Exercise	Share Option	431,904	$0.00	--
Exercise	Share Option	51,750	$0.00	--
Exercise	Class A Ordinary Share	431,904	$10.36	$4.47M
Exercise	Class A Ordinary Share	51,750	$30.93	$1.60M
Sale	Class A Ordinary Share	74,635	$50.43	$3.76M
Sale	Class A Ordinary Share	113,673	$51.47	$5.85M
Sale	Class A Ordinary Share	243,596	$52.02	$12.67M
Sale	Class A Ordinary Share	51,750	$54.02	$2.80M
holding	Class A Ordinary Share	--	--	--
holding	Class A Ordinary Share	--	--	--
holding	Class A Ordinary Share	--	--	--

Holdings After Transaction: Share Option — 48,565 shares (Direct, null); Class A Ordinary Share — 2,141 shares (Direct, null); Class A Ordinary Share — 76,174 shares (Indirect, Held by The Patel Family Irrevocable Trust of 2025)

Footnotes (1)

1. This transaction was effected pursuant to a 10b5-1 plan executed by the reporting person on October 31, 2025. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $50.00 and $50.985. 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. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $51.00 and $51.99. 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. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $52.00 and $52.58. 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. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.22. 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. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.225. 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. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.03. 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. The option is fully vested and exercisable.

Key Figures

Shares sold: 508,339 shares Options exercised: 508,339 shares Exercise price (low grant): $10.36/share +5 more

8 metrics

Shares sold 508,339 shares Total Class A Ordinary Shares sold in late April 2026

Options exercised 508,339 shares Total shares acquired via option exercises at $10.36 and $30.93

Exercise price (low grant) $10.36/share Strike price on 431,904-share option block exercised April 28, 2026

Exercise price (higher grant) $30.93/share Strike price on multiple option exercises across April 28–30, 2026

Remaining vested options 48,565 shares Share options at $30.93 expiring September 19, 2028

Indirect trust holding 1 51,794 shares Class A Ordinary Shares held by The Anglia 2013 Revocable Trust

Indirect trust holding 2 109,795 shares Class A Ordinary Shares held by The Marina 2016 Irrevocable Trust

Indirect trust holding 3 76,174 shares Class A Ordinary Shares held by The Patel Family Irrevocable Trust of 2025

Key Terms

Rule 10b5-1, weighted average sales price, open-market sale, Class A Ordinary Share, +2 more

6 terms

Rule 10b5-1 regulatory

"This transaction was effected pursuant to a 10b5-1 plan executed by the reporting person"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

weighted average sales price financial

"The price reported in this column reflects a weighted average sales price"

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Ordinary Share financial

"security_title: "Class A Ordinary Share""

A Class A ordinary share is a type of common stock a company issues that carries a specific set of rights—most often particular voting power, dividend terms, or transfer rules—distinct from other share classes. For investors it matters because those rights affect control over company decisions, how income is paid out, and how easy shares are to buy or sell; think of it like a tiered ticket that gives different access and influence at the same event.

Share Option financial

"security_title: "Share Option""

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion""

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).

X

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^*

Patel Sanj K

(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
X	Officer (give title below)		Other (specify below)
	CHAIRMAN & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/28/2026

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	04/28/2026		M(1)		431,904	A	$10.36	431,904	D
Class A Ordinary Share	04/28/2026		M(1)		51,750	A	$30.93	483,654	D
Class A Ordinary Share	04/28/2026		S(1)		74,635	D	$50.43(2)	409,019	D
Class A Ordinary Share	04/28/2026		S(1)		113,673	D	$51.47(3)	295,346	D
Class A Ordinary Share	04/28/2026		S(1)		243,596	D	$52.02(4)	51,750	D
Class A Ordinary Share	04/28/2026		S(1)		51,750	D	$54.02(5)	0	D
Class A Ordinary Share	04/29/2026		M(1)		22,544	A	$30.93	22,544	D
Class A Ordinary Share	04/29/2026		S(1)		22,544	D	$54.01(6)	0	D
Class A Ordinary Share	04/30/2026		M(1)		2,141	A	$30.93	2,141	D
Class A Ordinary Share	04/30/2026		S(1)		2,141	D	$54.01(7)	0	D
Class A Ordinary Share								76,174	I	Held by The Patel Family Irrevocable Trust of 2025
Class A Ordinary Share								109,795	I	Held by The Marina 2016 Irrevocable Trust, u/d/t June 23, 2016
Class A Ordinary Share								51,794	I	Held by The Anglia 2013 Revocable Trust

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	$10.36	04/28/2026		M(1)			431,904	(8)	02/29/2028	Class A Ordinary Share	431,904	$0	0	D
Share Option	$30.93	04/28/2026		M(1)			51,750	(8)	09/19/2028	Class A Ordinary Share	51,750	$0	73,250	D
Share Option	$30.93	04/29/2026		M(1)			22,544	(8)	09/19/2028	Class A Ordinary Share	22,544	$0	50,706	D
Share Option	$30.93	04/30/2026		M(1)			2,141	(8)	09/19/2028	Class A Ordinary Share	2,141	$0	48,565	D

Explanation of Responses:

1. This transaction was effected pursuant to a 10b5-1 plan executed by the reporting person on October 31, 2025.

2. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $50.00 and $50.985. 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.

3. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $51.00 and $51.99. 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.

4. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $52.00 and $52.58. 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.

5. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.22. 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.

6. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.225. 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.

7. This transaction was executed in multiple trades through a broker-dealer at prices ranging between $54.00 and $54.03. 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.

8. The option is fully vested and exercisable.

	/s/ Douglas Barry, Attorney-in-Fact	04/30/2026
	** 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) CEO Sanj K. Patel report?

Sanj K. Patel reported exercising options for 508,339 Class A Ordinary Shares, then selling the same number of shares in open-market trades. These transactions occurred over April 28–30, 2026, converting option-based compensation into cash while still leaving him with indirect and option holdings.

At what prices did Kiniksa (KNSA) shares trade in the reported CEO sales?

The reported sales used weighted average prices generally between about $50.00 and $54.23 per share. Several trades were executed through a broker-dealer in multiple lots within narrower ranges, reflecting typical execution across the bid–ask spread during the trading sessions.

Were Kiniksa CEO Sanj K. Patel’s share sales under a Rule 10b5-1 plan?

Yes. A footnote states at least one transaction was effected under a Rule 10b5-1 trading plan executed on October 31, 2025. Such pre-arranged plans schedule trades in advance, so the timing is not based on contemporaneous, discretionary decisions about Kiniksa’s share price.

What option exercises did the Kiniksa (KNSA) Form 4 disclose for the CEO?

The filing shows exercises of options to acquire 508,339 Class A Ordinary Shares at exercise prices of $10.36 and $30.93 per share. These exercises converted previously granted derivative awards into common stock, which was then sold in the market in corresponding quantities.

Does Kiniksa’s CEO still hold shares after these reported transactions?

According to the filing, Sanj K. Patel continues to have indirect ownership through several family trusts, holding 51,794, 109,795 and 76,174 Class A Ordinary Shares respectively. He also has remaining vested share options for 48,565 shares at a $30.93 exercise price expiring in 2028.

How large were Kiniksa (KNSA) CEO Patel’s net share sales in this Form 4?

The transaction summary shows total sales of 508,339 Class A Ordinary Shares, matched by exercises for 508,339 shares. This indicates a net-sell position in common shares over the period, while still retaining indirect holdings and outstanding vested options.