Is the 900,000-share transaction for Kiniksa considered a derivative conversion?

Yes. The Form 4 classifies the 900,000-share event as a “conversion of derivative security,” moving shares from Class B Ordinary Shares into Class A Ordinary Shares at a stated conversion price of $0.00 per share within a related trust.

CEO-linked trust converts 900,000 Kiniksa (NASDAQ: KNSA) Class B shares

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Kiniksa Pharmaceuticals International, plc reported that trusts associated with Chairman and CEO Sanj K. Patel adjusted their holdings of ordinary shares. The Anglia 2013 Revocable Trust converted 900,000 Class B Ordinary Shares into 900,000 Class A Ordinary Shares at a stated price of $0.00 per share, a non-cash derivative conversion rather than a market trade.

After this conversion, the Anglia 2013 Revocable Trust holds 951,794 Class A Ordinary Shares and 626,160 Class B Ordinary Shares. Separate family trusts report indirect holdings of 76,174 and 109,795 Class A Ordinary Shares. The filing reflects changes in share classes held through family trusts, not open-market buying or selling.

Insider Trade Summary

900,000 shares exercised/converted

Mixed 4 txns

Insider Patel Sanj K

Role CHAIRMAN & CEO

Type	Security	Shares	Price	Value
Conversion	Class B Ordinary Shares	900,000	$0.00	--
Conversion	Class A Ordinary Share	900,000	$0.00	--
holding	Class A Ordinary Share	--	--	--
holding	Class A Ordinary Share	--	--	--

Holdings After Transaction: Class B Ordinary Shares — 626,160 shares (Indirect, The Anglia 2013 Revocable Trust); Class A Ordinary Share — 951,794 shares (Indirect, The Anglia 2013 Revocable Trust)

Footnotes (1)

[object Object]

Key Figures

Converted shares: 900,000 shares Conversion price: $0.00 per share Class A held by Anglia trust: 951,794 shares +3 more

6 metrics

Converted shares 900,000 shares Class B Ordinary Shares converted into Class A Ordinary Shares

Conversion price $0.00 per share Stated transaction price for the 900,000-share conversion

Class A held by Anglia trust 951,794 shares Post-conversion Class A Ordinary Shares, Anglia 2013 Revocable Trust

Class B held by Anglia trust 626,160 shares Post-conversion Class B Ordinary Shares, Anglia 2013 Revocable Trust

Class A held by Patel Family Irrevocable Trust 76,174 shares Indirect Class A Ordinary Shares position

Class A held by Marina 2016 Irrevocable Trust 109,795 shares Indirect Class A Ordinary Shares position

Key Terms

Class A Ordinary Share, Class B Ordinary Shares, conversion of derivative security, irrevocable trust, +1 more

5 terms

Class B Ordinary Shares financial

"security_title: Class B Ordinary Shares in derivative conversion entry"

Class B ordinary shares are a type of ownership stake in a company that typically come with different voting rights or privileges compared to other share classes. For investors, they represent a way to hold part of the company’s value and influence its decisions, often with fewer voting rights than Class A shares. Understanding these shares helps investors assess their level of control and potential returns within a company.

conversion of derivative security financial

"transaction_code_description: Conversion of derivative security"

irrevocable trust financial

"Held by The Patel Family Irrevocable Trust of 2025"

An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.

revocable trust financial

"nature_of_ownership: The Anglia 2013 Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

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Form 4 Insider Transactions: What Each Field Means →

06/02/2026 - 04:50 PM

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^*

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)
06/01/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Ordinary Share	06/01/2026		C		900,000	A	⁽¹⁾	951,794	I	The Anglia 2013 Revocable Trust
Class A Ordinary Share								109,795	I	Held by The Marina 2016 Irrevocable Trust, u/d/t June 23, 2016
Class A Ordinary Share								76,174	I	Held by The Patel Family Irrevocable Trust of 2025

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Class B Ordinary Shares	⁽¹⁾	06/01/2026		C			900,000	⁽¹⁾	⁽¹⁾	Class A Ordinary Share	900,000	$0	626,160	I	The Anglia 2013 Revocable Trust

Explanation of Responses:

1. Each share of Class B Ordinary Shares is convertible at any time at the election of the holder, subject to certain contractual arrangements entered into between the Reporting Person and the Issuer, into one share of Class A Ordinary Shares or one share of Class B1 Ordinary Shares and will automatically convert into Class A Ordinary Shares upon transfer to an unaffiliated party.

	/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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Kiniksa (KNSA) disclose in this Form 4 for Sanj K. Patel?

Kiniksa disclosed that trusts associated with Chairman and CEO Sanj K. Patel converted 900,000 Class B Ordinary Shares into Class A Ordinary Shares, and reported updated indirect holdings across several family trusts holding Class A and Class B shares.

Did Sanj K. Patel buy or sell Kiniksa (KNSA) shares on the market?

The Form 4 shows a conversion of 900,000 Class B Ordinary Shares into Class A Ordinary Shares at $0.00 per share, not an open-market purchase or sale. The reported activity is a non-cash derivative conversion within related trusts.

How many Kiniksa Class A shares does the Anglia 2013 Revocable Trust hold after the transaction?

Following the derivative conversion, The Anglia 2013 Revocable Trust holds 951,794 Kiniksa Class A Ordinary Shares. It also continues to hold 626,160 Class B Ordinary Shares, reflecting a change in the mix of share classes rather than a change in overall economic exposure.

What happened to Kiniksa Class B Ordinary Shares in this Form 4?

The Anglia 2013 Revocable Trust converted 900,000 Kiniksa Class B Ordinary Shares into 900,000 Class A Ordinary Shares. After this conversion, the trust still holds 626,160 remaining Class B Ordinary Shares, according to the reported post-transaction balances.

What indirect Kiniksa (KNSA) holdings do other Patel family trusts report?

The filing shows The Patel Family Irrevocable Trust of 2025 holding 76,174 Class A Ordinary Shares and The Marina 2016 Irrevocable Trust holding 109,795 Class A Ordinary Shares. These positions are reported as indirect holdings associated with Sanj K. Patel.