MEGNA MICHAEL R (Chief Accounting Officer) sold 13.7% of their position (4.60K shares) of KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC on the open market

Open‑market sale worth $369.4K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

MEGNA MICHAEL R

Filed: 9/3/2026ACC: 0001464583-26-000008

InsiderMEGNA MICHAEL RCIK 1464583

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IssuerKINIKSA PHARMACEUTICALS INTERNATIONAL, PLCCIK 1730430

Officer· Chief Accounting Officer

Since Feb 2020

+8.40K

Net shares

Net buyer

$807.9K

Total sold

Open market trades

0B · 1S

Total transactions

30.02K acquired · 21.63K disposed

Non-Derivative Transactions7

Class A Ordinary Share

Direct

A · Award

+279.00

Price / share

$33.50

Trade value

$9.35K

% of position

1.0%

7/15/2026

27.42K→27.70K

Class A Ordinary Share

Direct

M · Option Exercise

+3.93K

Price / share

—

Trade value

—

% of position

14.2%

9/1/2026

27.70K→31.63K

Class A Ordinary Share

Direct

M · Option Exercise

+2.56K

Price / share

—

Trade value

—

% of position

8.1%

9/1/2026

31.63K→34.19K

Class A Ordinary Share

Direct

M · Option Exercise

+2.36K

Price / share

—

Trade value

—

% of position

6.9%

9/1/2026

34.19K→36.55K

Class A Ordinary Share

Direct

M · Option Exercise

+2.64K

Price / share

—

Trade value

—

% of position

7.2%

9/1/2026

36.55K→39.19K

Class A Ordinary Share

Direct

F · Tax Withholding

−5.53K

Price / share

$79.28

Trade value

$438.50K

% of position

14.1%

9/1/2026

39.19K→33.66K

Class A Ordinary Share

Direct

S · Sale

−4.60K

Price / share

$80.30

Trade value

$369.38K

% of position

13.7%

9/3/2026

33.66K→29.06K

Total

Net shares

+1.64K

Net value

-$798.53K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Ordinary Share Direct	7/15/2026	A · Award	+279.00	$33.50	$9.35K	1.0%	27.42K	27.70K
Class A Ordinary Share Direct	9/1/2026	M · Option Exercise	+3.93K	—	—	14.2%	27.70K	31.63K
Class A Ordinary Share Direct	9/1/2026	M · Option Exercise	+2.56K	—	—	8.1%	31.63K	34.19K
Class A Ordinary Share Direct	9/1/2026	M · Option Exercise	+2.36K	—	—	6.9%	34.19K	36.55K
Class A Ordinary Share Direct	9/1/2026	M · Option Exercise	+2.64K	—	—	7.2%	36.55K	39.19K
Class A Ordinary Share Direct	9/1/2026	F · Tax Withholding	−5.53K	$79.28	$438.50K	14.1%	39.19K	33.66K
Class A Ordinary Share Direct	9/3/2026	S · Sale	−4.60K	$80.30	$369.38K	13.7%	33.66K	29.06K
Total			+1.64K		-$798.53K

Derivative Transactions6

Restricted Share Unit

Direct

A · Award

Converts to

Class A Ordinary Share

3.65K shares

+3.65K

Strike price

Held after

3.65K

Exercisable

—

9/1/2026

Share Option

Direct

A · Award

Converts to

Class A Ordinary Share

14.60K shares

+14.60K

Strike price

79.28

Held after

14.60K

Exercisable

—

9/1/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Class A Ordinary Share

2.64K shares

−2.64K

Strike price

Held after

7.93K

Exercisable

—

9/1/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Class A Ordinary Share

2.36K shares

−2.36K

Strike price

Held after

4.72K

Exercisable

—

9/1/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Class A Ordinary Share

2.56K shares

−2.56K

Strike price

Held after

2.56K

Exercisable

—

9/1/2026

Restricted Share Unit

Direct

M · Option Exercise

Converts to

Class A Ordinary Share

3.93K shares

−3.93K

Strike price

Held after

0.00

Exercisable

—

9/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Share Unit Direct	Class A Ordinary Share3.65K shares	9/1/2026	A · Award	+3.65K		—	3.65K
Share Option Direct	Class A Ordinary Share14.60K shares	9/1/2026	A · Award	+14.60K	79.28	—	14.60K
Restricted Share Unit Direct	Class A Ordinary Share2.64K shares	9/1/2026	M · Option Exercise	−2.64K		—	7.93K
Restricted Share Unit Direct	Class A Ordinary Share2.36K shares	9/1/2026	M · Option Exercise	−2.36K		—	4.72K
Restricted Share Unit Direct	Class A Ordinary Share2.56K shares	9/1/2026	M · Option Exercise	−2.56K		—	2.56K
Restricted Share Unit Direct	Class A Ordinary Share3.93K shares	9/1/2026	M · Option Exercise	−3.93K		—	0.00