SEC Form 4 · Updated Daily

KNSA

— KINIKSA PHARMACEUTICALS INTERNATIONAL, PLC Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
BAKER JULIAN	10%+ Owner	2,744,894	2026-05-29	A
BAKER FELIX	10%+ Owner	2,744,894	2026-05-29	A
BAKER BROS. ADVISORS LP	10%+ Owner	2,744,894	2026-05-29	A
Baker Brothers Life Sciences LP	Director	2,744,894	2026-05-29	A
667, L.P.	Director	2,744,894	2026-05-29	A
Baker Bros. Advisors (GP) LLC	10%+ Owner	2,744,894	2026-05-29	A
Patel Sanj K	Director · Officer	92,348	2026-09-01	F
Paolini John F.	Officer	69,922	2026-09-01	F
Megna Michael R	Officer	29,062	2026-09-03	S
Tessari Eben	Officer	23,130	2026-04-07	F
Levy Richard S	Director	22,359	2026-08-01	M
Ragosa Mark	Officer	20,854	2026-09-01	F
Moat Ross	Officer	16,307	2026-09-01	F
Popovits Kimberly J	Director	15,345	2026-05-29	M
Malley Thomas	Director	15,345	2026-05-29	M
McCain Tracey L	Director	15,345	2026-05-29	M
Quart Barry D	Director	12,745	2026-08-19	G
Cole G Bradley	Director	7,172	2026-07-29	G

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-09-03	Megna Michael R	Open-market sale	4,600	$80.30	29,062
2026-09-01	Megna Michael R	Option exercise (derivative)	3,932	$0.00	0
2026-09-01	Megna Michael R	Option exercise (derivative)	2,558	$0.00	2,557
2026-09-01	Megna Michael R	Option exercise (derivative)	2,362	$0.00	4,725
2026-09-01	Megna Michael R	Option exercise (derivative)	2,644	$0.00	7,931
2026-09-01	Megna Michael R	Grant / award (derivative)	14,600	$0.00	14,600
2026-09-01	Megna Michael R	Grant / award (derivative)	3,650	$0.00	3,650
2026-09-01	Megna Michael R	Tax withholding	5,531	$79.28	33,662
2026-09-01	Megna Michael R	Option exercise	2,644	—	39,193
2026-09-01	Megna Michael R	Option exercise	2,362	—	36,549
2026-09-01	Megna Michael R	Option exercise	2,558	—	34,187
2026-09-01	Megna Michael R	Option exercise	3,932	—	31,629
2026-09-01	Moat Ross	Option exercise (derivative)	2,477	$0.00	0
2026-09-01	Moat Ross	Option exercise (derivative)	1,611	$0.00	1,611
2026-09-01	Moat Ross	Option exercise (derivative)	1,740	$0.00	3,481
2026-09-01	Moat Ross	Option exercise (derivative)	2,457	$0.00	7,371
2026-09-01	Moat Ross	Grant / award (derivative)	36,950	$0.00	36,950
2026-09-01	Moat Ross	Grant / award (derivative)	9,250	$0.00	9,250
2026-09-01	Moat Ross	Tax withholding	4,007	$79.28	16,307
2026-09-01	Moat Ross	Option exercise	2,457	—	20,314
2026-09-01	Moat Ross	Option exercise	1,740	—	17,857
2026-09-01	Moat Ross	Option exercise	1,611	—	16,117
2026-09-01	Moat Ross	Option exercise	2,477	—	14,506
2026-09-01	Paolini John F.	Option exercise (derivative)	2,497	$0.00	0
2026-09-01	Paolini John F.	Option exercise (derivative)	1,624	$0.00	1,624
2026-09-01	Paolini John F.	Option exercise (derivative)	1,750	$0.00	3,500
2026-09-01	Paolini John F.	Option exercise (derivative)	2,457	$0.00	7,371
2026-09-01	Paolini John F.	Grant / award (derivative)	26,750	$0.00	26,750
2026-09-01	Paolini John F.	Grant / award (derivative)	6,700	$0.00	6,700
2026-09-01	Paolini John F.	Tax withholding	4,029	$79.28	69,922
2026-09-01	Paolini John F.	Option exercise	2,457	—	73,951
2026-09-01	Paolini John F.	Option exercise	1,750	—	71,494
2026-09-01	Paolini John F.	Option exercise	1,624	—	69,744
2026-09-01	Paolini John F.	Option exercise	2,497	—	68,120
2026-09-01	Patel Sanj K	Option exercise (derivative)	9,991	$0.00	0
2026-09-01	Patel Sanj K	Option exercise (derivative)	6,481	$0.00	6,481
2026-09-01	Patel Sanj K	Option exercise (derivative)	6,237	$0.00	12,475
2026-09-01	Patel Sanj K	Option exercise (derivative)	8,609	$0.00	25,826
2026-09-01	Patel Sanj K	Grant / award (derivative)	120,150	$0.00	120,150
2026-09-01	Patel Sanj K	Grant / award (derivative)	30,050	$0.00	30,050

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.