Sionna Therapeutics (SION.US) Shareholders - Institutional Holders, Major Shareholders & Insiders | Longbridge

Shareholder Type

Institutions45.27%
VC/PE firms42.46%
Hedge funds6.20%
Private companies4.81%
Individuals & Insiders1.26%

Major Shareholders

Major Shareholders Latest
Shareholder
RA Capital Management, L.P.	21.91%	9.91M	0.07%	+0	06/30/2026
TPG Capital, L.P.	14.37%	6.49M	0.04%	+0	06/30/2026
Viking Global Investors LP	7.07%	3.20M	0.02%	+0	06/30/2026
Atlas Venture Advisors, Inc.	6.63%	3.00M	0.02%	+0	06/30/2026
Enavate Sciences	5.48%	2.48M	0.02%	+0	06/30/2026
OrbiMed Advisors LLC	5.46%	2.47M	0.20%	-85.92K	07/07/2026
Qatar Holding LLC	4.47%	2.02M	0.01%	+0	03/31/2026
Adage Capital Management, L.P.	3.54%	1.60M	3.21%	+1.45M	06/30/2026
BlackRock, Inc.	3.26%	1.47M	0.39%	+178.90K	06/30/2026
JP Morgan Asset Management	3.23%	1.46M	0.05%	+26.46K	06/30/2026
Vanguard Capital Management, LLC	2.77%	1.25M	0.24%	+111.77K	06/30/2026
Jennison Associates LLC	2.59%	1.17M	0.63%	-279.09K	06/30/2026
Citadel Advisors LLC	2.54%	1.15M	0.05%	-19.30K	06/30/2026
State Street Investment Management	2.26%	1.02M	0.58%	+265.31K	06/30/2026
Perceptive Advisors LLC	2.00%	905.00K	0.54%	+246.56K	06/30/2026
Deerfield Management Company, L.P.	1.51%	680.92K	0.65%	-289.67K	06/30/2026
Artal Group S.A.	1.35%	610.52K	0.68%	+310.52K	06/30/2026
Michael CloonanPresident, CEO & Director	1.21%	547.34K	<0.01%	+0	04/21/2026
T. Rowe Price Group, Inc.	1.06%	478.02K	0.62%	-278.36K	06/30/2026
Eventide Asset Management, LLC	1.05%	474.98K	0.38%	-170.55K	06/30/2026