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

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Shareholder Type

Institutions45.04%
VC/PE firms42.63%
Hedge funds6.23%
Private companies4.83%
Individuals & Insiders1.26%

Major Shareholders

Major Shareholders Latest
Shareholder
RA Capital Management, L.P.	22.28%	10.07M	0.30%	+166.67K	04/21/2026
RA Capital Management, L.P.	21.91%	9.91M	0.07%	+0	06/30/2026
TPG Capital, L.P.	14.79%	6.68M	0.38%	+190.00K	04/21/2026
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
Atlas Venture Advisors, Inc.	6.63%	3.00M	0.02%	+0	06/30/2026
Viking Global Investors LP	6.53%	2.95M	0.56%	-242.43K	04/21/2026
Enavate Sciences	5.48%	2.48M	0.06%	+0	03/31/2026
Enavate Sciences	5.48%	2.48M	0.02%	+0	06/30/2026
OrbiMed Advisors LLC	5.46%	2.47M	2.37%	-1.06M	07/07/2026
OrbiMed Advisors LLC	5.46%	2.47M	0.20%	-85.92K	07/07/2026
Qatar Holding LLC	4.47%	2.02M	0.47%	-189.52K	03/31/2026
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
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
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