Sionna Therapeutics, Inc. (SION) Ownership - Who Owns Sionna Therapeutics, Inc.?

26 Followers

Recent Insider Trading Activity

Date	Name	Activity	Value
Feb 04, 2026	Peter A. Thompson	xxxxxxxxxxxxx	$1379866
Feb 04, 2026	Orbimed Advisors Llc	xxxxxxxxxxxxx	$1379866
Jan 26, 2026	Tpg Gp A, Llc	xxxxxxxxxxxxx	$10000000
Dec 29, 2025	Peter A. Thompson	xxxxxxxxxxxxx	$1486010

Show More Insider Trading Activity >

Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value
Dec 31, 2025	Ra Capital Management	xxxxxxxxxxxxx	$407493551

Show More Hedge Fund Trading Activity >

Top Shareholders

Holder	# of Shares	Type	% Holding	Value
Peter Kolchinsky	9,905,045	Institution	22.01%	360,444,588
	6,494,962	Insider	14.43%	236,351,667
	3,530,702	Insider	7.85%	128,482,246
	3,530,702	Insider	7.85%	128,482,246
Andreas Halvorsen	3,195,181	Institution	7.10%	116,272,637
	2,995,602	Insider	6.66%	109,009,957
Joseph Edelman	1,179,098	Institution	2.62%	42,907,376
	1,133,415	Institution	2.52%	41,244,972
James E. Flynn	970,590	Institution	2.16%	35,319,770
	949,532	Institution	2.11%	34,553,469

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
949,532	Institution	2.11%	34,553,469
661,753	Institution	1.47%	24,081,192
641,765	Institution	1.43%	23,353,828
633,011	Institution	1.41%	23,035,270
553,942	Institution	1.23%	20,157,949
187,954	Institution	0.42%	6,839,646
147,411	Institution	0.33%	5,364,286
137,637	Institution	0.31%	5,008,610
109,470	Institution	0.24%	3,983,613
84,606	Institution	0.19%	3,078,812

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard Total Stock Market ETF	842,941	Institution	1.87%	30,801,064
SPDR S&P BIOTECH ETF	422,989	Institution	0.94%	15,011,880
iShares Russell 2000 ETF	397,937	Institution	0.88%	14,480,927
iShares Biotechnology ETF	177,660	Institution	0.39%	6,465,047
Vanguard Extended Market ETF	157,080	Institution	0.35%	5,739,703
iShares Russell 2000 Growth ETF	133,678	Institution	0.30%	4,864,542
Vanguard Russell 2000 ETF	79,578	Institution	0.18%	2,907,780
Schwab U.S. Small-Cap ETF	68,315	Institution	0.15%	2,424,499
iShares Micro-Cap ETF	42,012	Institution	0.09%	1,528,817
ALPS Medical Breakthroughs ETF	38,806	Institution	0.09%	1,412,150

FAQ

Who Owns Sionna Therapeutics, Inc. (SION)?

Currently, no data Available

What percentage of Sionna Therapeutics, Inc. (SION) stock is held by institutional investors?

Currently, no data Available

What percentage of Sionna Therapeutics, Inc. (SION) stock is held by retail investors?

Currently, no data Available

Who owns the most shares of Sionna Therapeutics, Inc. (SION)?

Peter Kolchinsky owns the most shares of Sionna Therapeutics, Inc. (SION).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.