Sionna Therapeutics, Inc.

SIONNASDAQ

$4.85-0.06 (-1.22% today)

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Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Sionna Therapeutics, Inc. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-83.4%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Ra Capital Management, L.P.	21.93%	$436M	3.79%	Not reported
TPG GP A, LLC	14.38%	$286M	5.71%	Not reported
Viking Global Investors LP	7.07%	$141M	0.40%	Not reported
Atlas Venture Life Science Advisors, LLC	6.63%	$132M	14.95%	Not reported
Orbimed Advisors LLC	5.66%	$112M	2.08%	Not reported
Enavate Sciences GP, LLC	5.49%	$109M	31.56%	Not reported
Adage Capital Partners GP, L.L.C.	3.54%	$70.4M	0.10%	Add 966.67%
JPMorgan Chase & Co	3.30%	$64.1M	0.00%	Not reported
BlackRock, Inc.	3.27%	$64.9M	0.00%	Not reported
Jennison Associates LLC	2.60%	$51.6M	0.03%	Reduce 19.23%
Citadel Advisors LLC	2.54%	$50.5M	0.01%	Not reported
Vanguard Capital Management LLC	2.51%	$49.8M	0.00%	Not reported
State Street Corp	2.26%	$44.9M	0.00%	Not reported
Perceptive Advisors LLC	2.00%	$39.8M	0.60%	Add 37.45%
Deerfield Management Company, L.P.	1.51%	$30M	0.31%	Reduce 29.85%
Siren, L.L.C.	1.35%	$26.9M	0.54%	Add 103.51%
Eventide Asset Management, LLC	1.05%	$20.9M	0.28%	Reduce 26.42%
Geode Capital Management, LLC	1.01%	$20.1M	0.00%	Not reported
Baker Bros. Advisors LP	0.89%	$17.6M	0.09%	Not reported
Casdin Capital, LLC	0.89%	$17.6M	0.88%	New Not reported
Kalehua Capital Management LLC	0.87%	$17.3M	5.53%	Not reported
Goldman Sachs Group Inc	0.86%	$17.1M	0.00%	Not reported
Driehaus Capital Management LLC	0.85%	$17M	0.10%	Add 402.98%
Aberdeen Group plc	0.63%	$12.5M	0.02%	Reduce 49.64%
FMR LLC	0.62%	$12.2M	0.00%	Not reported
Millennium Management LLC	0.61%	$12.2M	0.00%	Not reported
Vanguard Portfolio Management LLC	0.49%	$9.81M	0.00%	Not reported
Longaeva Partners L.P.	0.43%	$8.64M	0.19%	Add 1446.93%
Artisan Partners Limited Partnership	0.42%	$8.34M	0.01%	New Not reported
Ensign Peak Advisors, Inc	0.41%	$8.12M	0.01%	Reduce 27.81%
Soleus Capital Management, L.P.	0.39%	$7.82M	0.27%	Not reported
Northern Trust Corp	0.34%	$6.8M	0.00%	Not reported
Morgan Stanley	0.33%	$6.64M	0.00%	Not reported
Sofinnova Investments, Inc.	0.32%	$6.35M	0.33%	New Not reported
Qube Research & Technologies Ltd	0.31%	$6.17M	0.01%	Not reported
Alyeska Investment Group, L.P.	0.30%	$5.99M	0.02%	Not reported
GordonMD Global Investments LP	0.30%	$5.98M	2.89%	Not reported
Charles Schwab Investment Management Inc	0.29%	$5.71M	0.00%	Not reported
Sio Capital Management, LLC	0.28%	$5.62M	0.93%	Reduce 56.58%
Ishara Investments LP	0.27%	$1.35M	0.99%	Add 150.00%
Vanguard Fiduciary Trust Co	0.27%	$5.34M	0.00%	Not reported
Artia Global Partners LP	0.27%	$5.27M	0.97%	Not reported
UBS Group AG	0.26%	$5.11M	0.00%	Not reported
First Turn Management, LLC	0.24%	$4.86M	0.52%	New Not reported
Citigroup Inc	0.24%	$4.85M	0.00%	Not reported
D. E. Shaw & Co., Inc.	0.23%	$4.47M	0.00%	Not reported
Rock Springs Capital Management LP	0.22%	$4.37M	0.21%	Not reported
Walleye Capital LLC	0.22%	$4.28M	0.02%	Not reported
Rhenman & Partners Asset Management AB	0.22%	$4.27M	0.40%	Add 10.97%
Bank of America Corp	0.20%	$3.91M	0.00%	Not reported

50 of 136 holders

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