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Health care
· Pharmaceutical Preparations
SION
Sionna Therapeutics, Inc.
SION
Clue Score
29
United States
Fiscal year ends December
CIK 0002036042
Results filed 6 Aug 2026
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Overview
Financials
Insiders
Summary
By person
Transactions
What the insiders did
Net buying
1 month
12 months
120 months
By person
10 insiders · 168 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Orbimed Advisors LLC
entity
Director
$9.90M
(1)
$55.67M
(20)
scheduled
−$45.77M
2,469,959
5.46%
$18.43M
—
Peter A. Thompson
Director
$9.90M
(1)
$55.67M
(20)
scheduled
−$45.77M
2,469,959
5.46%
$18.43M
—
Ra Capital Management, L.p.
entity
Director
$20.25M
(2)
$43.30M
(46)
−$23.05M
318,066
0.7035%
$2.37M
—
Bruce Booth
Director
$1.08M
(1)
$22.09M
(50)
scheduled
−$21.01M
686,567
1.52%
$5.12M
—
Tpg Gp A, LLC
entity
10% owner
$21.20M
(2)
$10.00M
(1)
+$11.20M
6,494,962
14.37%
$48.45M
+849.0%
Michael Cloonan
President & CEO
—
$6.33M
(12)
scheduled
−$6.33M
765,393
1.69%
$5.71M
+39.8%
Elena Ridloff
CFO and CBO
—
$1.97M
(7)
scheduled
−$1.97M
133,069
0.2943%
$992.69K
+7.7%
Jennifer Fitzpatrick
CLO and Head of Program Mgmt.
—
$1.45M
(4)
scheduled
−$1.45M
56,265
0.1244%
$419.74K
—
Atlas Venture Fund XI, L.P.
entity
10% owner
$1.08M
(1)
—
+$1.08M
3,694,020
8.17%
$27.56M
—
Charlotte McKee
CMO and Head of R&D
—
—
—
128,415
0.2840%
$957.98K
+351.9%