InsiderClue
Stocks · Health care · Pharmaceutical Preparations

Sionna Therapeutics, Inc.

SION Clue Score29
United States Fiscal year ends December CIK 0002036042 Results filed 6 Aug 2026
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What the insiders did No buying or selling

By person

10 insiders · 0 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Tpg Gp A, LLC entity
10% owner
—
—
—
6,494,962
$48.45M
+849.0%
Atlas Venture Fund XI, L.P. entity
10% owner
—
—
—
3,694,020
$27.56M
—
Peter A. Thompson
Director
—
—
—
2,469,959
$18.43M
—
Orbimed Advisors LLC entity
Director
—
—
—
2,469,959
$18.43M
—
Michael Cloonan
President & CEO
—
—
—
765,393
$5.71M
+39.8%
Bruce Booth
Director
—
—
—
686,567
$5.12M
—
Ra Capital Management, L.p. entity
Director
—
—
—
318,066
$2.37M
—
Elena Ridloff
CFO and CBO
—
—
—
133,069
$992.69K
+7.7%
Charlotte McKee
CMO and Head of R&D
—
—
—
128,415
$957.98K
+351.9%
Jennifer Fitzpatrick
CLO and Head of Program Mgmt.
—
—
—
56,265
$419.74K
—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.