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
Add to watchlist

What the insiders did Net selling

By person

10 insiders · 82 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Orbimed Advisors LLC entity
Director
—
$55.67M (20) scheduled
−$55.67M
2,469,959
5.46%
$18.43M
—
Peter A. Thompson
Director
—
$55.67M (20) scheduled
−$55.67M
2,469,959
5.46%
$18.43M
—
Ra Capital Management, L.p. entity
Director
—
$28.54M (38)
−$28.54M
318,066
0.7035%
$2.37M
—
Tpg Gp A, LLC entity
10% owner
—
$10.00M (1)
−$10.00M
6,494,962
14.37%
$48.45M
+849.0%
Jennifer Fitzpatrick
CLO and Head of Program Mgmt.
—
$1.21M (3) scheduled
−$1.21M
56,265
0.1244%
$419.74K
—
Atlas Venture Fund XI, L.P. entity
10% owner
—
—
—
3,694,020
8.17%
$27.56M
—
Michael Cloonan
President & CEO
—
—
—
765,393
1.69%
$5.71M
+39.8%
Bruce Booth
Director
—
—
—
686,567
1.52%
$5.12M
—
Elena Ridloff
CFO and CBO
—
—
—
133,069
0.2943%
$992.69K
+7.7%
Charlotte McKee
CMO and Head of R&D
—
—
—
128,415
0.2840%
$957.98K
+351.9%