Sionna Therapeutics, Inc.

Ownership Transactions Reported by 18 Insiders

Symbol
SION on Nasdaq
Location
21 Hickory Drive, Suite 500, Waltham, MA

Insiders trading volume in the past year

Sionna Therapeutics, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Bruce Booth Director $108M -$2.37M -2.14% Sep 29, 2025
Tpg Gp A, Llc 10%+ Owner $107M +$950K +0.9% Jun 27, 2025
Michael Cloonan President & CEO, Director $16.3M -$1.92M -10.6% Sep 26, 2025
Elena Ridloff CFO & Head of Corp. Dev. $966K -$1.97M -67.1% Aug 29, 2025
Jennifer Fitzpatrick Chief Legal Officer $0 -$237K -100% Sep 4, 2025
Atlas Venture Fund XI, L.P. 10%+ Owner Feb 10, 2025
Ra Capital Management, L.P. Director, 10%+ Owner Jun 12, 2025
Lucian Iancovici Director Feb 6, 2025
Paul J. Clancy Director Jun 12, 2025
Laurie Stelzer Director Jun 12, 2025
Charlotte McKee Chief Medical Officer Feb 6, 2025
Marcella K. Ruddy Director Jun 12, 2025
Caroline Stark Beer Chief Business Officer Oct 1, 2025
Orbimed Advisors Llc Director Feb 10, 2025
Harold Edward Fleming Director Jun 12, 2025
Joshua Resnick Director Jun 12, 2025
Joanne L. Viney Director Jun 12, 2025
Peter A. Thompson Director Jun 12, 2025

Recent Insider Transactions by Companies or Individuals for Sionna Therapeutics, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.