Sign in

CIK 0002036042 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company

Sionna Therapeutics, Inc.

Sign in to watch
Ticker
SION
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
Phone
617-819-2020
Business address
21 HICKORY DRIVE, SUITE 500, WALTHAM, MA, 02451
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$21,835,018
in 1 filing

Net −$21,835,018. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. RA CAPITAL MANAGEMENT, L.P. −$21.8M Director sold 50% of stake
Date Insider Transaction Shares Price Value Owned after
2026-09-17 RA CAPITAL MANAGEMENT, L.P. Director Sale −3,415,011 $6.32 $21.6M 3,482,612
2026-09-17 RA CAPITAL MANAGEMENT, L.P. Director Sale −33,800 $7.46 $252K 3,448,812
2026-09-17 Fitzpatrick Jennifer CLO and Head of Program Mgmt. Grant or award +28,133 28,133
2026-09-17 Fitzpatrick Jennifer CLO and Head of Program Mgmt. Grant or award +28,132 56,265
2026-09-17 Fitzpatrick Jennifer CLO and Head of Program Mgmt. Grant or award · Non-Qualified Stock Option (right to buy) +103,140 103,140
2026-09-17 Fitzpatrick Jennifer CLO and Head of Program Mgmt. Returned to the company · Non-Qualified Stock Option (right to buy) −103,140 0
2026-09-17 McKee Charlotte CMO and Head of R&D Grant or award +50,000 78,415
2026-09-17 McKee Charlotte CMO and Head of R&D Grant or award +50,000 128,415
2026-09-17 McKee Charlotte CMO and Head of R&D Grant or award · Non-Qualified Stock Option (right to buy) +155,700 155,700
2026-09-17 McKee Charlotte CMO and Head of R&D Returned to the company · Non-Qualified Stock Option (right to buy) −155,700 0
2026-09-17 Ridloff Elena CFO and CBO Grant or award +47,269 85,801
2026-09-17 Ridloff Elena CFO and CBO Grant or award +47,268 133,069
2026-09-17 Ridloff Elena CFO and CBO Grant or award · Non-Qualified Stock Option (right to buy) +165,440 165,440
2026-09-17 Ridloff Elena CFO and CBO Returned to the company · Non-Qualified Stock Option (right to buy) −165,440 0
2026-09-17 Cloonan Michael President & CEO Grant or award +109,025 656,368
2026-09-17 Cloonan Michael President & CEO Grant or award +109,025 765,393
2026-09-17 Cloonan Michael President & CEO Grant or award · Non-Qualified Stock Option (right to buy) +436,100 436,100
2026-09-17 Cloonan Michael President & CEO Returned to the company · Non-Qualified Stock Option (right to buy) −436,100 0
2026-07-07 Thompson Peter A. Director Sale 10b5-1 −85,918 $44.86 $3.9M 2,469,959
2026-07-07 ORBIMED ADVISORS LLC Director Sale 10b5-1 −85,918 $44.86 $3.9M 2,469,959

Page 1 of 15 · 284 trades