CLOONAN MICHAEL

PrivateCIK: 1704336
Location

CAMBRIDGE, MA

Senior insider sale

President & CEO at SIONNA THERAPEUTICS, INC. — senior position signals high conviction

$5.92M

200K shares

What this filing means

CLOONAN MICHAEL plans to sell 200K shares of SIONNA THERAPEUTICS, INC. valued at approximately $5.92M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderCLOONAN MICHAELCIK 1704336
IssuerSIONNA THERAPEUTICS, INC.CIK 2036042
DirectorOfficer· President & CEO
Since Feb 2025
200K
Shares to sell
$5.92M
Approx. market value
99.80K
Acquired (3 months)
1
Planned
7 completed
Securities Acquired — Last 3 Months1
Sort

Exercise of Stock Options

Cash

10/21/2025
99.80K
Total acquired99.80K
Planned & Completed Dispositions8
Sort

Completed

Completed

Units to sell

10.43K

Market value

$328.5K

10/16/2025
Completed

Units to sell

14.78K

Market value

$459.7K

10/15/2025
Completed

Units to sell

7.79K

Market value

$231.5K

9/29/2025
Completed

Units to sell

17.21K

Market value

$496.3K

9/26/2025
Completed

Units to sell

7.43K

Market value

$185.7K

8/27/2025
Completed

Units to sell

17.57K

Market value

$438.7K

8/26/2025
Completed

Units to sell

25K

Market value

$568.7K

8/20/2025

Planned — Approximate Date

NASDAQPlanned

Units to sell

99.80K

Market value

$3.21M

10/21/2025
Total

Units

200K

Value

$5.92M

CLOONAN MICHAEL — Planned Insider Sale (Form 144) | Finecho