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  • Insider Ownership

Insider Trading & Ownership of Michael Cloonan

Location
Cambridge, MA
Summary
The estimated net worth of Michael Cloonan is at least $20.4M dollars as of 22 Oct 2025. Michael Cloonan is the President & CEO, Director of Sionna Therapeutics, Inc. and owns shares of Sionna Therapeutics, Inc. (SION) stock worth about $20.4M.
Signature
Jennifer Fitzpatrick, Attorney-in-Fact
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Ownership of Michael Cloonan

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
SION Sionna Therapeutics, Inc. President & CEO, Director $20.4M -$6.33M -23.7% 21 Oct 2025
BLUE bluebird bio, Inc. Director $0 02 Jun 2025

Insider Transactions Reported by Michael Cloonan:

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