Cloonan Michael bought SION
October 16, 2025 · Form 4 insider transaction
Cloonan Michael bought 10,225 shares of Sionna Therapeutics, Inc. at $6.11 per share, a transaction worth $62.5K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Acquired (buy-side)
Shares
10,225
Price
$6.11
Total value
$62.5K
InsiderCloonan Michael
RoleOfficer, Director
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateOctober 16, 2025
Filing dateOctober 17, 2025
Shares owned after557,568
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
This transaction was automatically executed pursuant to a Rule 10b5-1 trading plan adopted on May 21, 2025.