Cloonan Michael
SEC insider (Form 3/4/5 filer). CIK 0001704336. President & CEO at Sionna Therapeutics, Inc. (SION) and 1 other issuer. 31 reported Form 4/5 transactions since Sep 2024; latest on Sep 17, 2026. Located in WALTHAM, MA.
Companies Cloonan Michael has filed insider reports for
- Sionna Therapeutics, Inc. (SION): Director, Officer, President & CEO
- bluebird bio, Inc. (BLUE): Director
Cloonan Michael
CIK: 0001704336
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (31 total)
- Sep 17, 2026SION
Sionna Therapeutics, Inc.
DispositionDirectNon-Qualified Stock Option (right to buy)
436.1K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect109K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect109K shares- - Jan 2, 2026SION
Sionna Therapeutics, Inc.
AwardDirectNon-Qualified Stock Option (right to buy)
436.1K shares- - Oct 21, 2025SION
Sionna Therapeutics, Inc.
ExerciseDirect22.9K shares at avg. $6.11$140K - Oct 21, 2025SION
Sionna Therapeutics, Inc.
SaleDirect22.9K shares at avg. $36.60$838K - Oct 21, 2025SION
Sionna Therapeutics, Inc.
SaleDirect13.3K shares at avg. $34.44$459K - Oct 21, 2025SION
Sionna Therapeutics, Inc.
SaleDirect30K shares at avg. $35.63$1.1M - Oct 21, 2025SION
Sionna Therapeutics, Inc.
ExerciseDirect13.3K shares at avg. $6.11$81K - Oct 21, 2025SION
Sionna Therapeutics, Inc.
SaleDirect33.5K shares at avg. $37.31$1.3M
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 17, 2026 |  SION Sionna Therapeutics, Inc. | Disposition Non-Qualified Stock Option (right to buy) | 436,100 | - | - | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Award | 109,025 | - | $0 | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Award | 109,025 | - | $0 | Direct |
| Jan 2, 2026 | SION Sionna Therapeutics, Inc. | Award Non-Qualified Stock Option (right to buy) | 436,100 | - | - | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Exercise | 22,895 | $6.11 | $139,888 | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Sale | 22,895 | $36.60 | $837,957 | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Sale | 13,324 | $34.44 | $458,879 | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Sale | 30,049 | $35.63 | $1,070,646 | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Exercise | 13,324 | $6.11 | $81,410 | Direct |
| Oct 21, 2025 | SION Sionna Therapeutics, Inc. | Sale | 33,532 | $37.31 | $1,251,079 | Direct |
1-10 of 31 transactions