McKee Charlotte
SEC insider (Form 3/4/5 filer). CIK 0002046433. CMO and Head of R&D at Sionna Therapeutics, Inc. (SION). 5 reported Form 4/5 transactions since Sep 2024; latest on Sep 17, 2026. Located in WALTHAM, MA.
Companies McKee Charlotte has filed insider reports for
- Sionna Therapeutics, Inc. (SION): Officer, CMO and Head of R&D
McKee Charlotte
CIK: 0002046433
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Sionna Therapeutics, Inc.
Discretionary Trading P&L
Holdings
Transaction History (5 total)
- Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect50K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect50K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
DispositionDirectNon-Qualified Stock Option (right to buy)
155.7K shares- - Jan 2, 2026SION
Sionna Therapeutics, Inc.
AwardDirectNon-Qualified Stock Option (right to buy)
155.7K shares- - Feb 6, 2025SION
Sionna Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
148.5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Award | 50,000 | - | $0 | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Award | 50,000 | - | $0 | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Disposition Non-Qualified Stock Option (right to buy) | 155,700 | - | - | Direct |
| Jan 2, 2026 | SION Sionna Therapeutics, Inc. | Award Non-Qualified Stock Option (right to buy) | 155,700 | - | - | Direct |
| Feb 6, 2025 | SION Sionna Therapeutics, Inc. | Award Stock Option (Right to Buy) | 148,536 | - | - | Direct |
1-5 of 5 transactions