TZIANABOS ARTHUR
SEC insider (Form 3/4/5 filer). CIK 0001586226. Director at Q32 Bio Inc. (QTTB) and 1 other issuer. 11 reported Form 4/5 transactions since Sep 2024; latest on Jun 12, 2026. Located in WALTHAM, MA.
Companies TZIANABOS ARTHUR has filed insider reports for
- Q32 Bio Inc. (QTTB): Director
- Stoke Therapeutics, Inc. (STOK): Director
TZIANABOS ARTHUR
CIK: 0001586226
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 (11 total)
- Jun 12, 2026QTTB
Q32 Bio Inc.
AwardDirectStock Option (Right to Buy)
10.8K shares- - Jun 12, 2026QTTB
Q32 Bio Inc.
AwardDirectStock Option (Right to Buy)
9.8K shares- - Jun 3, 2026STOK
Stoke Therapeutics, Inc.
AwardDirectDirector Stock Option (Right to Buy)
17.8K shares- - Mar 10, 2026STOK
Stoke Therapeutics, Inc.
ExerciseDirect4K shares at avg. $8.33$33K - Mar 10, 2026STOK
Stoke Therapeutics, Inc.
SaleDirect4.4K shares at avg. $40.00$174K - Oct 23, 2025QTTB
Q32 Bio Inc.
AwardDirectStock Option (Right to Buy)
53.5K shares- - Mar 20, 2025STOK
Stoke Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
122.7K shares- - Feb 24, 2025QTTB
Q32 Bio Inc.
DispositionDirectStock Option (Right to Buy)
25.7K shares- - Feb 24, 2025QTTB
Q32 Bio Inc.
AwardDirectStock Option (Right to Buy)
25.7K shares- - Feb 24, 2025QTTB
Q32 Bio Inc.
DispositionDirectStock Option (Right to Buy)
12.8K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 12, 2026 |  QTTB Q32 Bio Inc. | Award Stock Option (Right to Buy) | 10,826 | - | - | Direct |
| Jun 12, 2026 | QTTB Q32 Bio Inc. | Award Stock Option (Right to Buy) | 9,810 | - | - | Direct |
| Jun 3, 2026 |  STOK Stoke Therapeutics, Inc. | Award Director Stock Option (Right to Buy) | 17,786 | - | - | Direct |
| Mar 10, 2026 | STOK Stoke Therapeutics, Inc. | Exercise | 3,955 | $8.33 | $32,945 | Direct |
| Mar 10, 2026 | STOK Stoke Therapeutics, Inc. | Sale | 4,355 | $40.00 | $174,214 | Direct |
| Oct 23, 2025 | QTTB Q32 Bio Inc. | Award Stock Option (Right to Buy) | 53,521 | - | - | Direct |
| Mar 20, 2025 | STOK Stoke Therapeutics, Inc. | Award Stock Option (Right to Buy) | 122,651 | - | - | Direct |
| Feb 24, 2025 | QTTB Q32 Bio Inc. | Disposition Stock Option (Right to Buy) | 25,674 | - | - | Direct |
| Feb 24, 2025 | QTTB Q32 Bio Inc. | Award Stock Option (Right to Buy) | 25,674 | - | - | Direct |
| Feb 24, 2025 | QTTB Q32 Bio Inc. | Disposition Stock Option (Right to Buy) | 12,767 | - | - | Direct |
1-10 of 11 transactions