Ball Jack
SEC insider (Form 3/4/5 filer). CIK 0001873083. Director at Cytek Biosciences, Inc. (CTKB). 4 reported Form 4/5 transactions since Sep 2024; latest on Jun 10, 2026. Located in FREMONT, CA.
Companies Ball Jack has filed insider reports for
- Cytek Biosciences, Inc. (CTKB): Director
Ball Jack
CIK: 0001873083
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)2 (50.0%)
Derivative conversions
Awards (A)2 (50.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
CTKB
Cytek Biosciences, Inc.
Director
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Jun 10, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect44K shares- - Jun 18, 2025CTKB
Cytek Biosciences, Inc.
AwardDirectRestricted Stock Units
44K shares- - Jun 18, 2025CTKB
Cytek Biosciences, Inc.
AwardDirectDirector Stock Option (right to buy)
23.8K shares- - Jun 5, 2025CTKB
Cytek Biosciences, Inc.
ExerciseDirect15.7K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 10, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 43,973 | - | $0 | Direct |
| Jun 18, 2025 | CTKB Cytek Biosciences, Inc. | Award Restricted Stock Units | 43,973 | - | - | Direct |
| Jun 18, 2025 | CTKB Cytek Biosciences, Inc. | Award Director Stock Option (right to buy) | 23,809 | - | - | Direct |
| Jun 5, 2025 | CTKB Cytek Biosciences, Inc. | Exercise | 15,706 | - | - | Direct |
1-4 of 4 transactions