McCombe William D.
SEC insider (Form 3/4/5 filer). CIK 0001878824. Chief Financial Officer at Cytek Biosciences, Inc. (CTKB). 33 reported Form 4/5 transactions since Sep 2024; latest on Aug 18, 2026. Located in FREMONT, CA.
Companies McCombe William D. has filed insider reports for
- Cytek Biosciences, Inc. (CTKB): Officer, Chief Financial Officer
McCombe William D.
CIK: 0001878824
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)
Cytek Biosciences, Inc.
Discretionary Trading P&L
Holdings
Transaction History (33 total)
- Aug 18, 2026CTKB
Cytek Biosciences, Inc.
Tax PaymentDirect4.4K shares at avg. $4.67$21K - Aug 18, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect13.1K shares- - Aug 18, 2026CTKB
Cytek Biosciences, Inc.
Tax PaymentDirect5.4K shares at avg. $4.67$25K - Aug 18, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect16K shares- - Aug 18, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect6.3K shares- - Aug 18, 2026CTKB
Cytek Biosciences, Inc.
Tax PaymentDirect2.1K shares at avg. $4.67$10K - May 18, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect8.7K shares- - May 18, 2026CTKB
Cytek Biosciences, Inc.
ExerciseDirect6.3K shares- - May 18, 2026CTKB
Cytek Biosciences, Inc.
Tax PaymentDirect2.3K shares at avg. $3.55$8K - May 18, 2026CTKB
Cytek Biosciences, Inc.
Tax PaymentDirect3.1K shares at avg. $3.55$11K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Tax Payment | 4,392 | $4.67 | $20,511 | Direct |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 13,051 | - | $0 | Direct |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Tax Payment | 5,401 | $4.67 | $25,223 | Direct |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 16,049 | - | $0 | Direct |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 6,320 | - | $0 | Direct |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | Tax Payment | 2,111 | $4.67 | $9,858 | Direct |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 8,700 | - | $0 | Direct |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | Exercise | 6,320 | - | $0 | Direct |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | Tax Payment | 2,268 | $3.55 | $8,051 | Direct |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | Tax Payment | 3,122 | $3.55 | $11,083 | Direct |
1-10 of 33 transactions