Barnett Valerie (CIK 1873091) reported 46 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-20). Recent activity: Buy CTKB (2,454 shares), Sell CTKB (881 shares), Buy CTKB (5,156 shares), Sell CTKB (1,850 shares), Buy CTKB (7,250 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 2,454 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 881 | $3,128 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 5,156 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 1,850 | $6,568 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 7,250 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 2,602 | $9,237 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 9,435 | $0 |
| 2026-05-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 3,386 | $12,020 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 14,501 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 1,761 | $7,449 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 10,313 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 4,247 | $17,965 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 4,908 | $0 |
| 2026-03-12 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 5,740 | $24,280 |
| 2026-02-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 1,346 | $0 |
| 2026-02-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 525 | $2,205 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 2,016 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 649 | $3,589 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 3,681 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 1,184 | $6,548 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 7,735 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 2,487 | $13,753 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 10,875 | $0 |
| 2025-11-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Sell | 3,497 | $19,338 |
| 2025-08-20 | Cytek Biosciences, Inc. (CTKB) | CHIEF LEGAL OFFICER | Buy | 2,016 | $0 |
Source: SEC Form 4 filings · as of 2026-05-20