Form 4 for CTKB Cytek Biosciences, Inc.
Accepted 2025-08-20 00:00:00 ET · period of report 2025-08-18 · accession 0001415889-25-022516 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-08-20 | 2025-08-18 | CTKB | Chin Richard | Dir | M - OptEx | — | +4,071 | 4,071 | New | — |
| D | 2025-08-20 | 2025-08-18 | CTKB | Chin Richard | Dir | M - OptEx | $0.00 | -4,071 | 69.2K | -6% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-08-18 | M | A | 4,071 | — | 4,071 | D | — | — | (F1) Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock. |
| 2 | Derivative | Restricted Stock Units | 2025-08-18 | M | D | 4,071 | $0.00 | 69,218 | D | — · — to — | 4,071 Common Stock | (F1) Each Restricted Stock Unit (the "RSU Award") represents a contingent right to receive one share of the Issuer's common stock. (F2) 2/36 of the total shares subject to the RSU Award shall vest on August 18, 2025; 3/36 of the total shares subject to the RSU Award shall vest on November 18, 2025 and each November 18 thereafter; 3/36 of the total shares underlying the RSU Award shall vest on March 10, 2026 and each March 10 thereafter; 3/36 of the total shares underlying the RSU Award vesting shall vest on May 18, 2026 and each May 18 thereafter; and 3/36 of the total shares underlying the RSU Award shall vest on August 18, 2026 and each August 18 thereafter, until fully vested. |