Cytek Biosciences, Inc. (CTKB) insider trading.
In Q3 2026, insiders at Cytek Biosciences, Inc. reported 25 non-derivative transactions on 7 Forms 3, 4 and 5: 0 open-market purchases and 0 sales.
- Transactions
- 25
- Purchases (P)
- 0
- Sales (S)
- 0
- Net shares, P minus S
- 0
- Insiders
- 6
- Last filed
- 2026-08-20
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Jiang Wenbin | Director, Officer · PRESIDENT AND CEO | 8 | 0 | 0 |
| Yan Ming | Director, Officer · CHIEF TECHNOLOGY OFFICER | 8 | 0 | 0 |
| McCombe William D. | Officer · Chief Financial Officer | 6 | 0 | 0 |
| Muir Glenn P | Director | 1 | 0 | 0 |
| Chin Richard | Director | 1 | 0 | 0 |
| Holder Michael | Director | 1 | 0 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-18 | Muir Glenn P | M (A) | 3,086 | — | 3,086 | Form 4 |
| 2026-08-18 | Chin Richard | M (A) | 6,107 | — | 28,499 | Form 4 |
| 2026-08-18 | Holder Michael | M (A) | 2,181 | — | 62,875 | Form 4 |
| 2026-08-18 | Jiang Wenbin | M (A) | 11,781 | — | 5,488,984 | Form 4 |
| 2026-08-18 | Jiang Wenbin | F (D) | 2,869 | $4.67 | 5,486,115 | Form 4 |
| 2026-08-18 | Jiang Wenbin | M (A) | 22,100 | — | 5,508,215 | Form 4 |
| 2026-08-18 | Jiang Wenbin | F (D) | 5,382 | $4.67 | 5,502,833 | Form 4 |
| 2026-08-18 | Jiang Wenbin | M (A) | 29,002 | — | 5,531,835 | Form 4 |
| 2026-08-18 | Jiang Wenbin | F (D) | 20,956 | $4.67 | 5,561,029 | Form 4 |
| 2026-08-18 | Jiang Wenbin | F (D) | 7,062 | $4.67 | 5,524,773 | Form 4 |
| 2026-08-18 | Jiang Wenbin | M (A) | 57,212 | — | 5,581,985 | Form 4 |
| 2026-08-18 | Yan Ming | M (A) | 7,363 | — | 4,804,051 | Form 4 |
| 2026-08-18 | Yan Ming | F (D) | 1,778 | $4.67 | 4,802,273 | Form 4 |
| 2026-08-18 | Yan Ming | M (A) | 5,525 | — | 4,807,798 | Form 4 |
| 2026-08-18 | Yan Ming | F (D) | 1,346 | $4.67 | 4,806,452 | Form 4 |
| 2026-08-18 | Yan Ming | M (A) | 6,162 | — | 4,812,614 | Form 4 |
| 2026-08-18 | Yan Ming | F (D) | 1,501 | $4.67 | 4,811,113 | Form 4 |
| 2026-08-18 | Yan Ming | M (A) | 14,220 | — | 4,825,333 | Form 4 |
| 2026-08-18 | Yan Ming | F (D) | 3,463 | $4.67 | 4,821,870 | Form 4 |
| 2026-08-18 | McCombe William D. | M (A) | 13,051 | — | 128,437 | Form 4 |
| 2026-08-18 | McCombe William D. | F (D) | 5,401 | $4.67 | 134,693 | Form 4 |
| 2026-08-18 | McCombe William D. | M (A) | 16,049 | — | 140,094 | Form 4 |
| 2026-08-18 | McCombe William D. | F (D) | 4,392 | $4.67 | 124,045 | Form 4 |
| 2026-08-18 | McCombe William D. | M (A) | 6,320 | — | 117,497 | Form 4 |
| 2026-08-18 | McCombe William D. | F (D) | 2,111 | $4.67 | 115,386 | Form 4 |
Transaction codes in this quarter
Get CTKB insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1831915&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · CTKB company page · Cytek Biosciences, Inc. on SEC.gov
Questions
Are insiders buying or selling Cytek Biosciences, Inc. (CTKB)?
In Q3 2026, insiders at Cytek Biosciences, Inc. reported 25 non-derivative transactions on 7 Forms 3, 4 and 5: 0 open-market purchases and 0 sales. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Cytek Biosciences, Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/ctkb.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.