Yan Ming — SEC Form 4 filings
SEC reporting owner CIK 1874041. 21 Form 4 filings on record with FilingPulse; latest filed 2026-08-20.
Transaction summary — filings shown
Covers all 21 filings on record, filed 2024-02-22 to 2026-08-20. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 5 legs across 3 filings — 61,900 shares, $400,304 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 122.
- Largest priced transaction: sale of 20,000 shares @ $6.77 ($135,400) in Cytek Biosciences, Inc., filed 2024-03-19.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Cytek Biosciences, Inc. (CTKB) | CHIEF TECHNOLOGY OFFICER, Director | 21 | — | 5 legs · 61,900 sh · $400,304 | 122 |
Form 4 filings — Yan Ming
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 7,363 · Tax withholding (F): 1,778 @ $4.67 · Option exercise (M): 5,525 · Tax withholding (F): 1,346 @ $4.67 · Option exercise (M): 6,162 · Tax withholding (F): 1,501 @ $4.67 · +6 more | EDGAR |
| 2026-06-16 | 4 | Cytek Biosciences, Inc. (CTKB) | Gift (G): 135,892 @ $0 | EDGAR |
| 2026-05-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 4,908 · Tax withholding (F): 1,224 @ $3.55 · Option exercise (M): 3,683 · Tax withholding (F): 919 @ $3.55 · Option exercise (M): 4,108 · Tax withholding (F): 1,025 @ $3.55 · +6 more | EDGAR |
| 2026-03-13 | 4 | Cytek Biosciences, Inc. (CTKB) | Gift (G): 1,176,000 @ $0 | EDGAR |
| 2026-03-12 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 9,817 · Tax withholding (F): 3,047 @ $4.23 · Option exercise (M): 7,366 · Tax withholding (F): 2,287 @ $4.23 · Option exercise (M): 8,217 · Tax withholding (F): 2,397 @ $4.23 · +5 more | EDGAR |
| 2026-02-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,332 · Tax withholding (F): 395 @ $4.20 · Option exercise (M): 1,332 (derivative) @ $0 | EDGAR |
| 2025-11-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 483 @ $5.53 · Option exercise (M): 7,363 · Tax withholding (F): 1,793 @ $5.53 · Option exercise (M): 5,525 · Tax withholding (F): 1,346 @ $5.53 · +6 more | EDGAR |
| 2025-08-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $4.06 · Option exercise (M): 7,363 · Tax withholding (F): 2,184 @ $4.06 · Option exercise (M): 5,525 · Tax withholding (F): 1,498 @ $4.06 · +6 more | EDGAR |
| 2025-05-21 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $2.69 · Option exercise (M): 4,908 · Tax withholding (F): 1,456 @ $2.69 · Option exercise (M): 3,683 · Tax withholding (F): 1,093 @ $2.69 · +6 more | EDGAR |
| 2025-03-12 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 9,817 · Tax withholding (F): 2,911 @ $4.36 · Option exercise (M): 7,366 · Tax withholding (F): 2,185 @ $4.36 · Option exercise (M): 9,817 (derivative) @ $0 · Option exercise (M): 7,366 (derivative) @ $0 | EDGAR |
| 2025-03-06 | 4 | Cytek Biosciences, Inc. (CTKB) | Grant/award (A): 156,250 (derivative) @ $0 · Grant/award (A): 98,607 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $5.31 · Option exercise (M): 1,981 (derivative) @ $0 | EDGAR |
| 2024-11-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 483 @ $6.03 · Option exercise (M): 7,363 · Tax withholding (F): 1,793 @ $6.03 · Option exercise (M): 5,525 · Tax withholding (F): 1,346 @ $6.03 · +3 more | EDGAR |
| 2024-08-21 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $5.53 · Option exercise (M): 7,363 · Tax withholding (F): 1,797 @ $5.53 · Option exercise (M): 5,525 · Tax withholding (F): 1,346 @ $5.53 · +3 more | EDGAR |
| 2024-05-22 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $5.96 · Option exercise (M): 4,908 · Tax withholding (F): 1,456 @ $5.96 · Option exercise (M): 3,683 · Tax withholding (F): 1,093 @ $5.96 · +3 more | EDGAR |
| 2024-04-23 | 4 | Cytek Biosciences, Inc. (CTKB) | Sale (S): 20,000 @ $5.87 | EDGAR |
| 2024-04-11 | 4 | Cytek Biosciences, Inc. (CTKB) | Sale (S): 1,500 @ $7 · Sale (S): 400 @ $7.01 | EDGAR |
| 2024-03-19 | 4 | Cytek Biosciences, Inc. (CTKB) | Sale (S): 20,000 @ $6.77 · Sale (S): 20,000 @ $6.71 | EDGAR |
| 2024-03-13 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 9,817 · Tax withholding (F): 2,911 @ $7.22 · Option exercise (M): 9,817 (derivative) @ $0 | EDGAR |
| 2024-03-08 | 4 | Cytek Biosciences, Inc. (CTKB) | Grant/award (A): 131,578 (derivative) @ $0 · Grant/award (A): 88,401 (derivative) @ $0 | EDGAR |
| 2024-02-22 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,981 · Tax withholding (F): 588 @ $8.38 · Option exercise (M): 1,981 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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