Busque Philippe — SEC Form 4 filings
SEC reporting owner CIK 1991396. 12 Form 4 filings on record with FilingPulse; latest filed 2026-05-20.
Transaction summary — filings shown
Covers all 12 filings on record, filed 2024-03-08 to 2026-05-20. 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): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 81.
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) | SVP, GLOBAL SALES AND SERVICES | 12 | — | — | 81 |
Form 4 filings — Busque Philippe
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,024 · Tax withholding (F): 263 @ $3.55 · Option exercise (M): 1,473 · Tax withholding (F): 378 @ $3.55 · Option exercise (M): 2,416 · Tax withholding (F): 620 @ $3.55 · +6 more | EDGAR |
| 2026-03-12 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 2,049 · Tax withholding (F): 635 @ $4.23 · Option exercise (M): 2,946 · Tax withholding (F): 912 @ $4.23 · Option exercise (M): 4,833 · Tax withholding (F): 1,496 @ $4.23 · +5 more | EDGAR |
| 2025-11-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,536 · Tax withholding (F): 393 @ $5.53 · Option exercise (M): 2,210 · Tax withholding (F): 565 @ $5.53 · Option exercise (M): 3,625 · Tax withholding (F): 927 @ $5.53 · +3 more | EDGAR |
| 2025-08-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,536 · Tax withholding (F): 599 @ $4.06 · Option exercise (M): 2,210 · Tax withholding (F): 861 @ $4.06 · Option exercise (M): 3,625 · Tax withholding (F): 1,412 @ $4.06 · +3 more | EDGAR |
| 2025-05-21 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,024 · Tax withholding (F): 399 @ $2.69 · Option exercise (M): 1,473 · Tax withholding (F): 574 @ $2.69 · Option exercise (M): 2,416 · Tax withholding (F): 942 @ $2.69 · +3 more | EDGAR |
| 2025-03-12 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 2,049 · Tax withholding (F): 799 @ $4.36 · Option exercise (M): 2,946 · Tax withholding (F): 1,148 @ $4.36 · Option exercise (M): 2,049 (derivative) @ $0 · Option exercise (M): 2,946 (derivative) @ $0 | EDGAR |
| 2025-03-06 | 4 | Cytek Biosciences, Inc. (CTKB) | Grant/award (A): 91,911 (derivative) @ $0 · Grant/award (A): 58,004 (derivative) @ $0 | EDGAR |
| 2024-11-20 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,536 · Tax withholding (F): 599 @ $6.03 · Option exercise (M): 2,210 · Tax withholding (F): 861 @ $6.03 · Option exercise (M): 1,536 (derivative) @ $0 · Option exercise (M): 2,210 (derivative) @ $0 | EDGAR |
| 2024-08-21 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 1,536 · Tax withholding (F): 599 @ $5.53 · Option exercise (M): 2,210 · Tax withholding (F): 861 @ $5.53 · Option exercise (M): 1,536 (derivative) @ $0 · Option exercise (M): 2,210 (derivative) @ $0 | EDGAR |
| 2024-05-22 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 6,659 · Tax withholding (F): 2,594 @ $5.96 · Option exercise (M): 1,473 · Tax withholding (F): 574 @ $5.96 · Option exercise (M): 6,659 (derivative) @ $0 · Option exercise (M): 1,473 (derivative) @ $0 | EDGAR |
| 2024-03-21 | 4 | Cytek Biosciences, Inc. (CTKB) | Option exercise (M): 5,464 · Tax withholding (F): 2,129 @ $6.70 · Option exercise (M): 5,464 (derivative) @ $0 | EDGAR |
| 2024-03-08 | 4 | Cytek Biosciences, Inc. (CTKB) | Grant/award (A): 52,631 (derivative) @ $0 · Grant/award (A): 35,360 (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.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1991396 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →