CTKB · ISSUER CIK 1831915
Cytek Biosciences, Inc.
Between Aug 1, 2026 and Oct 29, 2026, 6 Cytek Biosciences, Inc. insiders reported $0.00 of open-market purchases and $0.00 of sales on SEC Form 4.
↗6 insiders filed
Original Form 4 filings from Aug 1, 2026 to Oct 29, 2026. No open-market sales in the window.
$0.00Insider buying
$0.00Insider selling
$0.00Net open-market
Aug 20, 2026Latest filing
| Ticker | Insider | Type | Owned | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 20, 202616:35 | Aug 18, 2026 | CTKB | PRESIDENT AND CEO, Director | M · Exercise | — | +120,095 | 5,581,985 | +2% | — | ||
| Aug 20, 202616:35 | Aug 18, 2026 | CTKB | PRESIDENT AND CEO, Director | F · Tax | $4.67 | −36,269 | 5,561,029 | -1% | $169K | ||
| Aug 20, 202616:34 | Aug 18, 2026 | CTKB | Chief Financial Officer | M · Exercise | — | +35,420 | 140,094 | +34% | — | ||
| Aug 20, 202616:34 | Aug 18, 2026 | CTKB | Chief Financial Officer | F · Tax | $4.67 | −11,904 | 134,693 | -8% | $56K | ||
| Aug 20, 202616:31 | Aug 18, 2026 | CTKB | Director | M · Exercise | — | +3,086 | 3,086 | New | — | ||
| Aug 20, 202616:28 | Aug 18, 2026 | CTKB | Director | M · Exercise | — | +2,181 | 62,875 | +4% | — | ||
| Aug 20, 202616:27 | Aug 18, 2026 | CTKB | Director | M · Exercise | — | +6,107 | 28,499 | +27% | — | ||
| Aug 20, 202616:22 | Aug 18, 2026 | CTKB | CHIEF TECHNOLOGY OFFICER, Director | M · Exercise | — | +33,270 | 4,825,333 | +1% | — | ||
| Aug 20, 202616:22 | Aug 18, 2026 | CTKB | CHIEF TECHNOLOGY OFFICER, Director | F · Tax | $4.67 | −8,088 | 4,821,870 | -0% | $38K |