Form 4 Tracker
Philippe Busque

SVP, GLOBAL SALES AND SERVICES · 2 filings · Latest: May 18, 2026

Cytek Biosciences, Inc.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
CTKB
PHILIPPE BUSQUE—Sep 2, 2026
Proposed Sale
$4.6331,666$146.5K—
CTKB
Philippe BusqueSVP, GLOBAL SALES AND SERVICESMay 18, 2026
Option Exercise
—10,464—44,890
CTKB
Philippe BusqueSVP, GLOBAL SALES AND SERVICESMar 10, 2026
Option Exercise
—9,828—37,183