RA Capital Nexus Fund II, L.P. bought $1.8M of CTKB

bought $1.78m of CTKB

138,255 shares @ $12.89

Increased holdings by +1.20%

45th largest trade (out of 122)

Large TradeCluster Buy

Trade made by a director

Part of a cluster of 55 transactions by 10 insiders

Unscheduled trade

13% win rate · -21.4% median edge vs SPY (15 trades, 90-day · small sample)

Price 34% below 200-day moving average

CTKBCytek Biosciences, Inc.

HealthcareMedical Devices

1D0.00%

1W+2.46%

1M+6.00%

3M—

6M—

1Y—

Recent insider activity at CTKB