Ra Capital Management, L.p. bought $1.8M of CTKB

bought $1.78m of CTKB

138,255 shares @ $12.89

Increased holdings by +1.20%

140th largest trade (out of 452)

Large TradeCluster Buy

Trade made by a director

Part of a cluster of 41 transactions by 5 insiders

54% win rate · +7.8% median edge vs SPY (54 trades, 90-day)

Price 34% below 200-day moving average

Win rate excludes trades classified as routine (tax, 10b5-1, exercise, gift).

CTKBCytek Biosciences, Inc.

HealthcareMedical Devices

1D0.00%

1W-1.27%

1M+4.93%

3M+17.88%

6M—

1Y—

Recent insider activity at CTKB