CYTEK BIOSCIENCES INC

Ticker: CTKB CUSIP: 23285D109 Class: Common Stock

Boston Partners's Holding History (CIK: 0001386060)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 5,008,309 Value ($000) $25,297 Avg Close $4.64 Range $3.45 - $6.18

Q3 2025

Shares 37,183 Value ($000) $129 Avg Close $3.75 Range $3.09 - $4.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,008,309	$25,297	$4.64	$3.45 - $6.18
Q3 2025	37,183	$129	$3.75	$3.09 - $4.28