CYTEK BIOSCIENCES INC

Ticker: CTKB CUSIP: 23285D109 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025

Shares 361,677 Value ($000) $1,826 Avg Close $4.64 Range $3.45 - $6.18

Q3 2025

Shares 361,290 Value ($000) $1,254 Avg Close $3.75 Range $3.09 - $4.28

Q2 2025

Shares 144,252 Value ($000) $490 Avg Close $3.33 Range $2.37 - $4.10

Q1 2025

Shares 48,154 Value ($000) $193 Avg Close $5.18 Range $3.90 - $7.30

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	361,677	$1,826	$4.64	$3.45 - $6.18
Q3 2025	361,290	$1,254	$3.75	$3.09 - $4.28
Q2 2025	144,252	$490	$3.33	$2.37 - $4.10
Q1 2025	48,154	$193	$5.18	$3.90 - $7.30