MAREX GROUP PLC

Ticker: MRX CUSIP: G5S37H101 Class: Common Stock

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q4 2025

Shares 418,745 Value ($000) $16,063 Avg Close $33.95 Range $27.79 - $40.39

Q2 2025

Shares 83,759 Value ($000) $3,306 Avg Close $41.19 Range $32.61 - $48.76

Q1 2025

Shares 174,196 Value ($000) $6,153 Avg Close $34.28 Range $29.91 - $39.41

Q4 2024

Shares 223,614 Value ($000) $6,970 Avg Close $27.46 Range $22.62 - $31.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	418,745	$16,063	$33.95	$27.79 - $40.39
Q2 2025	83,759	$3,306	$41.19	$32.61 - $48.76
Q1 2025	174,196	$6,153	$34.28	$29.91 - $39.41
Q4 2024	223,614	$6,970	$27.46	$22.62 - $31.93