MAREX GROUP PLC

Ticker: MRX CUSIP: G5S37H101 Class: Common Stock

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q4 2025

Shares 83,206 Value ($000) $3,192 Avg Close $33.95 Range $27.79 - $40.39

Q2 2025

Shares 38,075 Value ($000) $1,503 Avg Close $41.19 Range $32.61 - $48.76

Q1 2025

Shares 84,536 Value ($000) $2,986 Avg Close $34.28 Range $29.91 - $39.41

Q4 2024

Shares 76,435 Value ($000) $2,382 Avg Close $27.46 Range $22.62 - $31.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	83,206	$3,192	$33.95	$27.79 - $40.39
Q2 2025	38,075	$1,503	$41.19	$32.61 - $48.76
Q1 2025	84,536	$2,986	$34.28	$29.91 - $39.41
Q4 2024	76,435	$2,382	$27.46	$22.62 - $31.93