FERROGLOBE PLC

Ticker: GSM CUSIP: G33856108 Class: SHS

Mariner, LLC's Holding History (CIK: 0001373442)

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

Q4 2025

Shares 12,330 Value ($000) $57 Avg Close $4.60 Range $3.65 - $5.72

Q3 2025

Shares 11,436 Value ($000) $52 Avg Close $4.25 Range $3.59 - $4.78

Q2 2024

Shares 10,939 Value ($000) $59 Avg Close $5.33 Range $4.64 - $6.05

Q3 2023

Shares 10,859 Value ($000) $56 Avg Close $5.06 Range $4.52 - $5.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12,330	$57	$4.60	$3.65 - $5.72
Q3 2025	11,436	$52	$4.25	$3.59 - $4.78
Q2 2024	10,939	$59	$5.33	$4.64 - $6.05
Q3 2023	10,859	$56	$5.06	$4.52 - $5.65