DENISON MINES CORP

Ticker: DNN CUSIP: 248356107 Class: COM

SummitTX Capital, L.P.'s Holding History (CIK: 0002052310)

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

Q4 2025

Shares 937,858 Value ($000) $2,495 Avg Close $2.72 Range $2.20 - $3.42

Q3 2025

Shares 1,874,658 Value ($000) $5,155 Avg Close $2.21 Range $1.67 - $2.95

Q2 2025

Shares 2,074,658 Value ($000) $3,776 Avg Close $1.52 Range $1.08 - $1.90

Q1 2025

Shares 860,000 Value ($000) $1,118 Avg Close $1.67 Range $1.27 - $2.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	937,858	$2,495	$2.72	$2.20 - $3.42
Q3 2025	1,874,658	$5,155	$2.21	$1.67 - $2.95
Q2 2025	2,074,658	$3,776	$1.52	$1.08 - $1.90
Q1 2025	860,000	$1,118	$1.67	$1.27 - $2.19