VERTEX INC

Ticker: VERX CUSIP: 92538J106 Class: Common Stock

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q4 2025

Shares 324 Value ($000) $6 Avg Close $21.63 Range $18.54 - $26.54

Q3 2025

Shares 402 Value ($000) $10 Avg Close $28.97 Range $23.13 - $36.75

Q2 2025

Shares 447 Value ($000) $16 Avg Close $38.05 Range $33.22 - $42.44

Q1 2025

Shares 343 Value ($000) $12 Avg Close $45.68 Range $30.26 - $60.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	324	$6	$21.63	$18.54 - $26.54
Q3 2025	402	$10	$28.97	$23.13 - $36.75
Q2 2025	447	$16	$38.05	$33.22 - $42.44
Q1 2025	343	$12	$45.68	$30.26 - $60.71