CBIZ INC

Ticker: CBZ CUSIP: 124805102 Class: Common Stock

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

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

Q4 2025

Shares 226 Value ($000) $11 Avg Close $52.58 Range $47.89 - $56.93

Q3 2025

Shares 336 Value ($000) $18 Avg Close $64.50 Range $50.51 - $77.91

Q2 2025

Shares 406 Value ($000) $29 Avg Close $72.34 Range $64.85 - $80.65

Q1 2025

Shares 326 Value ($000) $25 Avg Close $80.43 Range $66.01 - $90.13

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	226	$11	$52.58	$47.89 - $56.93
Q3 2025	336	$18	$64.50	$50.51 - $77.91
Q2 2025	406	$29	$72.34	$64.85 - $80.65
Q1 2025	326	$25	$80.43	$66.01 - $90.13