MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

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

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

Q4 2025

Shares 13 Value ($000) $3 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 114 Value ($000) $24 Avg Close $183.12 Range $160.08 - $213.66

Q1 2025

Shares 171 Value ($000) $20 Avg Close $134.92 Range $106.45 - $166.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13	$3	$209.86	$182.34 - $233.14
Q3 2025	114	$24	$183.12	$160.08 - $213.66
Q1 2025	171	$20	$134.92	$106.45 - $166.95