MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

Atika Capital Management LLC's Holding History (CIK: 0001599731)

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

Q4 2025

Shares 55,998 Value ($000) $12,172 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 39,500 Value ($000) $8,406 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 49,200 Value ($000) $8,385 Avg Close $144.03 Range $99.70 - $172.71

Q4 2024

Shares 52,000 Value ($000) $7,079 Avg Close $134.07 Range $118.86 - $150.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	55,998	$12,172	$209.86	$182.34 - $233.14
Q3 2025	39,500	$8,406	$183.12	$160.08 - $213.66
Q2 2025	49,200	$8,385	$144.03	$99.70 - $172.71
Q4 2024	52,000	$7,079	$134.07	$118.86 - $150.12