MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

HighVista Strategies LLC's Holding History (CIK: 0001335325)

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

Q4 2025

Shares 5,027 Value ($000) $1,093 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 6,700 Value ($000) $1,426 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 11,000 Value ($000) $1,875 Avg Close $144.03 Range $99.70 - $172.71

Q1 2025

Shares 16,300 Value ($000) $1,902 Avg Close $134.92 Range $106.45 - $166.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,027	$1,093	$209.86	$182.34 - $233.14
Q3 2025	6,700	$1,426	$183.12	$160.08 - $213.66
Q2 2025	11,000	$1,875	$144.03	$99.70 - $172.71
Q1 2025	16,300	$1,902	$134.92	$106.45 - $166.95