MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

First Dallas Securities Inc.'s Holding History (CIK: 0001378559)

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

Q4 2025

Shares 8,350 Value ($000) $1,815 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 8,150 Value ($000) $1,734 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 8,350 Value ($000) $1,423 Avg Close $144.03 Range $99.70 - $172.71

Q1 2025

Shares 8,850 Value ($000) $1,033 Avg Close $134.92 Range $106.45 - $166.95

Q4 2024

Shares 7,600 Value ($000) $1,035 Avg Close $134.07 Range $118.86 - $150.12

Q3 2024

Shares 3,750 Value ($000) $462 Avg Close $109.17 Range $89.96 - $127.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,350	$1,815	$209.86	$182.34 - $233.14
Q3 2025	8,150	$1,734	$183.12	$160.08 - $213.66
Q2 2025	8,350	$1,423	$144.03	$99.70 - $172.71
Q1 2025	8,850	$1,033	$134.92	$106.45 - $166.95
Q4 2024	7,600	$1,035	$134.07	$118.86 - $150.12
Q3 2024	3,750	$462	$109.17	$89.96 - $127.97