MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2025

Shares 53,107 Value ($000) $11,544 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 68,069 Value ($000) $14,486 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 121,075 Value ($000) $20,635 Avg Close $144.03 Range $99.70 - $172.71

Q1 2025

Shares 104,606 Value ($000) $12,209 Avg Close $134.92 Range $106.45 - $166.95

Q4 2024

Shares 104,685 Value ($000) $14,252 Avg Close $134.07 Range $118.86 - $150.12

Q3 2024

Shares 107,607 Value ($000) $13,246 Avg Close $109.17 Range $89.96 - $127.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	53,107	$11,544	$209.86	$182.34 - $233.14
Q3 2025	68,069	$14,486	$183.12	$160.08 - $213.66
Q2 2025	121,075	$20,635	$144.03	$99.70 - $172.71
Q1 2025	104,606	$12,209	$134.92	$106.45 - $166.95
Q4 2024	104,685	$14,252	$134.07	$118.86 - $150.12
Q3 2024	107,607	$13,246	$109.17	$89.96 - $127.97