MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

Quantum Portfolio Management LLC's Holding History (CIK: 0002003672)

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

Q4 2025

Shares 2,935 Value ($000) $638 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 4,801 Value ($000) $1,022 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 2,992 Value ($000) $510 Avg Close $144.03 Range $99.70 - $172.71

Q1 2025

Shares 2,542 Value ($000) $297 Avg Close $134.92 Range $106.45 - $166.95

Q3 2024

Shares 3,721 Value ($000) $458 Avg Close $109.17 Range $89.96 - $127.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,935	$638	$209.86	$182.34 - $233.14
Q3 2025	4,801	$1,022	$183.12	$160.08 - $213.66
Q2 2025	2,992	$510	$144.03	$99.70 - $172.71
Q1 2025	2,542	$297	$134.92	$106.45 - $166.95
Q3 2024	3,721	$458	$109.17	$89.96 - $127.97