MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

THORNBURG INVESTMENT MANAGEMENT INC's Holding History (CIK: 0001145020)

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

Q1 2015

Shares 647,428 Value ($000) $12,495 Avg Close $19.99 Range $16.00 - $22.79

Q4 2014

Shares 718,260 Value ($000) $16,240 Avg Close $24.73 Range $18.14 - $30.70

Q3 2014

Shares 947,707 Value ($000) $29,019 Avg Close $29.73 Range $26.38 - $32.10

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	647,428	$12,495	$19.99	$16.00 - $22.79
Q4 2014	718,260	$16,240	$24.73	$18.14 - $30.70
Q3 2014	947,707	$29,019	$29.73	$26.38 - $32.10