MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

OAK RIDGE INVESTMENTS LLC's Holding History (CIK: 0001054554)

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

Q4 2014

Shares 1,368,446 Value ($000) $30,941 Avg Close $24.73 Range $18.14 - $30.70

Q3 2014

Shares 1,526,596 Value ($000) $46,745 Avg Close $29.73 Range $26.38 - $32.10

Q2 2014

Shares 1,545,957 Value ($000) $47,640 Avg Close $37.68 Range $27.96 - $44.80

Q1 2014

Shares 1,537,267 Value ($000) $66,779 Avg Close $37.96 Range $32.27 - $44.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	1,368,446	$30,941	$24.73	$18.14 - $30.70
Q3 2014	1,526,596	$46,745	$29.73	$26.38 - $32.10
Q2 2014	1,545,957	$47,640	$37.68	$27.96 - $44.80
Q1 2014	1,537,267	$66,779	$37.96	$32.27 - $44.03