MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

SOUTHPORT MANAGEMENT, L.L.C.'s Holding History (CIK: 0001549553)

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

Q4 2019

Shares 15,300 Value ($000) $981,648 Avg Close $65.85 Range $59.85 - $73.71

Q3 2019

Shares 22,500 Value ($000) $1,460,925 Avg Close $58.36 Range $49.23 - $66.61

Q2 2019

Shares 25,000 Value ($000) $1,288,250 Avg Close $49.40 Range $45.52 - $53.80

Q1 2019

Shares 25,000 Value ($000) $1,202,500 Avg Close $44.93 Range $39.30 - $48.77

Q4 2018

Shares 25,000 Value ($000) $1,014 Avg Close $43.06 Range $37.24 - $51.77

Q3 2018

Shares 10,000 Value ($000) $447 Avg Close $46.29 Range $40.20 - $53.45

Q2 2018

Shares 27,000 Value ($000) $1,370 Avg Close $48.31 Range $43.90 - $54.70

Q1 2018

Shares 34,000 Value ($000) $1,600 Avg Close $50.70 Range $44.70 - $55.53

Q4 2017

Shares 32,500 Value ($000) $1,591 Avg Close $44.61 Range $39.83 - $51.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	15,300	$981,648	$65.85	$59.85 - $73.71
Q3 2019	22,500	$1,460,925	$58.36	$49.23 - $66.61
Q2 2019	25,000	$1,288,250	$49.40	$45.52 - $53.80
Q1 2019	25,000	$1,202,500	$44.93	$39.30 - $48.77
Q4 2018	25,000	$1,014	$43.06	$37.24 - $51.77
Q3 2018	10,000	$447	$46.29	$40.20 - $53.45
Q2 2018	27,000	$1,370	$48.31	$43.90 - $54.70
Q1 2018	34,000	$1,600	$50.70	$44.70 - $55.53
Q4 2017	32,500	$1,591	$44.61	$39.83 - $51.20