MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2020

Shares 8,400 Value ($000) $275 Avg Close $50.87 Range $22.51 - $65.00

Q4 2019

Shares 75,300 Value ($000) $4,831 Avg Close $65.85 Range $59.85 - $73.71

Q3 2019

Shares 81,900 Value ($000) $5,318 Avg Close $58.36 Range $49.23 - $66.61

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	8,400	$275	$50.87	$22.51 - $65.00
Q4 2019	75,300	$4,831	$65.85	$59.85 - $73.71
Q3 2019	81,900	$5,318	$58.36	$49.23 - $66.61