MASTEC INC — Director's Dealing 2011

Mar 30, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASTEC INC (MTZ)
CIK: 0000015615
Period of Report: 2011-03-28

Reporting Person: Csiszar Ernst N (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-28	Common Stock	M	20000	$10.01	Acquired	36793	Direct
2011-03-28	Common Stock	M	20000	$13.68	Acquired	56793	Direct
2011-03-28	Common Stock	S	31000	$20.3602	Disposed	25793	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-03-28	Non-Qualified Stock Option (right to buy)	$10.01	M	20000	Disposed	2015-11-01	Common Stock (20000)	Direct
2011-03-28	Non-Qualified Stock Option (right to buy)	$13.68	M	20000	Disposed	2016-06-01	Common Stock (20000)	Direct

Footnotes

F1: Pursuant to a 10b5-1 Plan.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.90 to $20.68, inclusive. The reporting person undertakes to provide to MasTec, Inc. ("MasTec"), any security holder of MasTec or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

F3: The options vested in substantially equal installments on November 1st of 2006, 2007, and 2008.

F4: The options vested in substantially equal installments on June 1st of 2007, 2008, and 2009.