MASTEC INC — Director's Dealing 2007

Dec 10, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASTEC INC (MTZ)
CIK: 0000015615
Period of Report: 2007-12-06

Reporting Person: SHANFELTER AUSTIN J (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-12-06	Common Stock	M	150000	$3.34	Acquired	222349	Direct
2007-12-06	Common Stock	M	25838	$7.74	Acquired	248187	Direct
2007-12-06	Common Stock	M	124162	$7.74	Acquired	372349	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-12-06	Incentive Stock Option (right to buy)	$7.74	M	25838	Disposed	2013-08-14	Common Stock (25838)	Direct
2007-12-06	Non-Qualified Stock Option (right to buy)	$3.34	M	150000	Disposed	2009-08-15	Common Stock (150000)	Direct
2007-12-06	Non-Qualified Stock Option (right to buy)	$7.74	M	124162	Disposed	2013-08-14	Common Stock (124162)	Direct

Footnotes

F1: The option vested in two equal installments of 12,919 shares on August 14, 2005 and 2006.

F2: The option vested in three equal installments of 50,000 shares on June 30, 2003, 2004 and 2005.

F3: The option vested in installments of 49,500, 36,581, and 38,081 shares on August 14th, 2004, 2005 and 2006, respectively.