MASTEC INC — Director's Dealing 2006

May 22, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASTEC INC (MTZ)
CIK: 0000015615
Period of Report: 2006-05-18

Reporting Person: Csiszar Ernst N (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-18	Common Stock	A	4000	—	Acquired	8841	Direct

Footnotes

F1: Represents $50,000 worth of restricted stock based on the closing market price of MasTec's common stock on the New York Stock Exchange on 18 May 2006. The Restricted Stock will vest 33% on the first anniversary of the grant, 33% on the second anniversary of the grant and 34% on the third anniversary of the grant.