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Stock Trading History of Disibio Ralph R

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Disibio Ralph R since year 2005. The trader's CIK number is 1206948. At the time of this reporting, Disibio Ralph R is the Director of Quanta Services Inc . (stock ticker symbol PWR). See this page for all insider trading activities at Quanta Services Inc .

Stock purchases, sales, and option exercises reported by insider *Disibio Ralph R* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-16	PWR	Quanta Services Inc	Sale	1,000	30.40	30,400
2007-11-13	PWR	Quanta Services Inc	Purchase	1,000	27.31	27,305
2007-05-30	PWR	Quanta Services Inc	Sale	2,470	30.37	75,022

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Disibio Ralph R (Director of Quanta Services Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.