Stock Trading History of Wilde David

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 Wilde David since year 2005. The trader's CIK number is 1232680. At the time of this reporting, Wilde David is the President & COO of Allis Chalmers Energy Inc. (stock ticker symbol ALY).

Stock purchases, sales, and option exercises reported by *Wilde David* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-12-05	ALY	Allis Chalmers Energy Inc.	Option Exercise	10,000	3.86	38,600
2006-12-05	ALY	Allis Chalmers Energy Inc.	Sale	10,000	22.10	221,000
2002-12-26	ALY	Allis Chalmers Energy Inc.	Purchase	400	1.90	760
2006-11-29	ALY	Allis Chalmers Energy Inc.	Sale	5,400	20.88	112,779
2006-11-29	ALY	Allis Chalmers Energy Inc.	Option Exercise	12,500	3.86	48,250
2006-11-29	ALY	Allis Chalmers Energy Inc.	Sale	12,500	18.92	236,437
2006-11-16	ALY	Allis Chalmers Energy Inc.	Sale	6,900	19.00	131,100
2006-11-16	ALY	Allis Chalmers Energy Inc.	Option Exercise	6,900	3.86	26,634
2006-11-15	ALY	Allis Chalmers Energy Inc.	Option Exercise	600	3.86	2,316
2006-11-15	ALY	Allis Chalmers Energy Inc.	Sale	600	19.00	11,400
2006-11-14	ALY	Allis Chalmers Energy Inc.	Option Exercise	20,000	3.86	77,200
2006-11-14	ALY	Allis Chalmers Energy Inc.	Sale	20,000	18.15	363,000
2006-11-10	ALY	Allis Chalmers Energy Inc.	Option Exercise	8,400	3.30	27,762
2006-11-10	ALY	Allis Chalmers Energy Inc.	Sale	8,400	17.85	149,940
2006-05-12	ALY	Allis Chalmers Energy Inc.	Sale	2,400	15.82	37,968
2006-05-11	ALY	Allis Chalmers Energy Inc.	Sale	51,100	15.86	810,673
2006-05-12	ALY	Allis Chalmers Energy Inc.	Option Exercise	2,400	2.75	6,600
2006-05-11	ALY	Allis Chalmers Energy Inc.	Option Exercise	51,100	2.75	140,525
2006-05-08	ALY	Allis Chalmers Energy Inc.	Sale	28,800	16.03	461,792
2006-05-09	ALY	Allis Chalmers Energy Inc.	Sale	9,400	15.98	150,174
2006-05-08	ALY	Allis Chalmers Energy Inc.	Option Exercise	28,800	2.75	79,200
2006-05-09	ALY	Allis Chalmers Energy Inc.	Option Exercise	9,400	2.75	25,850

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 Wilde David (President & COO of Allis Chalmers Energy Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.