X0202 4 2006-05-08 0000003982 Allis Chalmers Energy Inc. ALY 0001254407 TOBOROFF LEONARD 39 N. MOORE STREET, 6B NEW YORK, NY 10013 1 0 0 0 Common Stock 2006-05-08 4 M 0 100000 2.50 A 647333 D Common Stock 2006-05-08 4 M 0 400 13.75 A 647733 D Common Stock 47861 I See note Stock Option 2.50 2006-05-08 4 M 0 100000 0 D 2001-05-31 2011-05-31 Common Stock 100000 0 D Stock Option 13.75 2006-05-08 4 M 0 400 0 D 1999-11-30 2009-11-30 Common Stock 400 0 D Includes 42,860 shares and 5,001 shares held by Leonard Toboroff P.C. Profit Sharing Trust and Lenny Corp. Mr. Toboroff is the sole trustee and beneficiary of Leonard Toboroff P.C. Profit Sharing Trust and the sole shareholder of Lenny Corp. /s/ Leonard H. Toboroff 2006-05-09