X0202 4 2007-05-24 0 0000003982 Allis Chalmers Energy Inc. ALY 0001333195 Sauers Bruce 5075 WESTHEIMER, #890 HOUSTON TX 77056 0 1 0 0 Vice Pres & Corp Controller Common Stock 2007-05-24 4 M 0 16667 10.85 A 19667 D Common Stock 2007-05-24 4 S 0 700 19.65 D 18967 D Common Stock 2007-05-24 4 S 0 4200 19.75 D 14767 D Common Stock 2007-05-24 4 S 0 3600 19.76 D 11167 D Common Stock 2007-05-24 4 S 0 800 19.77 D 10367 D Common Stock 2007-05-24 4 S 0 867 19.79 D 9500 D Common Stock 2007-05-24 4 S 0 1700 19.8 D 7800 D Common Stock 2007-05-24 4 S 0 600 19.81 D 7200 D Stock Option (right to buy) 10.85 2007-05-24 4 M 0 16667 0 D 2015-12-16 Common Stock 16667 8333 D 8,334 options vested on December 16, 2005 and 8,333 options vested on December 15, 2006. /s/ Bruce Sauers 2007-05-24