X0202 4 2006-11-28 0 0000003982 Allis Chalmers Energy Inc. ALY 0001141105 NEDERLANDER ROBERT E ET AL 1450 BROADWAY, 20TH FLOOR NEW YORK NY 10018 1 0 0 0 Common Stock 2006-11-28 4 A 0 3000 A 177400 D Common Stock 2006-11-29 4 S 0 4000 18.5 D 173400 D Common Stock 523332 I By RER Corp. Common Stock 17862 I By QEN Corp. These shares were issued as a restricted stock award and therefore no consideration was paid by the Reporting Person. The stock award was approved by the Compensation Committee and the Issuer's board of directors on September 12, 2006, subject to stockholder approval of the 2006 Stock Incentive Plan under which the restricted stock was awarded. The Issuer received stockholder approval on November 28, 2006. The stock award vests on September 12, 2007. The Reporting Person owns 100% of the issued and outstanding stock of RER Corp. The Reporting Person owns 80% of the issued and outstanding stock of QEN Corp. Robert E. Nederlander 2006-11-30