X0303 4 2011-02-18 0 0000813779 CRIMSON EXPLORATION INC. CXPO 0001322940 Mengle Jay S C/O CRIMSON EXPLORATION INC. 717 TEXAS AVENUE, SUITE 2900 HOUSTON TX 77002 0 1 0 0 Senior VP - Engineering Common Stock 2011-02-26 4 F 0 3067 4.36 D 206347 D Common Stock 2011-03-09 4 A 0 38000 0 A 244347 D Employee Stock Option (right to buy) 11.6 2011-02-18 4 D 0 45000 D 2016-04-01 Common Stock 45000 0 D Employee Stock Option (right to buy) 5 2011-02-18 4 A 0 45000 A 2021-02-18 Common Stock 45000 45000 D Withholding of stock to satisfy tax withholding obligations. The reporting person was awarded 38,000 shares of restricted stock of the Issuer pursuant to a discretionary long-term equity award. Of these shares of restricted stock, 25% will vest on each of March 9, 2012, 2013, 2014 and 2015 should the reporting person remain an employee of the Issuer on the pertinent vesting date absent earlier vesting pursuant to the terms of the restricted stock award agreement. The option provided for vesting in four equal annual installments beginning April 1, 2006. On February 18, 2011, the Issuer cancelled, pursuant to the Issuer's option exchange program, vested options for 45,000 shares of Issuers common stock granted to the reporting person on April 1, 2005. In exchange, the reporting person received an unvested replacement option for 45,000 shares, having an exercise price of $5.00 per share. The option vests in four equal annual installments beginning February 18, 2012. This Form 4 has been signed by William Austin, Legal Counsel of Crimson Exploration Inc., on behalf of Mr. Mengle, pursuant to an instrument of Power of Attorney, dated March 10, 2011. The authority granted pursuant to such instrument is to remain in effect until rescinded in writing by Mr. Mengle. /s/ William Austin, Legal Counsel 2011-03-11