Edgar Filing: CRIMSON EXPLORATION INC.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 12b-25

NOTIFICATION OF LATE FILING

(Check one):	o Form 10-K	o Form 20-F	o Form 11-K	x Form 10-Q
	o Form 10-D	o Form N-SAR	o Form N-CSR

For Period Ended March 31, 2007

o	Transition Report on Form 10-K	o	Transition Report on Form 20-F
o	Transition Report on Form 11-K	o	Transition Report on Form 10-Q
o	Transition Report on Form N-SAR

For the Transition Period Ended: ____________________

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I – REGISTRANT INFORMATION

Crimson Exploration Inc.

Full Name of Registrant

717 Texas Avenue, Suite 2900

Address of Principal Executive Office (Street and Number)

Houston, TX 77002

City, State and Zip Code

PART II – RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

(a)

The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense

(b)

The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date: or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and

(c)

The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

PART III – NARRATIVE

Crimson Exploration Inc.’s (“Crimson”) was unable to file its Quarterly Report on Form 10-Q for the period ended March 31, 2007 on a timely basis, as Crimson is continuing to discuss with its outside tax consultants the disclosures in the Form 10-Q relating to Interpretation No.48, Accounting for Uncertainty in Income Taxes-an interpretation of FASB Statement No. 109. Crimson intends to file the Form 10-Q on or before the fifth calendar day following the prescribed due date.

PART IV – OTHER INFORMATION

(1)

Name and telephone number of person to contact in regard to this notification

E. Joseph Grady		(713)		236-7400
(Name)		(Area Code)		(Telephone Number)

(2)

Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s). Yes x No o

(3)

Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? Yes o No x

If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

______________________________________________________________________________________

Crimson Exploration Inc.

(Name of registrant as Specified in Charter)

Has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

Date:	May 15, 2007	By:	/s/ E. Joseph Grady
			E. Joseph Grady
			Senior Vice President and Chief Financial Officer