SEC FILE NUMBER 000-29463 CUSIP NUMBER 83568A 10 7 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 Commission File Number 000-19061 NOTIFICATION OF LATE FILING (Check One): [_] Form 10-K [_] Form 11-K [_] Form 20-F [X] Form 10-Q [_] Form 10-D [_] Form N-SAR [_] Form N-CSR For Period Ended: June 30, 2008 [_] Transition Report on Form 10-K [_] Transition Report on Form 20-F [_] Transition Report on Form 11-K [_] Transition Report on Form 10-Q [_] Transition Report on Form N-SAR For the Transition Period Ended: Read attached instruction sheet before preparing form. Please print or type. Nothing in the 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 Sonterra Resources, Inc. - -------------------------------------------------------------------------------- Full Name of Registrant - -------------------------------------------------------------------------------- Former Name if Applicable 300 E. Sonterra Blvd., Suite 1220 - -------------------------------------------------------------------------------- Address of Principal Executive Office (Street and Number) San Antonio, TX 78258 - -------------------------------------------------------------------------------- City, State and Zip Code PART II RULE 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 reasons 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 or Form N-SAR, or portion thereof will be filed on or before the 15th calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, 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 State below in reasonable detail why the Form 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report, or portion thereof, could not be filed within the prescribed time period. (Attach extra sheets if needed.) The Registrant's Form 10-Q for its fiscal quarter ended June 30, 2008 could not be filed within the prescribed time period without unreasonable effort or expense as a result of the recent transition of the management team and the additional time required for the Registrant's new management to prepare, review and complete of the Registrant's financial statements and Form 10-Q. The Registrant continues to dedicate significant resources to the completion of its financial statements and the Form 10-Q, and anticipates filing the Form 10-Q on or before the end of the extended deadline. SEC 1344 (05-06) Persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. PART IV OTHER INFORMATION (1) Name and telephone number of person to contact in regard to this notification Donald J. Sebastian (210) 545-5994 - -------------------------------------------------------------------------------- (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 the answer is no, identify report(s). [X] Yes [_] No (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 [X] No 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. Sonterra Resources, Inc. - -------------------------------------------------------------------------------- (Name of Registrant as Specified in Charter) Has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized. Date August 15, 2008 By /s/ Donald J. Sebastian ------------------- ----------------------------------------- Donald J. Sebastian Chief Financial Officer