United States Securities and Exchange Commission Form 12b-25 SEC File No.: 001-15511 CUSIP No.: 693677106 NOTIFICATION OF LATE FILING (Check One): [X] Form 10-K and Form 10-KSB; [ ] Form 20-F; [ ] Form 11-K; [ ] Form 10-Q and Form 10-QSB; [ ] Form N-SAR For Period Ended: August 31, 2004 _ 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: ___________________________ 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 PYR Energy Corporation ---------------------------------------------------------------------- Full Name of Registrant Mar Ventures Inc. ---------------------------------------------------------------------- Former Name if Applicable 1675 Broadway, Suite 2450 Denver, CO 80202 ---------------------------------------------------------------------- Address of Principal Executive Office (Street and Number) 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 reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense; |X| (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 fifteenth 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 5th calendar day after 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 the reasons why Forms 10-K, 20-F, 10-Q, N-SAR, or the transition report or portion thereof, could not be filed within the prescribed time period. Because the Registrant has been involved in a number of other matters and projects, the Registrant requires additional time to complete the Form 10-KSB and therefore, the Registrant's Annual Report on Form 10-KSB regarding the fiscal year ended August 31, 2004 could not be timely filed without unreasonable effort or expense. PART IV - OTHER INFORMATION (1) Name and telephone number of person to contact in regard to this notification. D. Scott Singdahlsen (303) 825-3748 ----------------------------------------------------------- (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 reports(s) been filed? If answer is no, identity 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? [X] Yes [ ] 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. As a result of the acquisition of producing properties during the fiscal year ended August 31, 2004, the Registrant anticipates that the resulting production revenue will constitute a significant change in the results of operations from the corresponding period for the last fiscal year. For the reasons set forth in Part III above, a reasonable estimate of the results cannot be made at this time. ---------------------------------------------------------------------- PYR ENERGY CORPORATION ---------------------- Name of Registrant as Specified in Charter has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized. Date: November 30, 2004 By: /s/ D. Scott Singdahlsen ------------------------------------- D. Scott Singdahlsen President and Chief Executive Officer