UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the Month of August, 2003 Commission File Number: 000-29574 ALTAREX CORP. (Exact name of registrant as specified in its charter) 1123 DENTISTRY/PHARMACY BUILDING UNIVERSITY OF ALBERTA EDMONTON, ALBERTA, CANADA T6G 2N8 (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F: Form 20-F X Form 40-F -------- ------- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____ Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X ------- ------ If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-______ On August 28, 2003, AltaRex Corp. (the "Company") mailed to its shareholders its Interim Report to Shareholders for the Three Month Period Ended June 30, 2003. The full text of the Interim Report to Shareholders for the Three and Six Month Periods Ended June 30, 2003 is attached as Exhibit 99.1 to this report on Form 6-K and is incorporated herein by reference. INDEX TO EXHIBITS EXHIBIT NO. DESCRIPTION - ----------- ----------- 99.1 Interim Report to Shareholders for the Three and Six Month Periods Ended June 30, 2003. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. ALTAREX CORP. By: ----------------------------- Name: Antoine Noujaim Title: President & CEO Date: August 29, 2003