UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16a OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934 For the Month of May, 2002 ALTAREX CORP. (Exact name of Registrant as specified in its charter) 610 LINCOLN STREET WALTHAM, MA, USA 02451 (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 whether the registrant by furnishing the information contained in this Form 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 ----- ---- AltaRex Corp. (the "Company") is hereby filing its Interim Report to Shareholders for the Three Month Period Ended March 31, 2002. The full text of the Interim Report for the Three Month Period Ended March 31, 2002 is filed 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 Month Period Ended March 31, 2002. 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: /s/ Richard E. Bagley ------------------------------ Name: Richard E. Bagley Title: President and Chief Executive Officer Date: May 29, 2002