SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Amendment No. 4) Under the Securities Exchange Act of 1934 VISTA GOLD CORP. (Name of Issuer) Common Shares (Title of Class of Securities) 927926 20 4 (CUSIP Number) Keith Presnell Global Resource Investments Ltd. 7770 El Camino Real Carlsbad, California 92009 Tel.: 760-943-3939 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) December 12, 2002 (Date of Event which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. NOT APPLICABLE CUSIP No. 927926 20 4 Page 2 of 5 SCHEDULE 13D ________________________________________________________________________________ 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON Arthur Richards Rule Not Applicable ________________________________________________________________________________ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| ________________________________________________________________________________ 3 SEC USE ONLY ________________________________________________________________________________ 4 SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) |_| ________________________________________________________________________________ 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. ________________________________________________________________________________ 7 SOLE VOTING POWER 0 _________________________________________________________________ NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 2,577,684 OWNED BY _________________________________________________________________ EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON 0 WITH _________________________________________________________________ 10 SHARED DISPOSITIVE POWER 2,577,684 ________________________________________________________________________________ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,577,684 ________________________________________________________________________________ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_| ________________________________________________________________________________ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.6% ________________________________________________________________________________ 14 TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 927926 20 4 Page 3 of 5 SCHEDULE 13D ________________________________________________________________________________ 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON Rule Family Trust udt 12/17/98 Not Applicable ________________________________________________________________________________ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| ________________________________________________________________________________ 3 SEC USE ONLY ________________________________________________________________________________ 4 SOURCE OF FUNDS* Not Applicable ________________________________________________________________________________ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) |_| ________________________________________________________________________________ 6 CITIZENSHIP OR PLACE OF ORGANIZATION California ________________________________________________________________________________ 7 SOLE VOTING POWER 0 _________________________________________________________________ NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 2,577,684 OWNED BY _________________________________________________________________ EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON 0 WITH _________________________________________________________________ 10 SHARED DISPOSITIVE POWER 2,577,684 ________________________________________________________________________________ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,577,684 ________________________________________________________________________________ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_| ________________________________________________________________________________ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.6% ________________________________________________________________________________ 14 TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 927926 20 4 Page 4 of 5 SCHEDULE 13D (Amendment No. 4) The Statement on Schedule 13D, dated February 8, 2002, initially filed by Arthur Richards Rule, as amended by Amendment No. 1, dated May 2, 2002, Amendment No. 2, dated July 2, 2002, and Amendment No. 3, dated November 13, 2002, each filed by Mr. Rule and the Rule Family Trust udt 12/17/98, a revocable grantor trust (the "Trust," and together with Mr. Rule, the "Reporting Persons") (as so amended, the "Schedule 13D") is hereby amended by this Amendment No. 4, dated December 16, 2002 (the "Amendment"), to reflect certain changes in the information previously filed by the Reporting Persons relating to the outstanding Common Shares of Vista Gold Corp. (the "Issuer"). Unless otherwise specified, all capitalized terms contained herein have the meanings assigned to them in the Schedule 13D. NOTE: Beneficial ownership calculations below are based on 9,967,082 Common Shares of the Issuer outstanding as of December 13, 2002. Item 5. Interest in Securities of the Issuer Item 5(a) and (c) are hereby amended and restated to read in their entirety as follows: (a) Exploration Capital is the direct beneficial owner of 2,052,814 Shares (including 1,122,807 immediately exercisable purchase warrants), representing approximately 18.5% of the Issuer's outstanding Common Shares. By virtue of the relationships described under Item 2 of the Schedule 13D, each of Mr. Rule and the Trust may be deemed to share indirect ownership of the Shares directly beneficially owned by Exploration Capital. Global Resource is the direct beneficial owner of 296,296 Shares (all of which are immediately exercisable share purchase warrants). Rule Investments, the General Partner of Global Resource, is the direct beneficial owner of 228,574 Common Shares. By virtue of the relationships described under Item 2 of the Schedule 13D, each of Mr. Rule and the Trust may be deemed to share indirect ownership of the Shares directly beneficially owned by Global Resource and by Rule Investments. Based on the above, each of Mr. Rule and the Trust has, in aggregate, indirect beneficial ownership of 2,577,684 Shares, or approximately 22.6% of the Issuer's outstanding Common Shares. (c) The Reporting Persons do not directly beneficially own any Shares. Since the filing of Amendment No. 3 to the Schedule 13D, the following transactions have occurred with respect to the Shares indirectly beneficially owned by the Reporting Persons: Exploration Capital sold Common Shares, all in open market transactions, as follows: December 12, 2002 - 50,000 shares at $3.5147 per share, for aggregate proceeds of approximately $175,735. December 12, 2002 - 50,000 shares at $3.6061 per share, for aggregate proceeds of approximately $180,305. On December 12, 2002, Rule Investments made a gift of 20,000 Common Shares to a person unaffiliated with either of the Reporting Persons. CUSIP No. 927926 20 4 Page 5 of 5 SIGNATURES After reasonable inquiry and to the best of his or its knowledge and belief, each of the undersigned certifies that the information set forth in this Statement is true, complete and correct. Date: December 16, 2002 Arthur Richards Rule, individually By: /s/ Keith Presnell -------------------------------------------- Keith Presnell, Attorney-in-Fact Date: December 16, 2002 Rule Family Trust udt 12/17/98 By: /s/ Keith Presnell -------------------------------------------- Keith Presnell, Attorney-in-Fact for Arthur Richards Rule, Trustee