Page 1 of 5 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 Internet Initiative Japan Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) J24210-10-6 ------------------- (CUSIP Number) September 17, 2003 ------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [_] Rule 13d-1(b) [X] Rule 13d-1(c) [_] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the reminder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 2 of 5 CUSIP No. J24210-10-6 -------------------------------------------------------------------------------- 1. Name of Reporting Person I.R.S. Identification No. of above persons (entities only). Sumitomo Corporation -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [_] (b) [_] -------------------------------------------------------------------------------- 3. S.E.C. Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Japan -------------------------------------------------------------------------------- Number of Shares 5. Sole Voting Power 2,107 shares of Common Stock Beneficially Owned 6. Shared Voting Power 0 shares by Each Reporting 7. Sole Dispositive Power 2,107 shares of Common Stock Person With 8. Shared Dispositive Power 0 shares -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 2,107 shares -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares [_] -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 5.5% -------------------------------------------------------------------------------- 12. Type of Reporting Person CO -------------------------------------------------------------------------------- Page 3 of 5 ITEM 1. (a) NAME OF ISSUER Internet Initiative Japan Inc. (the "Company") (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES OR, IF NONE, RESIDENCE Jinbocho Mitsui Bldg. 1-105, Kanda Jinbo-cho Chiyoda-ku, Tokyo 101-0051, Japan ITEM 2. (a) NAME OF PERSON FILING Sumitomo Corporation ("Sumitomo") (b) ADDRESS OF PRINCIPAL BUSINESS OFFICE 1-8-11 Harumi Chuo-ku, Tokyo 104-8610, Japan (c) CITIZENSHIP Japan (d) TITLE OF CLASS OF SECURITIES Common Stock (e) CUSIP NUMBER J24210-10-6 ITEM 3. Not applicable. ITEM 4. OWNERSHIP. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: As of September 17, 2003,Sumitomo beneficially owns 2,107 shares of Common Stock. (b) Percent of class: There being 38,360 shares of Common Stock outstanding (as represented to Sumitomo by the Company on September 17, 2003), Sumitomo beneficially owns approximately 5.5% of the outstanding Common Stock. Page 4 of 5 (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 2,107 shares of Common Stock (ii) Shared power to vote or to direct the vote: 0 shares (iii) Sole power to dispose or to direct the disposition of: 2,107 shares of Common Stock (iv) Shared power to dispose or to direct the disposition of: 0 shares ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [_] ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON Not applicable. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP Not applicable. ITEM 9. NOTICE OF DISSOLUTION OF GROUP Not applicable. ITEM 10. CERTIFICATION By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. Page 5 of 5 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. September 19, 2003 -------------------------------- Date /s/ Shingo Yoshii -------------------------------- Signature Shingo Yoshii, Executive Officer -------------------------------- Name/Title