================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. ____)* TDK CORPORATION ------------------- (Name of Issuer) COMMON STOCK ------------------------------ (Title of Class of Securities) 872351408 -------------- (CUSIP Number) OCTOBER 1, 2005 ------------------------------------------------------- (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 the disclosures provided in a prior cover page. The information required in the remainder 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). ================================================================================ ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) Mitsubishi UFJ Financial Group, Inc. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 7,064,041 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 7,064,041 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,064,041 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.3% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 2 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) The Bank of Tokyo-Mitsubishi, Ltd. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 592,514 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 592,514 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 592,514 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.5% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 3 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) Mitsubishi UFJ Trust and Banking Corporation -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 3,639,600 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 3,639,600 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,639,600 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.8% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 4 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) Mitsubishi UFJ Securities Co., Ltd. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 251,169 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 251,169 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 251,169 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 5 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) Mitsubishi UFJ Asset Management Co., Ltd. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 1,623,500 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 1,623,500 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,623,500 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.2% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 6 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) UFJ Bank Limited -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Nagoya City, Aichi, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 82,858 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 82,858 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 82,858 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.1% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 7 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (Entitles only) MU Investments Co., Ltd. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Tokyo, Japan -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 874,400 ------------------------------------------------ BENEFICIALLY 6 SHARED VOTING POWER OWNED BY -0- ------------------------------------------------ EACH 7 SOLE DISPOSITIVE POWER REPORTING 874,400 ------------------------------------------------ PERSON 8 SHARED DISPOSITIVE POWER WITH -0- -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 874,400 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) [_] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.7% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO -------------------------------------------------------------------------------- Page 8 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- ITEM 1 (a) NAME OF ISSUER TDK Corporation (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES 13-1 Nihonbashi 1-chome, Chuo-ku, Tokyo 103-8272, Japan ITEM 2 (a) NAMES OF PERSONS FILING Mitsubishi UFJ Financial Group, Inc. ("MUFG") The Bank of Tokyo-Mitsubishi, Ltd. ("BTM") Mitsubishi UFJ Trust and Banking Corporation ("MUTB") Mitsubishi UFJ Securities Co., Ltd. ("MUS") Mitsubishi UFJ Asset Management Co., Ltd. ("MUAM") UFJ Bank Limited ("UFJ") MU Investments Co., Ltd. ("MUI") (b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE MUFG: 7-1 Marunouchi 2-chome, Chiyoda-ku Tokyo 100-8388, Japan BTM: 7-1 Marunouchi 2-chome, Chiyoda-ku Tokyo 100-8388, Japan MUTB: 4-5 Marunouchi 1-chome, Chiyoda-ku Tokyo 100-8212, Japan MUS: 4-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 100-6317, Japan MUAM: 4-5 Marunouchi 1-chome, Chiyoda-ku Tokyo 100-8212, Japan UFJ: 21-24 Nishiki 3-chome, Naka-ku Nagoya City, Aichi 460-8660, Japan Page 9 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- MUI: 2-15 Nihonbashi Muromachi 3-chome, Chuo-ku Tokyo 103-0022, Japan (c) CITIZENSHIP Not applicable. (d) TITLE OF CLASS OF SECURITIES Common Stock (e) CUSIP NUMBER 872351408 ITEM 3 IF THIS STATEMENT IS FILED PURSUANT TO SECTIONS 240.13d-1(b) OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A: (a) [_] Broker dealer registered under section 15 of the Act (15 U.S.C. 780). (b) [_] Bank as defined in section 3 (a) (6) of the Act (15 U.S.C. 78c). (c) [_] Insurance company as fined in section 3(a) (19) of the Act (15 U.S.C. 78c). (d) [_] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) [_] An investment adviser in accordance with 240.13d-1(b) (1) (ii) (E); (f) [_] An employee benefit plan or endowment fund in accordance with 240.13d-1(b) (1) (ii) (F); (g) [_] A parent holding company or control person in accordance with 240.13d-1(b) (1) (ii) (G); (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i) [_] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); (j) [_] Group, in accordance with 240.13d. Page 10 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. For MUFG (a) Amount Beneficially Owned: 7,064,041 (b) Percent of Class: 5.34% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 7,064,041 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 7,064,041 (iv) Shared power to dispose or to direct the disposition of: -0- For BTM (a) Amount Beneficially Owned: 592,514 (b) Percent of Class: 0.45% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 592,514 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 592,514 (iv) Shared power to dispose or to direct the disposition of: -0- For MUTB (a) Amount Beneficially Owned: 3,639,600 (b) Percent of Class: 2.75% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 3,639,600 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 3,639,600 (iv) Shared power to dispose or to direct the disposition of: -0- Page 11 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- For MUS (a) Amount Beneficially Owned: 251,169 (b) Percent of Class: 0.19% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 251,169 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 251,169 (iv) Shared power to dispose or to direct the disposition of: -0- For MUAM (a) Amount Beneficially Owned: 1,623,500 (b) Percent of Class: 1.23% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 1,623,500 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 1,623,500 (iv) Shared power to dispose or to direct the disposition of: -0- For UFJ (a) Amount Beneficially Owned: 82,858 (b) Percent of Class: 0.06% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 82,858 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 82,858 (iv) Shared power to dispose or to direct the disposition of: -0- For MUI (a) Amount Beneficially Owned: 874,400 (b) Percent of Class: 0.66% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 874,400 (ii) Shared power to vote or to direct the vote: -0- (iii) Sole power to dispose or to direct the disposition of: 874,400 (iv) Shared power to dispose or to direct the disposition of: -0- Page 12 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- ITEM 5 OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS Not applicable. 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 As of the filing date, MUFG beneficially owns 7,064,041 shares indirectly through its subsidiaries as follows: BTM holds 592,514 shares; MUTB holds 3,639,600 shares; MUS holds 251,169 shares; MUAM holds 1,623,500 shares; UFJ holds 82,858 shares; and MUI holds 874,400 shares. 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 the filers cetifiy that, to the best of their 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 particpant in any transaction having that purpose or effect. Page 13 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 MITSUBISHI UFJ FINANCIAL GROUP, INC. By: /s/ Junichi Itoh -------------------------------- Name: Junichi Itoh Title: Executive Officer, General Manager Credit & Investment Management Division Page 14 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 THE BANK OF TOKYO-MITSUBISHI, LTD. By: /s/ Junichi Itoh -------------------------------- Name: Junichi Itoh Title: Managing Director and General Manager Credit Policy Office Page 15 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 MITSUBISHI UFJ TRUST AND BANKING CORPORATION By: /s/ Koji Kawakami ----------------------------------- Name: Koji Kawakami Title: Deputy General Manager of Trust Assets Planning Division Page 16 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 MITSUBISHI UFJ SECURITIES CO., LTD. By: /s/ Shigeyasu Kasamatsu -------------------------------------- Name: Shigeyasu Kasamatsu Title: Senior Executive Officer & General Manager Page 17 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 MITSUBISHI UFJ ASSET MANAGEMENT CO., LTD. By: /s/ Takashi Ikeue --------------------- Name: Takashi Ikeue Title: General Manager of Risk Management Department Page 18 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 UFJ BANK LIMITED By: /s/ Kyoji Hironaka ----------------------------- Name: Kyoji Hironaka Title: General Manager of Treasury Department Page 19 of 20 ----------------------- CUSIP NO. 872351408 ----------------------- 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. Date: October 7, 2005 MU INVESTMENTS CO., LTD. By: /s/ Kenji Fujii ----------------------------- Name: Kenji Fujii Title: General Manager of Risk Management Dept. Page 20 of 20