Form 6-K

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August, 2007.

Commission File Number 001-33098

Mizuho Financial Group, Inc.

(Translation of registrant’s name into English)

5-5, Otemachi 1-chome

Chiyoda-ku, Tokyo 100-0004

Japan

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of 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 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

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):82-                    .

 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

Date: August 21, 2007

Mizuho Financial Group, Inc.

By:

  

/s/ Satoru Nishibori

Name:

   Satoru Nishibori

Title:

   Managing Director / CFO

To whom it may concern:    August 21, 2007

 

Company Name:    Mizuho Financial Group, Inc.
Representative:    Terunobu Maeda, President & CEO
Head Office:   

5-5 Otemachi 1-chome, Chiyoda-ku,

Tokyo, Japan

Stock Code Number (Japan):   

8411 (Tokyo Stock Exchange (First Section),

Osaka Securities Exchange (First Section))

Announcement regarding Capital Adequacy Ratio (Basel II) as of June 30, 2007

Mizuho Financial Group, Inc. hereby announces Capital Adequacy Ratio (Basel II) as of June 30, 2007, based on “Consolidated Financial Information for the First Quarter of Fiscal 2007” disclosed on July 31, 2007, as shown in the appendix.

 

 

Please direct any inquiries to:

 

Mizuho Financial Group, Inc.    Corporate Communications    81-3-5224-2026

 

Appendix

Capital Adequacy Ratio (Basel II)

Mizuho Financial Group (BIS Capital Ratio)

 

          (%, Billions of yen)     
          As of June 30,
2007		    (Reference)
Change from
March 31, 2007		    

(Reference)

As of March 31,
2007

   
(1)    Consolidated Capital Adequacy Ratio    12.19    (0.29 )   12.48   
   Tier 1 Capital Ratio    6.86    (0.10 )   6.96   
(2)    Tier 1 Capital    4,896.0    (37.5 )   4,933.5   
(3)    Tier 2 Capital    4,131.6    39.0     4,092.6   
(4)    Deductions for Total Risk-based Capital    326.9    142.1     184.7   
(5)    Total Risk-based Capital (2)+(3)-(4)    8,700.7    (140.6 )   8,841.3   
(6)    Risk-weighted Assets    71,365.4    569.9     70,795.4   
(7)    Total Required Capital (6)X8%    5,709.2    45.5     5,663.6   
     Consolidated    Non-consolidated
     As of June 30,
2007		    (Reference)
Change from
March 31, 2007		     (Reference)
As of March 31,
2007		    As of June 30,
2007
Mizuho Bank (Domestic Standard)           
(1)    Capital Adequacy Ratio    12.02    0.28     11.74    12.28
   Tier 1 Capital Ratio    7.15    0.04     7.11    7.33
(2)    Tier 1 Capital    2,047.9    (19.7 )   2,067.7    1,944.1
(3)    Tier 2 Capital    1,458.4    72.8     1,385.6    1,397.0
(4)    Deductions for Total Risk-based Capital    61.0    20.5     40.5    85.0
(5)    Total Risk-based Capital (2)+(3)-(4)    3,445.3    32.5     3,412.8    3,256.0
(6)    Risk-weighted Assets    28,640.3    (413.2 )   29,053.6    26,511.3
(7)    Total Required Capital (6)X8%    2,291.2    (33.0 )   2,324.2    2,120.9
Mizuho Corporate Bank (BIS Capital Ratio)           
(1)    Capital Adequacy Ratio    13.20    (0.81 )   14.01    14.61
   Tier 1 Capital Ratio    8.22    (0.34 )   8.56    8.34
(2)    Tier 1 Capital    3,225.6    (31.2 )   3,256.8    2,997.8
(3)    Tier 2 Capital    2,229.1    (23.0 )   2,252.1    2,422.1
(4)    Deductions for Total Risk-based Capital    278.6    99.1     179.4    166.6
(5)    Total Risk-based Capital (2)+(3)-(4)    5,176.1    (153.3 )   5,329.5    5,253.3
(6)    Risk-weighted Assets    39,208.7    1,184.3     38,024.4    35,938.5
(7)    Total Required Capital (6)X8%    3,136.6    94.7     3,041.9    2,875.0
Mizuho Trust & Banking (BIS Capital Ratio)           
(1)    Capital Adequacy Ratio    17.56    1.87     15.69    17.49
   Tier 1 Capital Ratio    10.14    1.18     8.96    10.04
(2)    Tier 1 Capital    375.3    15.5     359.8    368.3
(3)    Tier 2 Capital    278.2    6.6     271.6    277.0
(4)    Deductions for Total Risk-based Capital    3.6    2.2     1.4    3.9
(5)    Total Risk-based Capital (2)+(3)-(4)    649.9    19.9     630.0    641.4
(6)    Risk-weighted Assets    3,700.9    (314.2 )   4,015.2    3,665.6
(7)    Total Required Capital (6)X8%    296.0    (25.1 )   321.2    293.2
(Reference)

Mizuho Bank (BIS Capital Ratio)

           
(1)    Capital Adequacy Ratio    12.07    0.15     11.92    12.00
   Tier 1 Capital Ratio    6.83    (0.02 )   6.85    6.83
(2)    Tier 1 Capital    2,047.9    (19.7 )   2,067.7    1,944.2
(3)    Tier 2 Capital    1,633.1    62.3     1,570.7    1,555.0
(4)    Deductions for Total Risk-based Capital    61.1    20.5     40.5    85.1
(5)    Total Risk-based Capital (2)+(3)-(4)    3,619.9    22.0     3,597.9    3,414.1
(6)    Risk-weighted Assets    29,974.9    (186.5 )   30,161.4    28,442.1
(7)    Total Required Capital (6)X8%    2,397.9    (14.9 )   2,412.9    2,275.3