On March 25, 2010, KB Financial Group Inc. (“KB Financial Group”) announced the following resignation of one of its non-executive directors.

Key Details:

• Details of the resigning non-executive director:

     1) Name: Dam Cho

     2) Stated term: From September 29, 2008 to the date of the annual general meeting of
         shareholders in 2011

• Reason for resignation: In an effort to implement the recently established “Model Rules for
   Non-Executive Directors of Banks” and to meet the expectations of various related parties,
   the board of directors of KB Financial Group requested Mr. Cho to resign his position
   as a non-executive director and Mr. Cho agreed to resign.

• Resignation date: March 25, 2010

• Details of the board of directors of KB Financial Group following the resignation:

     1) Number of directors: 9

     2) Number of non-executive directors: 7