1 October 2025Appointed Moriya, Yukio as Director
30 September 2025Resigned Asano, Takashi as Director
1 April 2025Appointed Asano, Takashi as Director
31 March 2025Resigned Suzuki, Sota as Director
1 July 2024Appointed Igarashi, Takuya as Director
30 June 2024Resigned Kodama, Kenji as Director
28 June 2024Resigned Usui, Rie as Director
1 April 2022Appointed May, Christopher Hitoshi as Director
1 April 2022Appointed Oda, Kazuhisa as Director
1 April 2022Appointed Kodama, Kenji as Director
31 March 2022Resigned Moriya, Yukio, Mr. as Director
31 March 2022Resigned Takeuchi, Shintaro as Director
1 July 2020Appointed Takeuchi, Shintaro as Director
1 July 2020Appointed Suzuki, Sota as Director
30 June 2020Resigned Yuzawa, Tatsuro, Mr. as Director
30 July 2019Appointed Usui, Rie as Director
9 April 2018Appointed Yuzawa, Tatsuro, Mr. as Director
1 March 2018Resigned Kanda, Yasuyuki as Director
1 July 2016Resigned Oba, Akiyoshi, Mr. as Director
1 July 2016Resigned Yuzawa, Tatsuro as Director
1 April 2015Appointed Moriya, Yukio, Mr. as Director
31 March 2015Resigned Takayama, Yuichi as Director
1 July 2013Appointed Kanda, Yasuyuki as Director
30 June 2013Resigned Moriya, Yukio, Mr. as Director
30 June 2013Resigned Kodama, Kenji as Director
1 July 2012Appointed Yuzawa, Tatsuro as Director
1 July 2012Resigned Kasai, Hirofumi as Director
30 June 2010Resigned Miyakawa, Masayoshi as Director
30 June 2010Appointed Moriya, Yukio, Mr. as Director
30 June 2009Appointed Oba, Akiyoshi, Mr. as Director
1 July 2008Appointed Miyakawa, Masayoshi as Director
1 July 2008Resigned Honjo, Kazuhiro as Director
1 July 2008Appointed Kodama, Kenji as Director
1 June 2008Appointed Takayama, Yuichi as Director
13 September 2005Appointed Honjo, Kazuhiro as Director
8 September 2005Resigned Shimizu, Naoki as Director
18 October 2004Resigned Taira, Taketoshi as Director
25 June 2004Resigned Hara, Yoshinori as Director
9 June 2004Appointed Kasai, Hirofumi as Director
16 April 2002Appointed Shimizu, Naoki as Director
23 September 2001Appointed Hara, Yoshinori as Director
1 July 1999Appointed Taira, Taketoshi as Director
26 June 1995Resigned Ohshima, Keisuke as Director
16 August 1993Resigned Nakaaki, Tasaburo as Director