16 July 2026Appointed Sekiguchi, Ikuo as Director
16 July 2026Resigned Sudo, Hiroshi as Director
9 April 2025Appointed Sano, Yuki as Director
31 March 2025Resigned Fukumoto, Kenta as Director
22 April 2024Appointed Fukumoto, Kenta as Director
31 March 2024Resigned Kawai, Chihiro as Director
1 April 2023Appointed Ando, Takaaki as Director
23 April 2021Appointed Kawai, Chihiro as Director
31 March 2021Resigned Ishibashi, Yuki as Director
21 April 2020Appointed Ishibashi, Yuki as Director
31 March 2020Resigned Tanioka, Masashi as Director
31 May 2019Resigned Kawashima, Koichi as Director
16 April 2018Appointed Tanioka, Masashi as Director
22 March 2018Resigned Sawaeda, Eisuke as Director
7 July 2017Appointed Sudo, Hiroshi as Director
7 July 2017Resigned Hioki, Hajime as Director
18 April 2017Appointed Sawaeda, Eisuke as Director
21 March 2017Resigned Onso, Koichi as Director
11 July 2016Appointed Onso, Koichi as Director
14 June 2016Resigned Ando, Takaaki as Director
21 July 2015Resigned Akiyama, Katsuo as Director
21 July 2015Appointed Hioki, Hajime as Director
19 June 2015Appointed Kawashima, Koichi as Director
18 June 2015Resigned Kaji, Kengo as Director
11 April 2014Appointed Ando, Takaaki as Director
19 March 2014Resigned Sone, Kentaro as Director
10 April 2013Appointed Sone, Kentaro as Director
27 March 2013Resigned Igarashi, Satoshi as Director
13 April 2012Appointed Igarashi, Satoshi as Director
21 March 2012Resigned Sekiguchi, Ikuo as Director
1 April 2011Appointed Kaji, Kengo as Director
1 April 2011Resigned Toda, Hiroyuki as Director
23 June 2010Resigned Kawahara, Yoshihito as Director
23 June 2010Appointed Akiyama, Katsuo as Director
22 April 2010Appointed Sekiguchi, Ikuo as Director
25 March 2010Resigned Katagiri, Ryoichi as Director
24 June 2009Resigned Akiyama, Katsuo as Director
24 June 2009Appointed Kawahara, Yoshihito as Director
16 April 2009Appointed Katagiri, Ryoichi as Director
25 March 2009Resigned Kawashima, Koichi as Director
10 April 2008Appointed Kawashima, Koichi as Director
27 March 2008Resigned Shin, Hiroki as Director
21 June 2007Resigned Nishida, Toshikazu as Director
21 June 2007Appointed Akiyama, Katsuo as Director
14 June 2007Appointed Toda, Hiroyuki as Director
14 June 2007Resigned Sudo, Hiroshi as Director
15 April 2005Appointed Nishida, Toshikazu as Director
1 April 2005Resigned Ikeda, Kiyoshi as Director
29 March 2005Appointed Shin, Hiroki as Director
13 February 2005Resigned Kajita, Masuo as Director
31 July 2003Resigned Yoshida, Yutaka as Director
17 April 2003Appointed Kajita, Masuo as Director
17 April 2003Appointed Sudo, Hiroshi as Director
1 April 2003Resigned Matsukura, Masahiro as Director
31 March 2003Resigned Kimura, Takaharu as Director
21 June 2002Appointed Kimura, Takaharu as Director
21 June 2002Resigned Funayama, Masakatsu as Director
17 May 2002Appointed Matsukura, Masahiro as Director
2 April 2002Resigned Yoshida, Yutaka as Director
2 April 2002Resigned Kawano, Yoshitaro as Director
2 April 2002Appointed Ikeda, Kiyoshi as Director
2 April 2002Resigned Otanaka, Satoshi as Director
23 April 2001Appointed Yoshida, Yutaka as Director
23 April 2001Appointed Yoshida, Yutaka as Director
1 April 2001Resigned Arai, Kazuhisa as Director
18 May 2000Appointed Otanaka, Satoshi as Director
9 November 1999Resigned Ito, Akira as Director
1 April 1999Appointed Kawano, Yoshitaro as Director
1 April 1999Appointed Arai, Kazuhisa as Director
1 April 1999Resigned Ito, Kazuhiro as Director
26 June 1998Appointed Funayama, Masakatsu as Director
26 June 1998Resigned Munakata, Haruyoshi as Director
26 March 1998Resigned Fujita, Masami as Director
3 June 1996Appointed Fujita, Masami as Director
3 June 1996Resigned Okumaua, Masayoshi as Director
3 June 1996Resigned Matsuoka, Yuji as Director
3 June 1996Resigned Kinoshita, Setsuo as Director
3 June 1996Appointed Ito, Akira as Director
15 June 1995Resigned Watanabe, Nobuo as Director
15 June 1995Appointed Okumaua, Masayoshi as Director
15 June 1995Resigned Kitajima, Hideo as Director
22 March 1995Resigned Ohsawa, Nobuyuki as Director
12 August 1994Appointed Kitajima, Hideo as Director
25 May 1994Appointed Ito, Kazuhiro as Director
25 May 1994Appointed Ohsawa, Nobuyuki as Director
23 March 1994Resigned Kimura, Takaharu as Director
23 March 1994Resigned Miura, Tatewaki as Director
7 July 1993Appointed Matsuoka, Yuji as Director
7 July 1993Resigned Arai, Sadao as Director
7 July 1993Resigned Kubo, Haruhiko as Director
7 July 1993Resigned Yamaguchi, Isamu as Director
7 July 1993Appointed Watanabe, Nobuo as Director
7 July 1993Appointed Kimura, Takaharu as Director
25 March 1993Resigned Sugiyama, Motoki as Director