12 November 2025Resigned Shinomiya, Daisuke as Director
12 November 2025Appointed Tanaka, Kiyokazu as Director
21 May 2025Appointed Kikuchi, Kentaro as Director
21 May 2025Appointed Koga, Katsumi as Director
21 May 2025Resigned Nakazawa, Naoki as Director
31 March 2025Appointed Iwazawa, Kazufumi as Director
15 May 2024Appointed Shinomiya, Daisuke as Director
15 May 2024Resigned Fukui, Yusuke as Director
9 August 2023Appointed Matsubara Mckenna, Eri as Director
9 August 2023Resigned Komiya, Kenichi as Director
1 April 2021Resigned Narikawa, Junichi as Director
18 November 2020Appointed Nakazawa, Naoki as Director
18 November 2020Resigned Okusawa, Naoki as Director
30 June 2020Appointed Fukui, Yusuke as Director
15 May 2020Resigned Saito, Masanori as Director
1 August 2019Appointed Saito, Masanori as Director
1 April 2019Resigned Kawakami, Yutaka as Director
8 June 2017Resigned Shimizu, Kentaro as Director
8 June 2017Appointed Okusawa, Naoki as Director
19 July 2016Appointed Kawakami, Yutaka as Director
24 June 2015Resigned Harata, Yoshihisa as Director
27 May 2014Appointed Shimizu, Kentaro as Director
27 May 2014Resigned Takase, Kenji as Director
9 July 2013Appointed Harata, Yoshihisa as Director
5 July 2013Appointed Narikawa, Junichi as Director
26 June 2013Resigned Suzuki, Akira as Director
26 June 2013Resigned Ikegaya, Mikio as Director
17 April 2013Appointed Komiya, Kenichi as Director
27 June 2012Appointed Ikegaya, Mikio as Director
28 June 2011Appointed Suzuki, Akira as Director
23 May 2011Appointed Takase, Kenji as Director
23 May 2011Resigned Komiya, Kenichi as Director
20 May 2011Resigned Ara, Kazuhide as Director
25 June 2008Appointed Ara, Kazuhide as Director
1 June 2008Resigned Kobayashi, Yosuke as Director
25 May 2006Resigned Kada, Shinya as Director
25 May 2006Appointed Kobayashi, Yosuke as Director
1 April 2006Appointed Komiya, Kenichi as Director
1 April 2006Resigned Fukuoka, Soichiro as Director
31 January 2006Resigned Tokutake, Akio as Director
27 January 2005Appointed Tokutake, Akio as Director
7 July 2003Appointed Kada, Shinya as Director
17 June 2003Resigned Tamura, Kiichirio as Director
17 June 2003Appointed Fukuoka, Soichiro as Director
31 May 2003Resigned Kume, Takashi as Director
17 April 2002Appointed Kume, Takashi as Director
17 April 2002Resigned Wakita, Shouji as Director
17 April 2002Resigned Seo, Toru as Director
1 June 2001Appointed Tamura, Kiichirio as Director
1 June 2001Resigned Yokosuka, Shunroku as Director
1 June 2001Appointed Wakita, Shouji as Director
1 June 2001Appointed Seo, Toru as Director
1 June 2001Resigned Tokutake, Akio as Director
1 June 2001Resigned Tsukada, Shigeru as Director
1 October 1998Resigned Myojin, Masura as Director
1 October 1998Appointed Tokutake, Akio as Director
1 January 1997Appointed Tsukada, Shigeru as Director
1 January 1997Resigned Sugimura, Kenjiro as Director
14 November 1995Appointed Myojin, Masura as Director
14 November 1995Resigned Yoshizumi, Kenji as Director
19 July 1995Resigned Taguchi, Kenji as Director
19 July 1995Appointed Yokosuka, Shunroku as Director
28 July 1993Resigned Wakita, Shoji as Director
28 July 1993Appointed Sugimura, Kenjiro as Director
16 April 1993Resigned Banjo, Hirod as Director
16 April 1993Appointed Yoshizumi, Kenji as Director
26 June 1991Appointed Taguchi, Kenji as Director
26 June 1991Resigned Kobayashi, Koji as Director
6 August 1990Appointed Wakita, Shoji as Director
21 December 1989Appointed Kobayashi, Koji as Director