31 July 2026Resigned Shiimado, Kazuhiko as Director
31 July 2026Appointed Kurozumi, Masao as Director
1 April 2026Resigned Yoshizawa, Hiroshi as Director
1 April 2026Appointed Yamaguchi, Masataka as Director
1 April 2025Resigned Ochiai, Yusuke as Director
1 April 2025Appointed Yuguchi, Kei as Director
3 June 2024Appointed Asano, Hiromi as Secretary
19 April 2024Resigned Chigahara, Kaoru as Secretary
21 July 2023Resigned Yamane, Hideaki as Director
21 July 2023Appointed Ochiai, Yusuke as Director
20 April 2023Resigned Kitagawa, Naoko as Director
20 April 2023Appointed Shiimado, Kazuhiko as Director
7 November 2022Appointed Chigahara, Kaoru as Secretary
7 November 2022Resigned Nakamura, Soichi as Secretary
26 September 2022Appointed Nakamura, Soichi as Secretary
26 September 2022Resigned Okamoto, Kotaro as Secretary
19 May 2022Resigned Fujii, Mikio as Director
19 May 2022Appointed Kitagawa, Naoko as Director
19 May 2022Appointed Okamoto, Kotaro as Secretary
19 May 2022Resigned Ukebe, Koki as Secretary
19 May 2022Appointed Yoshizawa, Hiroshi as Director
19 July 2021Appointed Yamane, Hideaki as Director
24 June 2021Resigned Sato, Masataka as Director
1 April 2021Appointed Fujii, Mikio as Director
26 February 2021Resigned Ikari, Shinobu as Director
14 September 2020Resigned Kasahara, Yoshihiko as Director
26 May 2020Resigned Ochiai, Yusuke as Director
26 May 2020Appointed Nakamura, Soichi as Director
26 May 2020Resigned Kawamoto, Masahide as Director
26 May 2020Appointed Sato, Masataka as Director
1 July 2019Appointed Ikari, Shinobu as Director
1 July 2019Resigned Kada, Shinya as Director
14 June 2019Appointed Ochiai, Yusuke as Director
14 June 2019Appointed Kawamoto, Masahide as Director
14 June 2019Resigned Ban, Yuji as Director
14 June 2019Resigned Maezono, Hiroshi as Director
17 July 2018Appointed Kada, Shinya as Director
6 July 2018Resigned Yamane, Hideaki as Director
20 April 2018Resigned Ohtsubo, Miki as Director
20 April 2018Appointed Ban, Yuji as Director
13 June 2017Appointed Maezono, Hiroshi as Director
5 June 2017Resigned Iizumi, Hiroshi as Director
23 May 2017Appointed Ohtsubo, Miki as Director
15 May 2017Resigned Fujii, Mikio as Director
12 April 2017Appointed Kasahara, Yoshihiko as Director
12 April 2017Resigned Shukuya, Yoichi as Director
10 August 2016Appointed Fujii, Mikio as Director
31 July 2016Resigned Murakami, Masaaki as Director
12 May 2016Appointed Yamane, Hideaki as Director
30 April 2015Appointed Murakami, Masaaki as Director
30 April 2015Resigned Maemura, Yoshimi as Director
12 February 2015Appointed Ukebe, Koki as Secretary
1 November 2013Appointed Shukuya, Yoichi as Director
31 October 2013Resigned Onosaka, Isao as Director
11 April 2013Appointed Maemura, Yoshimi as Director
28 March 2013Resigned Iijima, Masayuki as Director
1 November 2012Resigned Furukawa, Kosuke as Director
18 September 2012Appointed Iizumi, Hiroshi as Director
13 July 2011Resigned Sasaki, Masahiko as Director
13 July 2011Appointed Furukawa, Kosuke as Director
27 May 2011Appointed Sasaki, Masahiko as Director
27 May 2011Resigned Kato, Masaru as Director
25 May 2010Appointed Kato, Masaru as Director
25 May 2010Appointed Iijima, Masayuki as Director
25 May 2010Resigned Kawamoto, Masahide as Director
25 May 2010Resigned Suzuki, Tatsuro as Director
16 April 2010Resigned Ochiai, Yusuke as Director
16 April 2010Appointed Onosaka, Isao as Director
16 June 2009Appointed Kawamoto, Masahide as Director
16 June 2009Appointed Suzuki, Tatsuro as Director
16 June 2009Resigned Sugimoto, Keiji as Director
31 March 2009Resigned Tajima, Hiromi as Director
29 April 2008Appointed Tajima, Hiromi as Director
29 April 2008Resigned Kawaguchi, Masahiko as Director
8 November 2006Appointed Sugimoto, Keiji as Director
8 November 2006Appointed Ochiai, Yusuke as Director
8 November 2006Appointed Kawaguchi, Masahiko as Director
8 November 2006Resigned Matsuo, Naoki as Director
1 September 2006Appointed Matsuo, Naoki as Director