1 May 2026Appointed Arakawa, Kasei as Secretary
30 April 2026Resigned Jennings, Nina Victoria as Secretary
1 April 2026Appointed Nakano, Yasuji as Director
31 March 2026Resigned Fuji, Eiichi as Director
1 May 2025Appointed Aoki, Hajimu as Director
30 April 2025Resigned Sakai, Ken as Director
14 April 2025Resigned Hirahara, Kentaro as Director
14 April 2025Resigned Kojima, Toru as Director
1 April 2025Appointed Kaneko, Yoshihisa as Director
1 April 2025Appointed Kuno, Kenta as Director
1 April 2025Appointed Ikedo, Taro as Director
31 March 2025Resigned Tashiro, Yasuhisa as Director
1 April 2024Appointed Sakai, Ken as Director
1 April 2024Appointed Kojima, Toru as Director
31 March 2024Resigned Ikemoto, Koichi as Director
1 April 2023Appointed Ikemoto, Koichi as Director
31 March 2023Resigned Furusawa, Motoi as Director
31 March 2022Resigned Konno, Teruki as Director
1 April 2021Appointed Hirahara, Kentaro as Director
1 April 2021Appointed Furusawa, Motoi as Director
31 March 2021Resigned Nakagawa, Taizo as Director
31 March 2020Appointed Fuji, Eiichi as Director
31 March 2020Appointed Tashiro, Yasuhisa as Director
31 March 2020Resigned Tomikawa, Kiyoshi as Director
31 March 2020Resigned Kawai, Masaaki as Director
11 October 2018Appointed Konno, Teruki as Director
12 July 2018Resigned Ohata, Nobuyoshi as Director
24 April 2018Appointed Ohata, Nobuyoshi as Director
24 April 2018Appointed Kawai, Masaaki as Director
24 April 2018Resigned Chikahisa, Masashi as Director
24 April 2018Resigned Hatano, Junichi as Director
24 April 2018Resigned Nishio, Fumitaka as Director
24 April 2018Appointed Nakagawa, Taizo as Director
1 April 2017Appointed Tomikawa, Kiyoshi as Director
31 March 2017Resigned Tanimoto, Masakazu as Director
18 April 2016Appointed Tanimoto, Masakazu as Director
18 April 2016Resigned Suzuki, Shuji as Director
18 April 2016Resigned Shimada, Koji as Director
18 April 2016Appointed Hatano, Junichi as Director
26 May 2015Resigned Nagata, Osamu as Director
26 May 2015Appointed Suzuki, Shuji as Director
30 May 2014Resigned Ojima, Hisayoshi as Director
30 May 2014Appointed Nagata, Osamu as Director
23 April 2014Appointed Chikahisa, Masashi as Director
11 April 2014Appointed Ojima, Hisayoshi as Director
11 April 2014Appointed Nishio, Fumitaka as Director
11 April 2014Resigned Tanimoto, Masakazu as Director
11 April 2014Resigned Takao, Atsushi as Director
21 January 2014Resigned Kako, Junya as Director
22 April 2013Appointed Tanimoto, Masakazu as Director
22 April 2013Resigned Kaneda, Tomohito as Director
1 October 2012Appointed Kako, Junya as Director
3 April 2012Resigned Ishitani, Makoto as Director
3 April 2012Appointed Shimada, Koji as Director
3 April 2012Resigned Fujita, Eiji as Director
3 April 2012Appointed Takao, Atsushi as Director
12 April 2010Appointed Fujita, Eiji as Director
1 April 2010Appointed Kaneda, Tomohito as Director
1 April 2009Appointed Ishitani, Makoto as Director
1 April 2009Resigned Chiba, Susumu as Director
1 April 2007Resigned Furutate, Shigeki as Director
30 March 2007Appointed Chiba, Susumu as Director
30 March 2007Resigned Yokokawa, Masahiro as Director
26 October 2006Resigned Yamamoto, Masahiro as Director
24 April 2006Appointed Yamamoto, Masahiro as Director
29 April 2005Appointed Furutate, Shigeki as Director
28 July 2004Resigned Sone, Hiraku as Director
29 April 2004Resigned Ushino, Kenichiro as Director
1 January 2003Resigned Fukunaga, Yoshifumi as Director
1 January 2003Appointed Yokokawa, Masahiro as Director
1 January 2003Appointed Ushino, Kenichiro as Director
18 December 2001Resigned Yoneda, Junzo as Director
18 December 2001Appointed Fukunaga, Yoshifumi as Director
18 December 2001Appointed Sone, Hiraku as Director
18 December 2001Resigned Idehara, Hisashi as Director
22 January 2001Appointed Jennings, Nina Victoria as Secretary
1 November 1999Appointed Yoneda, Junzo as Director
1 January 1999Appointed Idehara, Hisashi as Director
1 January 1999Resigned Kobayashi, Shigeru as Director
23 November 1998Appointed Kobayashi, Shigeru as Director