25 June 2026Appointed Kawano, Tomohiro as Director
25 June 2026Resigned Tsukagoshi, Yuji as Director
7 November 2025Resigned Milleri Yasuda, Michiyo as Director
4 July 2025Appointed Tsukagoshi, Yuji as Director
4 July 2025Resigned Aota, Katsuyoshi as Director
4 July 2025Appointed Shimizu, Kenji as Director
4 July 2025Resigned Iizuka, Hirohiko as Director
4 July 2025Appointed Masaya, Mina as Director
4 July 2025Resigned Asatsuma, Ichiro as Director
4 July 2025Appointed Iijima, Shoko as Director
4 July 2025Appointed Milleri Yasuda, Michiyo as Director
4 July 2025Appointed Kondo, Tetsuji as Director
4 July 2025Resigned Hiwara, Maki as Director
16 April 2025Resigned Hieda, Hisashi as Director
16 April 2025Resigned Masaya, Mina as Director
16 April 2025Resigned Kobayashi, Takeshi as Director
27 January 2025Resigned Kano, Shuji as Director
31 July 2024Resigned Miyauchi, Masaki as Director
31 July 2024Appointed Kano, Shuji as Director
8 August 2023Resigned Takahashi, Matsunori as Director
29 July 2022Appointed Masaya, Mina as Director
30 July 2021Resigned Kishimoto, Ichiro as Director
30 July 2021Appointed Kobayashi, Takeshi as Director
31 July 2019Appointed Iizuka, Hirohiko as Director
31 July 2019Resigned Kanoh, Shuji as Director
31 July 2019Resigned Takamitsu, Kumasaka as Director
31 July 2019Resigned Yokoyama, Atsushi as Director
1 May 2019Resigned Kawauchi, Michiyasu as Director
1 May 2019Resigned Ishikawa, Hiroyasu as Director
1 May 2019Appointed Aota, Katsuyoshi as Director
1 May 2019Appointed Takahashi, Matsunori as Director
1 May 2019Appointed Hiwara, Maki as Director
1 May 2019Appointed Kishimoto, Ichiro as Director
1 May 2019Appointed Takamitsu, Kumasaka as Director
1 May 2019Resigned Katagai, Kenji as Secretary
1 May 2019Appointed Yokoyama, Atsushi as Director
1 May 2019Resigned Ando, Hajime as Director
1 May 2019Resigned Tanaka, Seiji as Director
1 May 2019Resigned Hazama, Shigeaki as Director
1 May 2019Resigned Nakaide, Denjiro as Director
1 May 2019Resigned Hoga, Takashi as Director
1 May 2019Resigned Ijichi, Akira as Director
1 May 2019Resigned Kiyohara, Takehiko as Director
1 May 2019Appointed Miyauchi, Masaki as Director
1 May 2019Appointed Kanoh, Shuji as Director
1 May 2019Resigned Ito, Hachiro as Director
1 May 2019Resigned Katagai, Kenji as Director
21 May 1993Appointed Ijichi, Akira as Director
21 May 1993Appointed Hazama, Shigeaki as Director
21 May 1993Appointed Ito, Hachiro as Director
21 May 1993Appointed Kiyohara, Takehiko as Director
21 May 1993Appointed Ishikawa, Hiroyasu as Director
21 May 1993Appointed Kawauchi, Michiyasu as Director
21 May 1993Appointed Hoga, Takashi as Director
21 May 1993Appointed Katagai, Kenji as Director
21 May 1993Appointed Tanaka, Seiji as Director
21 May 1993Appointed Nakaide, Denjiro as Director
21 May 1993Appointed Hieda, Hisashi as Director
21 May 1993Appointed Ando, Hajime as Director
21 May 1993Appointed Asatsuma, Ichiro as Director
21 May 1993Appointed Katagai, Kenji as Secretary