1 April 2026Appointed Takei, Akifumi as Director
31 March 2026Resigned Miyasaka, Toshiaki as Director
1 April 2025Appointed Takakura, Yosuke as Director
31 March 2025Resigned Abe, Eiichi as Director
1 April 2022Appointed Abe, Eiichi as Director
31 January 2022Resigned Shigemoto, Taro as Director
25 June 2021Appointed Shigemoto, Taro as Director
1 October 2020Appointed Miyasaka, Toshiaki as Director
1 October 2020Resigned Shimada, Hideki as Director
1 April 2017Resigned Okumura, Motonori as Director
1 April 2017Appointed Shimada, Hideki as Director
1 October 2012Appointed Okumura, Motonori as Director
1 October 2012Resigned Shimada, Hideki as Director
1 April 2012Appointed Shimada, Hideki as Director
1 April 2012Resigned Okumura, Motonori as Director
1 April 2012Resigned Morozumi, Masayuki as Director
3 February 2009Appointed Okumura, Motonori as Director
3 February 2009Resigned Mochizuki, Hiroshi as Director
26 June 2007Resigned Olle Ribalta, Ramon as Director
1 April 2007Appointed Browne, Kevin as Director
15 October 2001Appointed Mochizuki, Hiroshi as Director
15 October 2001Resigned Kurumizawa, Hiroyuki as Director
27 July 2001Appointed Olle Ribalta, Ramon as Director
8 September 2000Resigned Harada, Yukata as Director
10 June 1999Appointed Morozumi, Masayuki as Director
10 June 1999Resigned Shindo, Masayoshi as Director
22 June 1998Appointed Harada, Yukata as Director
20 January 1998Appointed Kurumizawa, Hiroyuki as Director
15 January 1998Resigned Komatsu, Shimpei as Director
1 September 1996Appointed Shindo, Masayoshi as Director
30 August 1996Resigned Doi, Akitoshi as Director
4 January 1994Appointed Komatsu, Shimpei as Director
26 December 1993Resigned Matsuo, Jumpei as Director