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Corporate Profile

Capital 18,428 million yen
Foundation October 1990
Business Overview Corporate management and overall control of group companies through ownership of shares and other forms of equity.
Business Establishment [Headquarters]
Sumitomo Fudosan Shinjuku Grand Tower 30th Floor,8-17-1 Nishishinjuku Shinjuku-ku,Tokyo 160-6130
Tel:+81-3-6863-5623 (Representative)
Koki Sato
Representative Director
Etsuko Okajima
Outside Director
Yusuke Asakura
Outside Director
Yoshiki Ishikawa
Outside Director
Akie Iriyama
Outside Director
Mio Takaoka
Outside Director
Shuji Yamaguchi
Tadahiro Mouri
Outside Auditor (Full-time)
Mamoru Furushima
Outside Auditor
Takeshi Okuyama
Outside Auditor
Founder Mamoru Nanamura
No.of Employees Septeni Group as of September 2022
1,600 full-time employees/ 1,909 employees
*The figures are revised due to the recount of workforce (full-time: 1,602→1,600 / employees: 1,907→1,909).
Annual Fiscal Term Last day of December
Main Financing Banks MUFG Bank, Ltd. (Shinjuku Chuo Branch)
Mizuho Bank (Shinjuku Branch)
Mitsui Sumitomo Bank (Shinjuku West Gate Branch)
Industry Associations Association of New Economy
Accounting Auditor KPMG AZSA LLC
Listing Market Tokyo Stock Exchange Standard Market


  • Sumitomo Fudosan Shinjuku Grand Tower 30th Floor, 8-17-1 Nishishinjuku Shinjuku-ku,Tokyo 160-6130
    (Corporate reception is on 28th floor, Event hall is on 27th floor. )
  • TEL:+81-3-6863-5623(Representative) FAX:+81-3-6863-5624
  • 3 minutes walk from Tokyo Metro Marunouchi Line's Nishi Shinjuku Station Exit 1
    6 minutes walk from Toei Oedo Line's Tocho Mae Station Exit E5