| Jul’07 | Maekawa CPA Office was established in Minato-ku (by Kengo Maekawa, the Group CEO) |
| Apr’08 | For the purpose of consulting on accounting, Shiodome Partners K.K. was established Maekawa CPA Office changed its name to Shiodome Partners Accounting Firm |
| Nov’08 | Shiodome Certified Social Insurance & Labor Consultant Firm was established by Makoto Imai |
| Jan’09 | Shiodome Partners Law Firm was established by Hideki Sato |
| Feb’09 | Koguchi Sea Agency Firm was established by Taiki Koguchi |
| Mar’09 | Shiodome Gyoseishoshi Lawyer Firm was established by Kengo Maekawa |
| Sep’09 | HQ relocation to Shinbashi, Minato-ku |
| May’10 | Koguchi Sea Agency Firm changed its name to Shiodome Sea Agency Firm |
| Jan’11 | Business alliance with SPAL Managment Co.,ltd in China Shiodome Partners Group- Shanghai office was established |
| Jul’11 | Established Shiodome Partners (HK) Co.,Limited in Hong Kong |
| Aug’12 | Shiodome Partners Tax Corporation was established by Shiodome Partners Accounting Firm merged with Ryuta Sato CPTA office. |
| Oct’12 | Business alliance with “YL Ngan CPA” in Hong Kong |
| Dec’12 | Okinawa branch of Shiodome Partners Tax Corporation was established |
| Jan’13 | Business alliance with “AKGVG & Associates” Shiodome Partners Group- New-Delhi office was established |