| 2000 |
Business production is the purpose, Open Associates Co., Ltd. (now Opening Group Co., Ltd.) was established |
| 2000 |
Established |
| 2000-04 |
Founded the company, assumed the position of current representative director, established the company, assumed the position of current director, established RPA Technologies Inc., became President and CEO, established Stream Capital Partners Japan Inc., assumed the position of current representative director, established KeNex Law Office, and became a partner (current). |
| 2000-04 |
Established OPEN Group and assumed the post of representative director (current). |
| 2000-04 |
Established OPEN Group and assumed the post of director (current). |
| 2000-04 |
Established RPA Technologies Inc. and assumed the post of representative director and president. |
| 2000-04 |
Founded Stream Capital Partners Japan K.K. and assumed the post of representative director. |
| 2000-04 |
Established Kay Nekkusu Law Office and assumed the post of partner (current). |
| 2008 |
Established the company for the purpose of business production. Developed consulting for new businesses for large corporations. |
| 2008 |
Started offering "BizRobo!" |
| 2012 |
Established BizRobo Business Division for robot outsourcing. Started providing 'BizRobo!'. Established League Corporation through business split for sales outsourcing. |
| 2012 |
Established Segment Inc. for web marketing services |
| 2013 |
Founded Segment Inc. (now Open Inc.) for web marketing services. |
| 2013 |
Established BizRobo Japan Co., Ltd. through company split for robot outsourcing |
| 2014 |
Established BizRobo Japan Inc. (formerly RPA Technologies Inc., now Open Inc.) through business split for robot outsourcing. |
| 2016 |
Established OPEN ASSOCIATES USA, INC. for discovering and investing in cutting-edge technology seeds. |
| 2016 |
Changed the trade name of Open Associates Co., Ltd. to RPA Holdings Co., Ltd. and transitioned to a pure holding company |
| 2016 |
Established Open Associates Co., Ltd. as a new company through business split |
| 2016 |
Changed the trade name of BizRobo Japan Co., Ltd. to RPA Technologies Co., Ltd. |
| 2018 |
Transitioned the company to a pure holding company, renamed to RPA Holdings Inc., split off the consulting business division, and established Open Associates Inc. (now Open Inc.). |
| 2018 |
RPA Holdings Co., Ltd. listed on the Tokyo Stock Exchange Mothers Market |
| 2019 |
Listed on the Tokyo Stock Exchange Mothers Market. Acquired shares of Direct Inc. (now a consolidated subsidiary). |
| 2019 |
RPA Holdings Co., Ltd. listed on the Tokyo Stock Exchange First Section Market |
| 2020 |
Changed listing to the First Section of the Tokyo Stock Exchange. |
| 2020 |
Started offering "RoboRobo" |
| 2022 |
Established OPEN VENTURES Inc. |
| 2022 |
RPA Holdings Co., Ltd. transitioned to the Prime Market due to review of market classification by the Tokyo Stock Exchange |
| 2023 |
Moved to the Prime Market following review of the Tokyo Stock Exchange market segments. |
| 2024 |
Acquired shares of Neighbor Work Inc. (now a consolidated subsidiary). Established Hospitality Partners Inc. (now a consolidated subsidiary) to support medical corporation operations. Changed the company name to Open Group Inc. Merged RPA Technologies Inc., Segment Inc., and Open Associates Inc. to establish Open Inc. Acquired shares of Auto Ro Inc. (now a consolidated subsidiary). |
| 2024 |
Changed the trade name of RPA Holdings Co., Ltd. to Opening Group Co., Ltd. |
| 2024 |
Open Technologies Co., Ltd., Segment Inc., and Open Associates Co., Ltd. merged and changed the trade name to Open Co., Ltd. |
| 2025 |
Acquired shares of Asuka Payroll Pro Inc. (now a consolidated subsidiary). Acquired shares of Payroll Pro Inc. (now a consolidated subsidiary). |
| 2026 |
Acquired shares of OASIS INNOVATION Inc. (now a consolidated subsidiary). Acquired shares of Small and Medium Enterprise Support Center Inc. (now a consolidated subsidiary). |
