| 1972-09 |
Established Takara Construction Co., Ltd. in Yamato-cho, Itabashi-ku, Tokyo |
| 1973-01 |
Obtained license for real estate transaction business from Tokyo Governor |
| 1974-05 |
Relocated headquarters to Nakabanchō, Itabashi-ku, Tokyo |
| 1975-08 |
Obtained construction industry license from Tokyo Governor |
| 1979-06 |
Relocated headquarters to Daiichi Takara Building in Nakabanchō, Itabashi-ku, Tokyo |
| 1982-03 |
Started rental business |
| 1985-09 |
Obtained license for money lending business from Tokyo Governor |
| 1986-05 |
Established Takara Sumpo Inc., a sales and brokerage business |
| 1988-04 |
Established Takara Management Inc. (now Leben Community Inc.), a real estate management business |
| 1994-06 |
Started sales of our own condominium series Leben Heim |
| 1996-02 |
Changed company name from Takara Management Inc. to Leben Community Inc. |
| 1999-08 |
Obtained license for real estate transaction business from Minister of Construction |
| 1999-09 |
Absorbed Takara Sumpo Inc. |
| 2000-01 |
Obtained license for specific real estate joint enterprise |
| 2000-10 |
Changed company name to Takara Leben Inc. |
| 2001-08 |
Relocated to head office building in Ikebukuro, Toshima-ku, Tokyo |
| 2001-11 |
Listed on JASDAQ market |
| 2001-12 |
Established Tough Co., Ltd. (now Leben Zestock), a loan brokerage business |
| 2003-04 |
Listed on the Second Section of the Tokyo Stock Exchange |
| 2004-03 |
Listed on the First Section of the Tokyo Stock Exchange |
| 2004-05 |
Subsidiary acquisition of real estate brokerage business "Reliable Leben Inc." |
| 2004-11 |
Establishment of nursing care business "Az Partners Inc." |
| 2005-06 |
Change from general construction business license to specific construction business license |
| 2005-09 |
Registration of trust beneficiary rights sales business |
| 2006-05 |
Relocation of headquarters to "Shinjuku Sumitomo Building" in Nishi-Shinjuku, Shinjuku-ku, Tokyo |
| 2008-10 |
Announcement of new Takara Leben brand logo |
| 2009-03 |
Transfer of part of shares of "Az Partners Inc." from consolidated subsidiary to equity method affiliate due to sale |
| 2010-04 |
Started detached house subdivision business through self-construction |
| 2010-05 |
Completed Japan's first capital increase through rights issue |
| 2011-09 |
Disposal of shares of "Takara Live Net Inc. (formerly Reliable Leben Inc.)" leading to delisting |
| 2012-04 |
Announcement of new condominium brands "LEBEN" and "THE LEBEN" |
| 2012-10 |
Acquisition of rental management business "Takara Housing Inc. (formerly Takara Property Inc.)" as a subsidiary |
| 2013-02 |
Start of energy business |
| 2013-10 |
Establishment of investment management business "Takara Asset Management Inc. (now MIRARTH Asset Management Inc.)" |
| 2013-11 |
Making "Sunwood Inc." an equity method affiliate |
| 2014-06 |
Acquisition of "Oasis Inc. (now Takara Leben Real Net Inc.)" as a subsidiary |
| 2014-10 |
Acquisition of a subsidiary, "Nikko Construction Inc. (formerly Takara Corporation)" |
| 2015-01 |
Acquisition of "Live Net Home Inc. (formerly Takara Leben Tohoku Inc.)" as a subsidiary |
| 2015-01 |
Acquisition of a subsidiary, "Housing Information Center Inc. (formerly Takara Leven West Japan)" |
| 2016-01 |
Acquisition of "Nikko Property Inc. (now Levent Trust Inc.)" as a subsidiary |
| 2016-06 |
"Takara Leben Infrastructure Investment Corporation" listed on the Tokyo Stock Exchange Infrastructure Fund Market as the first issue |
| 2017-01 |
New condominium brand "NEBEL" announced |
| 2017-05 |
Relocated headquarters to "Steel & Iron Building" in Marunouchi, Chiyoda-ku, Tokyo |
| 2018-01 |
Changed company name from "Tough Co., Ltd." to "Leben Zestock Co., Ltd." |
| 2018-01 |
Made PAG Real Estate Investment Advisory Co., Ltd. (formerly Takara PAG Real Estate Investment Advisory Co., Ltd.) a subsidiary |
| 2018-03 |
Established a representative office in Hanoi, Vietnam (currently Takara Leben Hanoi Representative Office) |
| 2018-07 |
Leben Leben Real Estate Investment Corporation listed on the Tokyo Stock Exchange Real Estate Investment Trust Securities Market (REIT Market) |
| 2019-06 |
Changed company name from "Nikko Property Co., Ltd." to "Leben Trust Co., Ltd." |
| 2019-10 |
Merged Leben Trust Co., Ltd. into Takara Property Co., Ltd. |
| 2020-01 |
Established a general incorporated company, Leben Funding, for asset management business |
| 2021-01 |
Established asset management business, "Leven Funding LLC" |
| 2021-04 |
Made ACA Clean Energy Co., Ltd. (formerly Leben Clean Energy) a subsidiary in the renewable energy business |
| 2021-11 |
Discontinued as a subsidiary due to transfer of shares of Sunwood Co., Ltd. |
| 2022-04 |
Changed company name from "Nikko Takara Corporation" to "Leben Home Build Co., Ltd." |
| 2022-04 |
Transitioned from Tokyo Stock Exchange First Section to Prime Market due to market classification review |
| 2022-08 |
Established Takara Leben Thailand Co., Ltd. in Bangkok, Thailand |
| 2022-09 |
50th anniversary of founding |
| 2022-10 |
Changed name to MIRARTH Holdings Co., Ltd., transitioned to a holding company structure; changed company name from Takara Leben West Japan to Takara Leben; absorbed Takara Leben Tohoku, moved headquarters to Marunouchi, Chiyoda-ku, Tokyo |
| 2022-10 |
Changed trade name to "MIRARTH Holdings Inc." and transitioned to a holding company structure |
| 2022-10 |
Changed trade name from "Takara Leven West Japan Inc." to "Takara Leven Inc." |
| 2022-10 |
Merged with "Takara Leven Tohoku Inc." and relocated headquarters to Marunouchi, Chiyoda-ku, Tokyo |
| 2023-02 |
Delisted from the Tokyo Stock Exchange Prime Market through a stock buyback of Leben Infrastructure Investment Corporation |
| 2023-06 |
Established MIRARTH Green Tech Co., Ltd. in the renewable energy business |
| 2023-11 |
Established MIRARTH Agri Tech Co., Ltd. (Cambodian local corporation) in biomass fuel business |
| 2024-03 |
Changed company name from Takara PAG Real Estate Investment Advisory Co., Ltd. to MIRARTH Real Estate Investment Advisory Co., Ltd. |
| 2024-04 |
Changed trade name from "Leven Clean Energy Inc." to "MIRARTH Energy Solutions Inc." |
| 2024-04 |
Changed trade name from "Takara Asset Management Inc." to "MIRARTH Asset Management Inc." |
| 2026-07 |
Changed trade name from "Leven Home Build Inc." to "MIRARTH Architect Inc." |
| 2026-07 |
Changed trade name from "Leven Zest Stock Inc." to "MIRARTH Zest Stock Inc." |
