| 1991-03 |
Established SKAI Corporation at 3-8-20 Osu, Naka-ku, Nagoya City: primarily engaged in the sale of parking equipment, communication computers, and advertising |
| 1991-03-19 |
Sakai Holdings Co., Ltd. was established on March 19, 1991. |
| 1991-03-19 |
Established: March 19, 1991 |
| 1994-07 |
Started operation of mobile phone exclusive store "Digital Phone Shop" (now "SoftBank Shop") under a business consignment agreement with Kanematsu Corporation, which is now SoftBank Corporation |
| 1995-02 |
Relocated headquarters to 3-26 Fushimi-cho, Naka-ku, Nagoya City |
| 1995-05 |
Entered a secondary agency agreement with Kanematsu Corporation to start sales agency business for mobile communication devices and related services, and launched "Digital Phone Shop" (now "SoftBank Shop") through our agency |
| 1996-03 |
Started deployment of "Mobile Discount," a mobile phone multi-sale store, through a secondary agency agreement with Aichi Matsushita Life Electronics Co., Ltd. |
| 1996-03 |
Started deployment of mobile phone combined sales store "Mobile Discount" through secondary dealership agreement with Aichi Matsushita Life Electronics Co., Ltd. |
| 1996-08 |
Relocated headquarters to 27-17 Tsutsui 3-chome, Higashi-ku, Nagoya City for business expansion |
| 1997-12 |
Started deployment of "Tuker Shop," a mobile phone exclusive store based on a primary agency agreement with TU-KA Celluler Tokai (now KDDI Corporation) |
| 1998-03 |
Relocated headquarters to current location (5-21-20 Chiyoda, Naka-ku, Nagoya City) upon completion of the head office building |
| 1998-03 |
Relocated headquarters to the current location (5-21-20 Chiyoda, Naka-ku, Nagoya City) upon completion of the headquarters building |
| 1999-09 |
Established Telecom One Co., Ltd. (now SKAI Development Co., Ltd.) in Naka-ku, Nagoya City, as a specialized purchasing company |
| 1999-09 |
Established Telecom One Co., Ltd. (now SKI Development Co., Ltd.) in Naka-ku, Nagoya City, as a purchasing specialist company |
| 2000-01 |
Received investment from J-Phone Tokai Co., Ltd. (now SoftBank Corporation) |
| 2000-04 |
Transferred the status of primary agency of J-Phone Tokai Co., Ltd. (now SoftBank Corporation) from Kanematsu Corporation |
| 2000-08 |
Absorbed and merged two companies, Aichi Resin Co., Ltd. and Yūsei Ichiban Mobile Discount |
| 2001-04 |
Went public on the stock exchange and increased capital to 395 million yen |
| 2001-06 |
Started deployment of "au Shop," a mobile phone exclusive store based on a primary agency agreement with KDDI Corporation |
| 2001-09 |
Established Kanto branch in Yokohama City, Naka-ku |
| 2003-05 |
Relocated Kanto branch and renamed it Tokyo branch; unified store brand name from "Mobile Discount" to "Mobile House Sakai" |
| 2006-01 |
Established a joint venture "Central Partners Co., Ltd." (now a consolidated subsidiary) with Newton Financial Consulting Co., Ltd. to enter the insurance agency business |
| 2006-01 |
Established a joint venture "Central Partners Co., Ltd." (currently a consolidated subsidiary) with Newton Financial Consulting Co., Ltd. to enter the insurance agency business |
| 2007-04 |
Rebranded "Mobile House Sakai" to "SK Mobile" with a new store brand name |
| 2007-08 |
SKAI Development Co., Ltd. (now a consolidated subsidiary) entered the real estate management and leasing business with a large-scale multi-story parking lot |
| 2007-08 |
SKI Development Co., Ltd. (currently a consolidated subsidiary) entered the real estate management and leasing business with large-scale multi-story parking lots |
| 2008-07 |
Central Partners Inc. (currently a consolidated subsidiary) opened a Tohoku branch in Aomori City, Aomori Prefecture |
| 2008-07 |
Central Partners Co., Ltd. (currently a consolidated subsidiary) opened a Tohoku branch in Aomori City, Aomori Prefecture |
| 2009-02 |
Tokyo branch relocated to Yokohama City, Kanagawa Prefecture, and renamed to Kanto branch |
| 2009-09 |
Established "SK Management Inc." (currently a consolidated subsidiary) in Chita City, Aichi Prefecture, partnered with Tear Inc. to enter the funeral business |
| 2009-09 |
Established SKI Management Co., Ltd. (currently a consolidated subsidiary) in Chita City, Aichi Prefecture, partnered with Tia Co., Ltd., to enter the funeral business |
| 2010-07 |
SK Management Inc. started developing funeral halls "Tear"; opened the first hall "Tear Nishio" in Nishio City |
| 2011-11 |
With the completion of the "Tear Chita" funeral hall, the company became a five-hall system, and SK Management Inc. relocated its headquarters to Chita City |
| 2013-11 |
Entered the renewable energy business by installing solar power facilities and selling electricity |
| 2014-04 |
Central Partners Inc. (currently a consolidated subsidiary) opened Niigata branch in Niigata City, Niigata Prefecture |
| 2014-04 |
Central Partners Co., Ltd. (currently a consolidated subsidiary) opened a Niigata branch in Niigata City, Niigata Prefecture |
| 2014-09 |
Launched the first solar power plant "SK Iwamura Power Plant" in Ena City, Gifu Prefecture, as part of the renewable energy power generation business |
| 2015-04 |
Opened the second solar power plant "SK Okazaki Power Plant" in Okazaki City, Aichi Prefecture |
| 2016-02 |
Launched the third solar power plant "SK Arashiyama Power Plant" in Hiki District, Saitama Prefecture |
| 2016-03 |
Launched the fourth solar power plant "SK Tōin No.1 Power Plant" in Tōin Town, Mie Prefecture |
| 2016-04 |
Launched the fifth solar power plant "SK Tōin No.2 Power Plant" in Tōin Town, Mie Prefecture, operated by "SK Development Inc." (currently a consolidated subsidiary) |
| 2016-04 |
The 5th renewable energy project, the SKI Higashiu Solar Power Plant No. 2, was opened in Tōin Town, Mie Prefecture, operated by SKI Development Co., Ltd. (currently a consolidated subsidiary) |
| 2016-09 |
Launched the sixth solar power plant "SK Tsuge Power Plant" in Iga City, Mie Prefecture |
| 2017-09 |
Launched the seventh solar power plant "SK Wakayama Power Plant" in Wakayama City, Wakayama Prefecture |
| 2017-10 |
Transitioned to a holding company structure and changed the company name to Sakai Holdings Inc. |
| 2018-09 |
Launched the eighth solar power plant "SK Shinshiro Power Plant" in Shinshiro City, Aichi Prefecture |
| 2018-11 |
Established a joint venture "SK Frontier Inc." with Hikari Tsushin Inc. to enter the new power business |
| 2019-06 |
Launched the ninth and tenth solar power plants "SK Kumamoto Yatsushiro Power Plant" and "SK Kumamoto Yatsushiro No.2 Power Plant" in Yatsushiro City, Kumamoto Prefecture |
| 2019-07 |
Launched the eleventh solar power plant "SK Iga Inoda Power Plant" in Iga City, Mie Prefecture |
| 2019-08 |
The 12th renewable energy project, the SKI Higashihiroshima Solar Power Plant, was opened in Higashihiroshima City, Hiroshima Prefecture |
| 2020-06 |
The 13th and 14th renewable energy projects, the SKI Ibaraki Ushiku Solar Power Plant and the SKI Chiba Katori Solar Power Plant, were opened in Ushiku City, Ibaraki Prefecture, and Katori City, Chiba Prefecture |
| 2020-06 |
The 15th renewable energy project, the SKI Sendai Aoba Solar Power Plant, was opened in Sendai City, Miyagi Prefecture |
| 2020-06 |
The 13th renewable energy project, the SKI Ibaraki Ushiku Solar Power Plant, was opened in Ushiku City, Ibaraki Prefecture |
| 2020-06 |
The 14th renewable energy project, the SKI Chiba Katori Solar Power Plant, was opened in Katori City, Chiba Prefecture |
| 2020-06 |
The 15th renewable energy project, the SKI Sendai Aoba Solar Power Plant, was opened in Sendai City, Miyagi Prefecture |
| 2022-04 |
Due to a review of the market classification of the Tokyo Stock Exchange, the company transitioned from the JASDAQ (Standard) to the Standard Market |
| 2022-10 |
SKI Co., Ltd. (currently a consolidated subsidiary) merged with SKI Frontier Co., Ltd. (a consolidated subsidiary) |
| 2022-10 |
SKI Co., Ltd. (currently a consolidated subsidiary) merged with SKI Frontier Co., Ltd. (a consolidated subsidiary) |
