| 2005-04-11 |
Established M&S Co., Ltd. (capital 25 million yen) on April 11, 2005. |
| 2005-04-11 |
Established M&S Co., Ltd. (capital 25 million yen). |
| 2005-09-27 |
Acquired 100% of Ailnet Co., Ltd. through a share exchange on September 27, 2005, and increased capital to 262.5 million yen. |
| 2005-09-27 |
Converted Ailnet Co., Ltd. into a 100% subsidiary via share exchange and increased capital to 262.5 million yen. |
| 2006-09-28 |
Acquired 100% of Alpha Staff (now Alpha Information Solution Co., Ltd.) through a share exchange on September 30, 2006. |
| 2006-09-28 |
Converted the former Alpha Staff (now Alpha Information Solution Co., Ltd.) into a 100% subsidiary via share exchange. |
| 2006-10-01 |
Transferred the CS division (training division) to Ailnet on October 1, 2006. |
| 2006-10-01 |
Transferred the CS department (training division) to Ailnet. |
| 2006-11-01 |
Transferred the Business Supply and System Solution businesses to Alpha IS on November 1, 2006, and transitioned to a pure holding company. |
| 2006-11-01 |
Transferred the Business Supply and System Solution businesses to Alpha IS and transitioned to a pure holding company. |
| 2007-04-01 |
Acquired 100% of Profit Cube Co., Ltd. through a share exchange on April 1, 2007. |
| 2007-04-01 |
On the same day, changed the name from M&S Co., Ltd. to PCI Holdings Inc. and moved headquarters from Kanda-Suda-cho, Chiyoda-ku, Tokyo to Kamiosaki, Shinagawa-ku, Tokyo. |
| 2007-04-01 |
Converted Profit Cube Co., Ltd. into a 100% subsidiary via share exchange; renamed from M&S Co., Ltd. to PCI Holdings Co., Ltd.; moved headquarters from Kanda-Suda, Chiyoda-ku, Tokyo to Kamiosaki, Shinagawa-ku, Tokyo. |
| 2007-07-01 |
Acquired 100% of Open Source Japan Co., Ltd. through a share exchange on July 1, 2007. |
| 2007-07-01 |
Converted Open Source Japan Co., Ltd. into a 100% subsidiary via share exchange. |
| 2008-09-01 |
On September 1, 2008, Open Source Japan Co., Ltd. merged with Ailnet Co., Ltd. and changed its name to Ail Open Source Co., Ltd. |
| 2008-09-01 |
Merged Open Source Japan Co., Ltd. with Ailnet Co., Ltd. and renamed to Ail Open Source Co., Ltd. |
| 2010-01-01 |
On January 1, 2010, Ail Open Source Co., Ltd. merged with Alpha Information Solution Co., Ltd. and changed its name to PCI Ios Inc. |
| 2010-01-01 |
Ail Open Source Co., Ltd. merged with Ail Open Source Co., Ltd. and renamed to PCI Aios Co., Ltd. |
| 2012-09-19 |
Established PCI Solutions Co., Ltd. (capital 50 million yen) on September 19, 2012. |
| 2012-09-19 |
Established PCI Solutions Co., Ltd. (capital 50 million yen). |
| 2013-01-22 |
Obtained Privacy Mark certification on January 22, 2013. |
| 2013-01-22 |
Initial certification date: January 22, 2013. |
| 2013-01-22 |
Obtained Privacy Mark certification. |
| 2013-02-28 |
Increased PCI Solutions Co., Ltd.'s capital to 360 million yen on February 28, 2013. |
| 2013-02-28 |
Increased PCI Solutions Co., Ltd.'s capital to 360 million yen. |
| 2013-04-15 |
Moved headquarters from Kamiosaki, Shinagawa-ku, Tokyo to Minamisan, Koto-ku, Tokyo on April 15, 2013. |
| 2013-04-15 |
Moved headquarters from Kamiosaki, Shinagawa-ku, Tokyo to Minamizawa, Koto-ku, Tokyo. |
| 2013-05-28 |
Transferred all shares of Profit Cube Co., Ltd. on May 31, 2013. |
| 2013-05-28 |
Transferred all shares of Profit Cube Co., Ltd. |
| 2014-07-01 |
Acquired 100% of Inspiration Co., Ltd. through a share exchange on July 1, 2014. |
| 2014-07-01 |
Converted Inspiration Co., Ltd. into a 100% subsidiary via share exchange. |
| 2015-08-03 |
Increased capital to 565.46 million yen on August 3, 2015. |
| 2015-08-03 |
Capital increased to 565.46 million yen |
| 2015-08-04 |
Listed on the Tokyo Stock Exchange Mothers market on August 4, 2015 (ticker: 3918). |
| 2015-08-04 |
Listed on the Tokyo Stock Exchange Mothers market (ticker: 3918) |
| 2015-09-02 |
Capital increased to 631.81 million yen |
| 2016-09-09 |
Capital increased to 9.7985 billion yen on September 9, 2016. |
| 2016-09-09 |
Capital increased to 979.85 million yen |
| 2016-09-12 |
Changed market to First Section of the Tokyo Stock Exchange on September 12, 2016. |
| 2016-09-12 |
Changed market to First Section of the Tokyo Stock Exchange |
| 2016-09-28 |
Capital increased to 1,037.41 million yen |
| 2016-11-28 |
Acquired all shares of SysWave Inc. and made it a 100% subsidiary on November 30, 2016. |
| 2016-11-28 |
Acquired all shares of SysWave Inc. and made it a 100% subsidiary |
| 2017-07-28 |
Acquired all shares of C.L.C. Inc. and made it a 100% subsidiary on July 31, 2017. |
| 2017-07-28 |
Acquired all shares of C.L.C. Inc. and made it a 100% subsidiary |
| 2017-10-02 |
Transferred all shares of Inspiration Inc. on October 2, 2017. |
| 2017-10-02 |
Transferred all shares of Inspiration Inc. |
| 2017-12-13 |
Made Lifenet Inc. a 100% subsidiary through a share exchange |
| 2018-01-28 |
Moved headquarters from Minamisasaki, Koto-ku, Tokyo to Toranomon, Minato-ku, Tokyo on January 29, 2018. |
| 2018-01-28 |
Moved headquarters from Minamisasaki, Koto-ku, Tokyo to Toranomon, Minato-ku, Tokyo |
| 2018-06-01 |
Established joint venture Safer Connected World Inc. with BluePlanet-works Co., Ltd. (capital 10 million yen) on June 1, 2018. |
| 2018-06-01 |
Established a joint venture, Safer Connected World Inc. (capital 10 million yen), with BluePlanet-works Inc. |
| 2018-09-01 |
Acquired shares of Vitech System Engineering Co., Ltd. and consolidated it as a subsidiary on September 1, 2018. Renamed the company to VSE Inc. |
| 2018-09-01 |
Acquired shares of ByTech System Engineering Inc. and made it a consolidated subsidiary; renamed the company to VSE Inc. |
| 2018-10-01 |
Reednet Inc. absorbed PCI Ios Inc. on October 1, 2018. |
| 2018-10-01 |
Lifenet Inc. absorbed PCI Ios Inc. |
| 2019-05-07 |
Acquired shares of Infinitek Inc. and consolidated it as a subsidiary on May 7, 2019. |
| 2019-05-07 |
Acquired shares of Infinitek Inc. and made it a consolidated subsidiary |
| 2019-11-28 |
Transferred 50% of SysWave Inc.'s shares (a consolidated subsidiary) on November 29, 2019. |
| 2019-11-28 |
Transferred 50% of shares of SysWave Inc. (our consolidated subsidiary) |
| 2020-01-01 |
Merged VSE Inc. into SysWave Inc. as the surviving company and renamed the company to Privatek Inc. on January 1, 2020. |
| 2020-01-01 |
Merged with SysWave Inc. with VSE Inc. as the surviving company; renamed the company to Privatek Inc. |
| 2020-10-01 |
Merged C.L.C. Inc. into Safer Connected World Inc. as the surviving company on October 1, 2020. |
| 2020-10-01 |
Merged with Safer Connected World Inc. with C.L.C. Inc. as the surviving company |
| 2021-01-15 |
Acquired all shares of Sword Inc. and made it a 100% subsidiary on January 15, 2021. |
| 2021-01-15 |
Acquired all shares of Sword Inc. and made it a 100% subsidiary |
| 2021-06-25 |
Capital increased to 2.0189 billion yen on June 25, 2021. |
| 2021-06-25 |
Capital increased to 2,091.89 million yen |
| 2021-10-01 |
Merged Infinitek Inc. into Privatek Inc. as the surviving company on October 1, 2021. |
| 2021-10-01 |
Privatek Co., Ltd. merged with Infinitek Co., Ltd., with Privatek as the surviving company. |
| 2022-04-04 |
Transitioned to the Tokyo Stock Exchange Prime market on April 4, 2022. |
| 2022-04-04 |
Transitioned to the Tokyo Stock Exchange Prime market. |
| 2022-10-01 |
Merged C.L.C. Inc. into PCI Solutions Inc. as the surviving company on October 1, 2022. |
| 2022-10-01 |
PCI Solutions Co., Ltd. merged with C.L.C. Co., Ltd., with PCI Solutions as the surviving company. |
| 2023-09-01 |
Transferred all shares of Reednet Inc. on September 1, 2023. |
| 2023-09-01 |
Transferred all shares of Lifenet Co., Ltd. |
| 2023-10-20 |
Moved to the Tokyo Stock Exchange Standard market on October 20, 2023. |
| 2023-10-20 |
Transitioned to the Tokyo Stock Exchange Standard market. |
| 2024-09-27 |
Became a consolidated subsidiary of Rester Co., Ltd. on September 27, 2024. |
| 2024-09-27 |
Becoming a consolidated subsidiary of Restar Co., Ltd. |
| 2025-01-22 |
Update date: January 22, 2025. |
| 2026-03-09 |
Initial certification date: March 9, 2026. |
| 2026-04-01 |
PCI Solutions Co., Ltd. merged with NSR Co., Ltd., with PCI Solutions as the surviving company. |
| 2026-07-01 |
Privatek Co., Ltd. became a consolidated subsidiary of Restar Co., Ltd. |
