| Sumisho Computer Systems Corporation | CSK Corporation |
|---|---|
| 1968 | |
| Oct.Computer Services Corporation established in Okawacho, Higashi-ku (now Kitahama, Chuo-ku), Osaka-shi, Osaka | |
| 1969 | |
| Oct.Sumisho Computer Service Corporation established in Kitahama, Higashi-ku (now Kitahama, Chuo-ku), Osaka-shi, Osaka | |
| 1982 | |
| Jun.Listed in the Second Section of the Tokyo Stock Exchange | |
| 1985 | |
| Mar.Shifted to the First Section of the Tokyo Stock Exchange | |
| 1987 | |
| Oct.Established Sumisho Computer Service (USA), Inc. (now SCSK USA Inc.) | Jan.Company name changed to CSK Corporation |
| 1989 | |
| Feb.Shifted to the Second Section of the Tokyo Stock Exchange | |
| 1990 | |
| May.Established Sumisho Computer Service (Europe) Ltd. (now SCSK Europe Ltd.) | |
| 1991 | |
| Sep.Listed on the First Section of the Tokyo Stock Exchange | |
| 1992 | |
| Oct.Company name changed to Sumisho Computer Systems Corporation | |
| 2005 | |
| Aug.Merged with Sumisho Electronics Co., Ltd. | Oct.Shifted to a holding company structure Company name was changed to CSK Holdings Corporation |
| 2007 | |
| Feb.Established Sumisho Computer Systems (Shanghai) Ltd. (now SCSK Shanghai Limited)Nov.Established Sumisho Computer Systems (Asia Pacific) Pte. Ltd. (now SCSK Asia Pacific Pte. Ltd.) | |
| 2010 | |
| Oct.Shifted from a pure holding company to an operating holding company Several Group companies merged with CSK Holdings Corporation, the surviving company name was changed to CSK Corporation | |
| 2011 |
|---|
| Oct.Sumisho Computer Systems Corporation merged with CSK Corporation, with SCS as the surviving company and the new company named SCSK Corporation |
| 2012 |
| Jun.Main business headquarter changed to Toyosu, Koto-ku, Tokyo |
| 2015 |
| Apr.netXDC Chiba Center 2 opened in Inzai, Chiba |
| 2018 |
| Dec.netXDC Sanda Center 2 opened in Sanda, Hyogo |
| 2019 |
| Jun.Established PT SCSK Global Indonesia Established SCSK Myanmar Ltd. |
| Oct.50th anniversary of SCSK Corporation's founding |
| 2021 |
| Oct.Established SCSK Minori Solutions Corporation (Merged Minori Solutions Co.,Ltd., CSI SOLUTIONS Corporation and WinTechnology Corporation) SCSK Group Okinawa Center Office opened in Urasoe, Okinawa |
| 2022 |
| Apr.Transition to the Prime Market of the Tokyo Stock Exchange Established SCSK NEC Data Center Management, Ltd. |
| May.netXDC Chiba Center 3 opended in Inzai, Chiba |
| Nov.Established SCSK Automotive H&S Corporation |
| 2023 |
| Jun.Established SCSK RegTech Edge Corporation |
| Aug.Established SCSK Security Corporation |
| 2024 |
| Oct.Merger of Diamond head Co., Ltd. as the surviving company with SCSK Prescendo Corporation |
