| Feb 2007 | Listed on Nippon New Market of Osaka Exchange, Inc. (Currently JASDAQ of Tokyo Stock Exchange) | 
| Jul 2010 | 200 for one stock split. Introduced 100 shares trading unit | 
| Nov 2013 | Two for one stock split | 
| Dec 2016 | Two for one stock split | 
| Feb 2017 | Offering by a major shareholder through off-market trade | 
| Sep 2017 | Trading changed to Second Section of Tokyo Stock Exchange | 
| Nov 2017 | Two for one stock split | 
| Feb 2018 | Public offering of issued common shares held by major shareholders (to improve diversity in shareholder structure and liquidity in shrares) | 
| Mar 2018 | Trading changed to First Section of Tokyo Stock Exchange | 
| Dec 2019 | Two for one stock split | 
| Oct 2020 | Issuance of new shares as restricted stock to the Company's corporate officers and directors of subsidiaries | 
| Oct 2021 | Issuance of new shares as restricted stock to directors and corporate officers of the Company and directors of its subsidiaries | 
| Oct 2022 | Issuance of new shares as restricted stock to directors and corporate officers of the Company and directors of its subsidiaries | 
| Date | Paid-in Capital | Issued shares outstanding | Notes | 
| Jun-2007 | 268,400 | 10,735 | Issuance of 1,000 new shares through initial public offering on February 7, 2007 Increase of 7,788 shares due to five-for-1 stock split effective on September 27, 2006 | 
| Jun-2008 | 274,400 | 11,035 | Issuance of 300 new shares upon exercise of stock acquisition rights | 
| Jun-2009 | 280,400 | 11,335 | Issuance of 300 new shares upon exercise of stock acquisition rights | 
| Jun-2010 | 286,400 | 11,635 | Issuance of 300 new shares upon exercise of stock acquisition rights | 
| Jun-2011 | 288,400 | 2,347,000 | Issuance of 20,000 new shares upon exercise of stock acquisition rights Increase of 2,315,365 shares due to 200-for-1 stock split effective on November 1, 2013 | 
| Jun-2014 | 288,400 | 4,694,000 | Increase of 2,347,000 shares due to two-for-one stock split effective on November 1, 2013 | 
| Jun-2017 | 288,400 | 9,388,000 | Increase of 4,694,000 shares due to two-for-one stock split effective on December 1, 2016 | 
| Jun-2018 | 288,400 | 18,776,000 | Increase of 9,388,000 shares due to two-for-one stock split effective on November 1, 2017 | 
| Jun-2019 | 295,525 | 18,785,094 | Issuance of 9,094 new shares as restricted stock compensation | 
| Jun-2020 | 303,271 | 37,586,982 | Issuance of 16,794 new shares as restricted stock compensation Increase of 18,785,094 shares due to two-for-one stock split effective on December 1, 2019 | 
| Jun-2021 | 311,568 | 37,603,203 | Issuance of 16,221 new shares as restricted stock compensation | 
| Jun-2022 | 329,128 | 37,625,501 | Issuance of 22,298 new shares as restricted stock compensation |