2011
- August
- Sales of Shares of REALUS INC. (Consolidated Subsidiary)
2010
- December
- Sammy NetWorks Co., Ltd. is reorganized into a wholly owned subsidiary of Sega Sammy Holdings Inc. following a share swap.
2009
- December
- Sales of Shares of Media-Trust Co., Ltd. (Consolidated Subsidiary)
- February
- The SC business of Sammy Corporation was taken over after a corporate spin-off.
2008
- July
- Consolidates SEGA SAMMY MEDIA.
- April
- SEGA SAMMY MEDIA. becomes a subsidiary
2006
- November
- REALUS INC. becomes a subsidiary
- October
- MediaTrust Co., Ltd. becomes a subsidiary
2005
- April
- The largest shareholder changes from Sammy Corporation to SEGA SAMMY HOLDINGS INC.
2004
- September
- Listed on the Tokyo Stock Exchange Mothers Market
2003
- March
- The company name changes to Sammy NetWorks Co., Ltd.
2002
- December
- The largest shareholder changes from USEN Broad Networks (present USEN CORPORATION) to Sammy Corporation
- August
- The company name changes to Ufs Mobile Co., Ltd.
2001
- June
- The largest shareholder changes from Nikkodo Co., Ltd., to USEN Broad Networks (present USEN CORPORATION)
2000
- March
- BMB.com is established as a wholly-owned subsidiary of Nikkodo Co., Ltd. (present BMB Corp.)











