| 1876-06 |
Mitsui Bank is established as a private bank.(Capital stock: ¥ 2 million) |
| 1893-06 |
Mitsui Bank reorganizes itself as an unlimited partnership. |
| 1895-11 |
Sumitomo Bank is established as a private enterprise. |
| 1909-11 |
Mitsui Bank reorganizes into a limited company.(Capital stock: ¥ 20 million) |
| 1912-03 |
Sumitomo Bank reorganizes into a limited company.(Capital stock: ¥ 15 million) |
| 1936-12 |
The seven major banks of Hyogo Prefecture are merged into Kobe Bank. |
| 1940-12 |
Dai Nihon Mujin is established. |
| 1943-04 |
Mitsui Bank merges with Dai-Ichi Bank to form Teikoku Bank. |
| 1944-08 |
Teikoku Bank merges with Jugo Bank. |
| 1945-07 |
Sumitomo Bank merges with Hannan and Ikeda Jitsugyo Banks. |
| 1948-04 |
Dai Nihon Mujin is renamed Nihon Mujin. |
| 1948-10 |
Teikoku Bank is re-established by Dai-Ichi Bank's separation. |
| 1949-05 |
Teikoku Bank's shares become listed on the Tokyo and Osaka stock exchanges. |
| 1950-04 |
Listed on Sapporo Securities Exchange in April 1950 and Nagoya Stock Exchange in March 1989 thereafter |
| 1951-10 |
Nihon Mujin is renamed Nihon Sogo Bank. |
| 1952-12 |
Osaka Bank's name is restored to Sumitomo Bank. |
| 1954-01 |
Teikoku Bank's name is restored to Mitsui Bank. |
| 1960-04 |
Kobe Bank's trust division is transferred to Toyo Trust and Banking. |
| 1965-04 |
Sumitomo Bank merges with Kawachi Bank. |
| 1968-04 |
Mitsui Bank merges with Toto Bank. |
| 1968-12 |
Nihon Sogo Bank converts to an ordinary bank and is renamed Taiyo Bank. |
| 1973-10 |
Kobe Bank and Taiyo Bank merge to form Taiyo Kobe Bank. |
| 1986-10 |
Sumitomo Bank merges with Heiwa Sogo Bank. |
| 1989-01 |
Sumitomo Bank's shares become listed on London Stock Exchange. |
| 1989-03 |
Listed on Sapporo Securities Exchange in April 1950 and Nagoya Stock Exchange in March 1989 thereafter |
| 1990-04 |
Mitsui Bank and Taiyo Kobe Bank merge to form Mitsui Taiyo Kobe Bank. |
| 1992-04 |
Mitsui Taiyo Kobe Bank is renamed Sakura Bank. |
| 1996-06 |
THE WAKASHIO BANK ,LTD.("Wakashio Bank") is established, and starts operation in September. |
| 2001-04 |
Sakura Bank and Sumitomo Bank merge to form Sumitomo Mitsui Banking Corporation.(Capital stock: ¥ 1,276,7 billion) |
| 2002-12 |
Sumitomo Mitsui Banking Corporation (SMBC) establishes a holding company named Sumitomo Mitsui Financial Group, Inc.(SMFG) through a share transfer, and SMBC then becomes a wholly-owned subsidiary of SMFG. |
| 2003-03 |
SMBC merges with Wakashio Bank(merged bank's name: Sumitomo Mitsui Banking Corporation) |
| 2009-10 |
Nikko Cordial Securities Inc.(current SMBC Nikko Securities Inc.) becomes a wholly-owned subsidiary of SMBC. |
