| 2009 January | Aioi Insurance, Nissay Dowa General Insurance, and Mitsui Sumitomo Insurance Group* agreed to consult on management integration and forming a business alliance. |
|---|---|
| 2009 December | Extraordinary General Meeting of Shareholders approved a share exchange agreement with Mitsui Sumitomo Insurance Group Holdings and merger agreement with Nissay Dowa General Insurance (Aioi Insurance). Extraordinary General Meeting of Shareholders approved a share exchange agreement with Mitsui Sumitomo Insurance Group Holdings and merger agreement with Aioi Insurance (Nissay Dowa General Insurance). |
| 2010 April | Aioi Insurance, Nissay Dowa General Insurance, and Mitsui Sumitomo Insurance Group* integrated management and established "MS&AD Insurance Group". |
| 2010 October | Aioi Insurance merged with Nissay Dowa General Insurance to establish "Aioi Nissay Dowa Insurance". |
| 2011 June | Merged with Adlick Insurance. |
| 2000 March | Agreed on comprehensive business alliance based on prospective merger between Dai-Tokyo Fire & Marine Insurance and The Chiyoda Fire & Marine Insurance. |
|---|---|
| 2001 April | Birth of "Aioi Insurance" Simultaneously merged with life insurance subsidiary and started operations under the new name of "Aioi Life Insurance". |
| 2002 June | Formed business alliance with Insurance Australia Group (IAG). |
| 2003 October | Made comprehensive transfer of insurance policies held by the Japan branch of Winterthur Swiss Insurance Company. |
| 2004 July | Reached basic agreement on sales partnership with AXA Life Insurance. |
| 2007 December | Acquisition of non-life insurance license by "SBI Insurance Co.,Ltd.", a joint venture with SBI Holdings and SoftBank Corp. Operations began in January 2008. |
| 2008 March | Acquisition of non-life insurance license by "Adlick Insurance Co., Ltd.", a joint venture with Advance Create Co., Ltd. Operations began in April 2008 |
| 2008 October | Invested in Lotte Insurance Co., Ltd of Korea and agreed on strategic business alliance. |
| 2010 May | Aioi Life Insurance agreed with Mitsui Sumitomo Kirameki Life Insurance to merge on 1 October 2011 pending regulatory approval. |
| 1999 June | Agreed to strengthen cooperative and capital relationships among Nippon Life Insurance, Nissay General Insurance, and Dowa Fire & Marine Insurance. |
|---|---|
| 2000 May | Concluded merger agreement between Dowa Fire & Marine Insurance and Nissay General Insurance. |
| 2000 October | Agreed on development of joint initiatives among Sumitomo Marine & Fire Insurance, Mitsui Marine & Fire Insurance, Nippon Life Insurance, and Dowa Fire & Marine Insurance. |
| 2001 April | Dowa Fire & Marine Insurance merged with Nissay General Insurance to establish "Nissay Dowa General Insurance". Effected comprehensive transfer of in-force business from Dowa Life Insurance to Nippon Life Insurance. Jointly established a company to develop and administer insurance agency systems among Sumitomo Marine & Fire Insurance, Mitsui Marine & Fire Insurance, Nippon Life Insurance, and Nissay Dowa General Insurance. |
| 2001 May | Nippon Life Insurance purchased additional stock (raising its holding from 24.96% to 33.40% of total number of issued shares). |
| 2003 December | Agreed on business alliance with St. Paul (now Travelers, US). |
| 2006 April | Entered into business alliance with Ingosstrakh Insurance (Russia). |
