| 2009 |
October |
Sompo Japan Insurance Inc. and NIPPONKOA Insurance Co., Ltd. drew up a share exchange agreement aimed at establishing a joint holding company and signed a business integration agreement.
|
| December |
Sompo Japan Insurance Inc. and NIPPONKOA Insurance Co., Ltd. obtained the approval of their shareholders at extraordinary General Meetings of Shareholders with regard to the establishment of NKSJ Holdings, Inc. |
| 2010 |
April |
NKSJ Holdings, Inc. was established. |
| NKSJ Holdings, Inc. was listed on the Tokyo Stock Exchange (First Section) and the Osaka Securities Exchange (First Section). |
| May |
Sompo Japan Insurance Inc. acquired 100% of shares of Tenet Insurance Company Limited and made the company a consolidated subsidiary of NKSJ Holdings. (Afterward, the company changed its name to Tenet Capital Ltd.) |
| October |
Sompo Japan Asset Management Co., Ltd. and ZEST Asset Management Ltd. merged into Sompo Japan Nipponkoa Asset Management Co., Ltd.(Afterward, the company changes its name to SOMPO ASSET MANAGEMENT Co., Ltd.) |
| November |
Sompo Japan Insurance Inc. acquired substantially all of the shares in Fiba Sigorta Anonim Sirketi and made the company a consolidated subsidiary of NKSJ Holdings. (Afterward, the company changed its name to Sompo Sigorta A.S.) |
| 2011 |
June |
Sompo Japan Insurance Inc. acquired additional shares of Berjaya Sompo Insurance Berhad and made the company a consolidated subsidiary of NKSJ Holdings, Inc.
|
| October |
Sompo Japan Himawari Life Insurance Co., Ltd. and NIPPONKOA Life Insurance Company, Limited merged into NKSJ Himawari Life Insurance, Inc. (Afterward, the company changed its name to Sompo Himawari Life Insurance Inc.)
|
| 2012 |
April |
NKSJ Holdings, Inc. consolidated Japan Insurance Services Inc. a subsidiary of NKSJ Holdings, Inc. (Afterward, the company changed its name to Sompo Japan Nipponkoa Insurance Services Inc.) |
| 2013 |
July |
The Tenet Sompo Insurance Pte. Ltd. and Tenet Capital Ltd., merged into Tenet Sompo Insurance Pte. Ltd. (Afterward, the company changed its name to Sompo Insurance Singapore Pte. Ltd.) |
| 2014 |
September |
NKSJ Holdings Inc. changed its name from NKSJ Holdings, Inc. to Sompo Japan Nipponkoa Holdings, Inc. |
| Sompo Japan Insurance Inc. and Nipponkoa Insurance Co., Ltd. merged into Sompo Japan Nipponkoa Insurance Inc.(Afterward, the company changed its name to Sompo Japan Insurance Inc.) |
| Sompo Japan Nipponkoa Insurance Services Inc. and NK Planning Co., Ltd. merged into Sompo Japan Nipponkoa Insurance Service Co., Ltd. (Afterward, the company changed its name to Sompo Japan Partners Inc.) |
| October |
The Yasuda Seguros S.A. and Marítima Seguros S.A., merged into Yasuda Marítima Seguros S.A. (Afterward, the company changed its name to Sompo Seguros S.A.) |
| 2015 |
December |
Sompo Japan Nipponkoa Holdings, Inc., acquired 100% of shares of Watami no Kaigo Co., Ltd. converted this company into a consolidated subsidiary, and changed its name to Sompo Care Next Inc.
|
| 2016 |
March |
Sompo Japan Nipponkoa Holdings, Inc., acquired 100% of shares of Message Co., Ltd., and made the company and its subsidiaries into a consolidated subsidiary. (Afterward, the company changed its name to Sompo Care Message Inc.)
|
April |
Healthcare Frontier Japan Inc., Sompo Japan Nipponkoa Risk Management Inc. and Sompo Japan Nipponkoa Healthcare Services Inc. merged into Sompo Risk Management & Health Care Inc.
|
| October |
Sompo Japan Nipponkoa Holdings, Inc. changed its name to Sompo Holdings, Inc.
|
| 2017 |
January |
Sompo Care Message Inc. became a wholly owned subsidiary of Sompo Holdings, Inc. and the company was delisted from the Tokyo Stock Exchange (JASDAQ). (Afterward, the company changed its name to Sompo Care Inc.) |
| March |
Sompo International Holdings Ltd. was established and became a consolidated subsidiary of Sompo Holdings, Inc. |
| Sompo Japan Nipponkoa Insurance Inc. acquired 100% of shares of Endurance Specialty Holdings Ltd. (which thereafter was liquidated after Sompo International Holdings Ltd. had replaced its position of the top shareholding company) and made the company and its subsidiaries into consolidated subsidiaries of Sompo Holdings, Inc. |
| April |
Sompo Holdings, Inc. consolidated PT Sompo Insurance Indonesia, a subsidiary of Sompo Holdings, Inc. |
| 2018 |
January |
Sompo International Holdings Ltd established a SI Insurance (Europe) SA in Luxembourg and made it a consolidated subsidiaries of Sompo Holdings, Inc. |
| July |
Sompo Care Inc., Sompo Care Next Inc., Japan Care Service Inc., and Planning Care Inc., all of which were subsidiaries of Sompo Holdings, Inc., merged and changed the name of the company to Sompo Care Inc. |
| October |
Sompo Risk Management & Health Care, a subsidiary of Sompo Holdings, Inc., split its health care business and established Sompo Health Care Support Inc. and it became a consolidated subsidiary of Sompo Holdings, Inc. As a result, Sompo Risk Management & Health Care changed its company name to Sompo Risk Management Inc. |
| 2019 |
January |
SI Insurance (Europe), SA and Sompo Japan Nipponkoa Insurance Company of Europe Limited, consolidated subsidiaries of Sompo Holdings, Inc., merged and changed the name of the company to SI Insurance (Europe), SA. |
| April |
Sompo Holdings, Inc. consolidated Mysurance Inc., a subsidiary of Sompo Holdings, Inc. |
| July |
SAISON AUTOMOBILE AND FIRE INSURANCE COMPANY, LIMITED and Sompo 24 Insurance Company Limited, consolidated subsidiaries of Sompo Holdings, Inc., merged and changed the name of the company to SAISON AUTOMOBILE&FIRE INSURANCE CO., LTD. |
| 2021 |
| April |
Sompo Holdings, Inc. consolidated Sompo Warranty Inc., a subsidiary of Sompo Holdings, Inc. |
| July |
Sompo Light Vortex Inc. was established and became a consolidated subsidiary of Sompo Holdings, Inc. |
| 2023 |
February |
Sompo Holdings, Inc., acquired 100% of shares of ND Software Co., Ltd. and made the company and its subsidiaries into consolidated subsidiary. |
