Mitsui Sumitomo Marine Management (U.S.A.), Inc.


As part of the Mitsui Sumitomo Insurance Group (MSIG), Mitsui Sumitomo Marine Management (U.S.A.), Inc. is responsible for managing the member insurance companies located in the United States.

Company News

Mitsui Sumitomo Marine Management (USA), Inc. and MS Amlin plc announce new partnership with Air Centurion Services, LLC.

Mitsui Sumitomo Insurance Annual Report

MS & AD Holdings Press Releases

Mitsui Sumitomo Insurance Company of America, Mitsui Sumitomo Insurance USA Inc. and Aioi Nissay Dowa Insurance of America have taken action to comply with the requirements of the Illinois Department of Insurance Bulletin 2015-13 and Bulletin 2017-03. To read the Bulletin 2015-13 - Click here. To read the Bulletin 2017-03 - Click here and to review company actions being taken - Click here.

The Illinois Department of Insurance is available to affected policy holders for filing a complaint regarding any disaster-related dispute or issue. Consumers may call the Department's toll-free complaint hotline at 1-866-445-5364, or file a complaint online at:

California Workers' Compensation Required Reporting for First Aid Claims View English | View Spanish

MSIG adds "Claims Services" to its collection of informational brochures

Click on the pictures to learn more about MSIG's Innovative, Customized and Effective Workers' Compensation, Business Auto and Claim Services solutions.

Claims Services

Workers' Compensation

Business Auto

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