Go Beyond the Risk
with Time Machine

About us

Time Machine Underwriters is the first Managing General Agency (MGA) specialized in Warranty & Indemnity insurance in Japan.


We provide underwriting services on behalf of Mitsui Sumitomo Insurance Company as a MGA.


表明保証保険の実務(Practice of W&I Insurance) ―M&Aにおける新しいリスクマネジメント手法

Practice of W&I Insurance

Author: Kosuke Inada, Kenichi Ko
Publication: 19 November 2020


  • 12/15/2022

    Kosuke Inada was invited as a main speaker with Marsh Japan for the seminar “The Latest Practice of W&I Insurance including Risk Management after the Closing” held by the Japan Private Equity Association (JPEA). https://jpea.group/english/committee/knowledge-sharing-committee/

  • 10/19/2022

    Kosuke Inada was invited as a main speaker for the seminar “W&I Insurance for Real Estate M&A” held by the National&Public University Real Estate Organization Maru no Kai. https://www.marunokai.net

  • 8/26/2022

    The article on Mitsui Sumitomo Insurance and TMU was posted on MARR Online (August 26, 2022). https://www.marr.jp/mainfo/web_marr/entry/38972