Derek Simmons: Email & Phone Number

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Partner at Atsumi & Sakai|Tokyo, Japan

Position:

Partner at Atsumi & Sakai

Location:

Tokyo, Japan

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Last updated: 2026-06-26

Updated: 2026-06-26

Found email addresses for Derek Simmons:

Business emails:

d**********s@simmons-simmons.com,

d***********s@aplaw.jp

Personal emails:

d*******m@yahoo.com

Found phone for Derek Simmons:

+81-***-***-9351

A different Derek Simmons?

Work Experience 24 years

Partner at Atsumi & Sakai

Oct 2023 - Current

Associate, subsequently Of Counsel at Atsumi & Sakai

Nov 2020 - Sep 2023

Solicitor (full-time client secondment) at Nippon Export and Investment Insurance

Apr 2022 - Apr 2025

Associate at Morgan, Lewis & Bockius LLP

Oct 2018 - Sep 2020

General Counsel at MDY Legal

Oct 2015 - May 2018

Counsel, Transaction Management Group at Aozora Bank

Jul 2013 - Aug 2015

Associate at Baker McKenzie

Apr 2012 - Jul 2013

Solicitor at Simmons & Simmons

Jul 2011 - Mar 2012

Solicitor at Ashurst

Oct 2008 - Jun 2011

Trainee solicitor at Orrick, Herrington & Sutcliffe LLP

Sep 2006 - Sep 2008

Research Promotion Executive at RIKEN

Jul 2002 - Aug 2004

Derek Simmons started working in 2002, then the employee has changed 9 companies and 8 jobs. On average, Derek Simmons works for one company for 2 years 2 months.

Derek is proficient in Japanese. Their professional focus is Banking Law, Competition Law, and Corporate Governance across 3 core areas.

Education

GDL at College of Law, London

MA at SOAS University of London

BA at University of Warwick

Leighton Park School

Frequently Asked Questions

What is Derek Simmons's email address?

SignalHire found verified email addresses for Derek Simmons, both business and personal. Their business email is d**********s@simmons-simmons.com, and personal emails include d*******m@yahoo.com.

What is Derek Simmons's phone number?

SignalHire found a verified phone number for Derek Simmons: +81-***-***-9351.

How do I contact Derek Simmons at Atsumi & Sakai?

You can reach Derek Simmons through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Derek Simmons's professional background?

Derek Simmons has 24 years of professional experience. They have held roles including Associate, subsequently Of Counsel, Solicitor (full-time client secondment), and Associate at companies such as Atsumi & Sakai, Nippon Export and Investment Insurance, and Morgan, Lewis & Bockius LLP. Their education includes GDL from College of Law, London, and MA from SOAS University of London.

Is Derek Simmons's contact information up to date?

Yes. Derek Simmons's SignalHire profile was last updated on 26 June 2026, reflecting their current position as Partner at Atsumi & Sakai in Chiyoda-ku, Tokyo, Japan.

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