LAWYER PROFILE
Mark D Koestler

Mark D Koestler

Global 2026

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Ranked in 1 practice area

About

Provided by HSF Kramer

Practice Areas

- Immigration and mobility

Career

Mark is a partner based in our New York office. Mark is Head of Business Immigration, US, counsels and represents advertising agencies, banks and financial services institutions, hedge funds, fashion and luxury goods companies, theatrical production companies, and other entities in the hiring, transfer and retention of foreign national executives, developing optimal solutions for clients' executive, management, professional and workforce needs. Mark works with clients to develop their global workforce planning and mobility strategies, advising them on navigating complex immigration laws and policies, and provides immigration counsel in the context of mergers, acquisitions and spinoffs, to structure these transactions to ensure compliance with U.S. immigration law.

For additional information on Mark’s professional background, please visit: https://www.hsfkramer.com/our-people/m/mark-d-koestler

Chambers Review

Provided by Chambers

Chambers Global Guide

Immigration: Business - USA

Band 3
Band 3

Individual Editorial
Mark Koestler possesses significant experience assisting CEOs and high-profile individuals with visa applications, including O-1 and L-1 petitions.

Strengths

Provided by Chambers

  • His advice is straightforward, fully researched and supported.

    Immigration: BusinessChambers Global Guide
  • Mark is a brilliant lawyer who gives great thought to any issue we have. He is always quick to respond to our queries and generous with his time.

    Immigration: BusinessChambers Global Guide
  • He is very thorough, knowledgeable and helpful.

    Immigration: BusinessChambers Global Guide
  • Mark always has finger on pulse of what needs to happen. He is an excellent immigration attorney.

    Immigration: BusinessChambers Global Guide

Ranked Individuals at HSF Kramer (253)

Africa-wide

Australia

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