Cohen & Gresser

Cohen & Gresser LLP is a privately held law firm headquartered in New York City. It was established in 2002 by Mark Cohen and Lawrence Gresser and operates as a specialist legal-services business rather than as a consumer-facing product brand. The firm represents clients in litigation and corporate transactions, with work extending across borders and involving matters that can require coordinated advice in multiple jurisdictions. The firm’s profile is closely associated with complex disputes, government investigations, criminal and regulatory matters, international trade, and corporate work. Its lawyers include former prosecutors, among them former Assistant United States Attorneys from the Southern and Eastern Districts of New York. That prosecutorial background is part of the firm’s positioning in sensitive investigations and enforcement-related matters. Some lawyers have also held adjunct teaching roles at nearby law schools, linking the practice to legal education and professional networks. Cohen & Gresser has developed an international dimension through its lawyers and offices, including activity in London and work involving Europe and other jurisdictions. Miriam González Durántez joined the firm in 2019 as co-chair of its International Trade and Government Regulation practice after relocating from Europe to Silicon Valley. Her appointment strengthened the firm’s visibility in international trade and government-regulation work. London managing partner Jeffrey Bronheim was removed and investigated in 2023 following sexual-harassment allegations; Daniel Mathias subsequently succeeded him in the London leadership role. The firm has also represented clients in several high-profile matters. In 2021, partner Christian Everdell defended Ghislaine Maxwell in the federal criminal case concerning her alleged role in the abuse of minors connected to Jeffrey Epstein. In 2022, firm co-founder Mark Cohen and Everdell represented former FTX chief executive Sam Bankman-Fried in a federal investigation following the cryptocurrency exchange’s collapse. These engagements illustrate the firm’s willingness to handle high-stakes criminal-defense and investigative mandates, while also exposing it to substantial public scrutiny because of the prominence of the clients and proceedings. In November 2025, the firm was reported to be the first United States law firm to enter negotiations with private-equity interests over restructuring its practice through a management services organization. The reported discussions are significant because traditional law-firm ownership and fee arrangements are constrained by professional-conduct rules in many jurisdictions. The report described negotiations rather than a completed transaction, so the firm’s eventual ownership, management, and operating structure should not be inferred from the announcement alone. Cohen & Gresser’s brand is therefore built around specialized legal expertise, cross-border capability, litigation strength, and access to lawyers with government-enforcement experience. Available reference material does not establish a detailed financial profile, a complete office list, or a definitive account of all practice groups and current leaders. Those omissions are retained rather than filled with unsupported claims.

Cohen & Gresser LLP was founded in New York City in 2002 by Mark Cohen and Lawrence Gresser. From its beginning, the firm operated as a professional legal partnership serving clients through advocacy, counseling, and transactional work rather than selling standardized consumer products. Its stated scope includes litigation and corporate transactions, with matters conducted for clients in the United States and across international markets. A notable feature of the firm’s professional identity is the participation of lawyers with public-service and prosecutorial experience. Some attorneys previously served as Assistant United States Attorneys in the Southern or Eastern Districts of New York. This background supports the firm’s work on white-collar defense, government investigations, enforcement proceedings, and other matters in which knowledge of federal prosecutors and investigative procedures is important. Several lawyers have also served as adjunct professors, contributing to the firm’s connection with legal education. The firm expanded its international profile through cross-border work and lawyers active in European and international regulatory matters. Miriam González Durántez joined in 2019 as co-chair of the International Trade and Government Regulation practice after moving from Europe to Silicon Valley. Christian Everdell joined the firm in 2017 after working as an Assistant U.S. Attorney in Manhattan. His public-service record included work connected with the prosecution of Joaquín “El Chapo” Guzmán, for which he received the Federal Drug Agents Foundation’s American Hero Award in 2014. Cohen & Gresser’s lawyers have represented individuals and organizations in cases that attracted extensive public attention. In 2021, Everdell defended Ghislaine Maxwell in the federal prosecution involving allegations of sexual abuse of minors and her connection to Jeffrey Epstein. In 2022, Mark Cohen and Everdell represented former FTX chief executive Sam Bankman-Fried in a federal investigation after FTX collapsed. These representations demonstrate the firm’s involvement in high-stakes criminal and investigative mandates, although the public prominence of the clients also made the firm part of broader media coverage surrounding those cases. The firm experienced a leadership controversy in London in 2023. Jeffrey Bronheim was removed as London managing partner and investigated amid sexual-harassment allegations. Daniel Mathias replaced him as London managing partner. The available reference does not provide a final public resolution of the investigation, so no conclusion about the allegations is recorded here. In November 2025, Cohen & Gresser was reported to be negotiating with private-equity interests about using a management services organization to reshape its practice. The report characterized the firm as the first U.S. law firm to enter such negotiations. Because the material describes negotiations rather than a completed agreement, the event is recorded as a strategic discussion and not as a completed acquisition, merger, or ownership change. The available sources establish Cohen & Gresser as an active New York-based law firm with international work, litigation and transaction capabilities, and a strong association with investigations and government-related matters. They do not establish a complete chronology of office openings, revenue, partnership composition, or all present practice-group leaders.

• 2025

  Reported negotiations over a management services organization

  [1]Cohen & Gresseren.wikipedia.org

  The firm was reported to be negotiating with private-equity interests over a management services organization intended to reshape its practice.

• 2023

  Change in London leadership

  [1]Cohen & Gresseren.wikipedia.org

  Jeffrey Bronheim was removed and investigated amid sexual-harassment allegations, and Daniel Mathias succeeded him as London managing partner.

• 2022

  Representation of Sam Bankman-Fried

  [1]Cohen & Gresseren.wikipedia.org

  Mark Cohen and Christian Everdell represented Sam Bankman-Fried in a federal probe following FTX’s collapse.

• 2021

  Representation of Ghislaine Maxwell

  [1]Cohen & Gresseren.wikipedia.org

  Christian Everdell defended Ghislaine Maxwell in her federal criminal case.

• 2019

  Miriam González Durántez joined as practice co-chair

  [1]Cohen & Gresseren.wikipedia.org

  Miriam González Durántez joined the firm as co-chair of its International Trade and Government Regulation practice.

• 2017

  Christian Everdell joined the firm

  [1]Cohen & Gresseren.wikipedia.org

  Christian Everdell joined Cohen & Gresser after serving as an Assistant U.S. Attorney in Manhattan.

• 2014

  Everdell received the American Hero Award

  [1]Cohen & Gresseren.wikipedia.org

  Christian Everdell received the Federal Drug Agents Foundation’s American Hero Award for work connected with the case against Joaquín “El Chapo” Guzmán.

• 2002

  Firm founded

  [1]Cohen & Gresseren.wikipedia.org

  Mark Cohen and Lawrence Gresser founded Cohen & Gresser in New York City.

A specialist, internationally oriented law firm positioned around complex disputes, investigations, government enforcement, international trade, and corporate transactions, with notable use of lawyers who have prosecutorial backgrounds.

• Legal services

  Litigation and dispute resolution

  The firm represents clients in litigation and other disputes. The available material identifies litigation as a core part of its practice, including matters requiring experienced advocacy and coordination across jurisdictions.

• Legal services

  White-collar defense and investigations

  Cohen & Gresser handles sensitive criminal-defense and government-investigation matters. Its former-prosecutor lawyers provide experience relevant to federal investigations, enforcement actions, and high-profile individual representations.

• Legal services

  International trade and government regulation

  This practice advises clients on international trade and government-regulation issues. Miriam González Durántez has served as co-chair of the practice since joining the firm in 2019.

• Legal services

  Corporate transactions

  The firm represents clients in corporate transactions. The supplied reference does not specify particular transaction types, sectors, or deal values, so this entry is limited to the general transactional scope documented for the firm.

• 2023

  London leadership investigation

  Jeffrey Bronheim was removed as London managing partner and investigated amid sexual-harassment allegations. Daniel Mathias later succeeded him. The available material does not state the final outcome of the investigation.

  Source

Read more

• 2025

  Negotiations over a management services organizationStrategy

  Background

  The firm was reported to be exploring a new management structure involving private-equity interests.

  Action taken

  Cohen & Gresser entered negotiations concerning a management services organization intended to reshape its practice.

  Aftermath

  The discussions were reported as negotiations, and the available material does not establish that a transaction or structural change was completed.

  Source

• 2023

  Change in London managing-partner leadershipOther

  Background

  Jeffrey Bronheim was removed and investigated amid sexual-harassment allegations.

  Action taken

  Daniel Mathias succeeded Bronheim as London managing partner.

  Aftermath

  The leadership change is documented, but the available reference does not provide the final outcome of the investigation.

  Source

• 2025

  Cohen & Gresser reported to be negotiating a private-equity-backed management structure[1]Cohen & Gresseren.wikipedia.org

  M&A

  In November 2025, the firm was reported to be the first U.S. law firm to enter negotiations with private-equity interests concerning a management services organization intended to reshape its practice.

• 2022

  Mark Cohen and Christian Everdell represented Sam Bankman-Fried[1]Cohen & Gresseren.wikipedia.org

  Other

  The firm’s co-founder Mark Cohen and partner Christian Everdell represented former FTX chief executive Sam Bankman-Fried in a federal probe following the cryptocurrency exchange’s collapse.

• 2021

  Christian Everdell defended Ghislaine Maxwell[1]Cohen & Gresseren.wikipedia.org

  Lawsuit · Other

  Partner Christian Everdell represented Ghislaine Maxwell in the federal criminal case concerning allegations that she participated in the abuse of minors connected to Jeffrey Epstein.

1. 1Cohen & Gresseren.wikipedia.org