Mr Mark Thierfelder > Dechert LLP > New York, United States > Lawyer Profile

Dechert LLP
Three Bryant Park, 1095 Avenue of the Americas
NEW YORK, NY 10036-6797
United States

Work Department





Mark E. Thierfelder is chair of the firm’s corporate and securities group and chair of the global private equity practice. He concentrates his practice on private equity transactions and domestic and international mergers and acquisitions throughout North America, Europe and Asia. In particular, Mr. Thierfelder represents leading private equity funds and their portfolio companies in a full range of corporate transactions, including mergers and acquisitions, recapitalizations, leveraged financings, restructurings, and reorganizations. In addition, he negotiates, structures, and executes corporate transactions on behalf of strategic buyers and sellers, and has significant experience representing banks and other institutional lenders in leveraged financings and restructurings.

Over the course of his 25+ year career, Mr. Thierfelder has acted on some of the most significant transactions in the market. In fact, he played a lead role advising on the largest private equity exit in 2019, according to Bloomberg. He also advised on two of the largest private equity-backed acquisitions globally in the past three years, according to Refinitiv, including his representation of GIC on the acquisition by a Blackstone-led consortium of a majority stake in Thomson Reuters’ Financial & Risk business at an overall valuation of US$20 billion, and his representation of SK hynix as part of a consortium on the US$18 billion acquisition of Toshiba Corporation’s NAND flash memory and solid-state drive business. 

He is also a frequent speaker and author on mergers and acquisitions and other corporate and securities topics. He has been featured in CNBC and Bloomberg Markets as well as published in The American Lawyer, The Deal PipelineNew York Law JournalMergers & Acquisitions magazine, Investment Dealers’ DigestLaw360Private Equity Online and other prominent media outlets. In addition, Mr. Thierfelder was selected to attend the Harvard Law School Leadership in Law Firms conference, a six-day intensive program for senior law firm leaders around the world to develop perspectives and skills necessary to be effective law firm leaders.

Mr. Thierfelder has extensive industry experience representing clients in sectors including technology, consumer products, defense, energy, infrastructure, retail, media and communications, healthcare, restaurants, life sciences, fishing, semiconductors, software, manufacturing, financial services and food and beverage. As a result, he can anticipate and address industry-unique issues that often arise in the transaction process and structure the transactions efficiently.


  • Trustee, McCarter Theatre, Princeton, NJ
  • Member, Advisory Board, The Kenan Institute for Ethics at Duke University, Durham, North Carolina
  • Trustee, Chair of Institutional Advancement, Executive Committee, National Humanities Center, Research Triangle Park, North Carolina
  • Co-Chair, Lawrenceville Parents Fund, The Lawrenceville School, Lawrenceville, New Jersey
  • Former Treasurer, Chair of Finance Committee, Executive Committee, Princeton Day School, Princeton, New Jersey
  • Former Member, Advisory Committee, The Deal
  • Former Member, Corporation Law Committee, New York City Bar Association
  • Former Member, Private Equity Editorial Advisory Board, Law360


  • Rutgers School of Law – Newark, J.D., 1992, with Honors, Order of the Coif
  • Duke University, B.A., 1986

Lawyer Rankings

United States > M&A/corporate and commercial > Private equity buyouts

(Leading lawyers)

Mark ThierfelderDechert LLP

Dechert LLP distinguishes itself with its strong global reach, acting for a wide range of private equity funds and other investors across key jurisdictions, and maintains its record in cross-border deals. The team works with its offices across Europe, Asia, and the Middle East on inbound and outbound work involving US investors or targets, and is able to provide lifecycle support to funds. The practice has continued to expand both in terms of clients, with Seawall Capital a standout client win, and at senior level, with Sarah Kupferman promoted to partner in January 2021 in recognition of her emerging role in buyouts and portfolio company M&A. Mark E Thierfelder  leads the team, and remains active on behalf of top clients including GIC, Cerberus, and CVC, representing GIC as part of a consortium in its landmark $34bn acquisition of Medline. Jonathan Kim continues to combine deal value and deal volume effectively, working with major funds on bulge-bracket and mid-market deals, while Ken Young divides his time between New York and Pennsylvania, co-heading the domestic PE team and handling complex, often cross-border deals in the technology, financial services and energy sectors, among others. Derek M Winokur  has closed a number of major strategic deals for One Equity Partners and portfolio companies during 2021, and also remains active on behalf of other strategic buyers and sellers Lawyers are in New York unless otherwise stated.

United States > M&A/corporate and commercial > M&A: large deals ($1bn+)

At Dechert LLP, cross-border transactions form approximately two-thirds of the workload – the team is able to draw on support from a substantial global platform spread across more than 20 offices across the US, Europe, Asia and the Middle East. In New York, Mark Thierfelder, a veteran of over 200 transactions, leads the corporate and securities practice and also serves as global chair of the firm’s private equity department. Key sectors include life sciences, healthcare, industrials and financial services.