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King & Spalding LLP

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Mark Jensen

Work +1 202 737 0500
King & Spalding LLP


Mark Jensen is a partner in the Special Matters and Government Investigations team in King & Spalding’s Washington, D.C., office. Mr. Jensen’s practice focuses primarily on white collar criminal litigation, complex civil litigation, internal investigations and compliance counseling. His experience includes litigating criminal and civil cases at the trial and appellate levels, as well as defending individuals and companies in prosecutions and investigations by U.S. Attorneys’ Offices, multiple divisions of the Department of Justice, the SEC, FDA, EPA, NOAA and Congress. He also has conducted internal reviews and assessments for both government and private sector clients. Mr. Jensen’s litigation experience spans an array of subject matters, such as pharmaceutical, biotechnology, medical device and healthcare criminal and civil investigations, including False Claims Act litigation, matters related to the Foreign Corrupt Practices Act, tax and accounting-related fraud, environmental and wildlife prosecutions, and federal contracting and procurement fraud.


J.D., cum laude, Harvard University B.A., summa cum laude, Phi Beta Kappa, Indiana University.

United States: Dispute resolution

Corporate investigations and white-collar criminal defense

Within: Corporate investigations and white-collar criminal defense

In May 2018, in a major development, King & Spalding LLP welcomed former US acting attorney general Sally Yates to its Atlanta office. Yates is among a number of new recruits, which also includes former associate director for enforcement at the SEC Aaron Lipson, who joined in Atlanta in January 2019, and former senior vice president and deputy enforcement chief at FINRA Russell Ryan, who joined in Washington DC in September 2018. The 'hard-charging' team, led by Washington DC's Wick Sollers, is best known for handling multi-jurisdictional matters, including relating to potential violations of economic sanctions, the FCPA, the FCA, securities law and healthcare regulation. Key matters for Sollers included the successful representation, alongside Mark Jensen, of Boehringer Ingelheim Pharmaceuticals in an investigation, led by a consortium of state attorneys general representing all 50 states and the District of Columbia, into alleged off-label promotion of four products, and violations of the Anti-Kickback Statute; the case was settled for $13.5m. Chicago's Zachary Fardon represents Equifax in an investigation initiated by 48 state attorneys general into a major cybersecurity incident. Individual clients include an array of high-profile politicians and C-suite executives; as an example, the firm represented Michael Babich, the former president and CEO of Insys Therapeutics, in criminal case regarding the sale of opioids. Other key practitioners include Jason Jones and John Richter in Washington DC.

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