A former Deputy Associate Attorney General and Senior Associate White House Counsel, Mark now leads the firm’s Litigation, Government Response, and Crisis Management team. As a tenured attorney practicing in the Washington, D.C. and New York markets, Mark has successfully guided numerous Fortune 500 companies and individuals through high-stakes litigation and investigative matters. For nearly 20 years, he worked across multiple administrations in the federal government, including as a deputy associate attorney general in the office of the associate attorney general in the U.S. Department of Justice (DOJ), where his portfolio included criminal and civil matters relating to the Antitrust Division, Civil Division, the Consumer Protection Bureau, Environment and Natural Resources Division, and the Tax Division. He also served as an Assistant U.S. Attorney and as senior counsel in the office of the deputy attorney general in the DOJ, where he managed health care, IP, and civil and criminal enforcement matters.
Mark has managed complex litigation on behalf of corporations, startups, and individuals, and is well-versed in litigating complex criminal and civil actions, and handling cases involving multiple regulators, private litigants, Congress, and high-stakes crisis management engagements. An experienced trial lawyer and investigator, he also represents clients in sensitive government enforcement actions, corporate and congressional investigations, and litigating civil business disputes. Mark served as counsel in more than 10 jury trials to verdict in federal courtrooms across the nation.
Mark has represented major corporations and well-known individuals and has successfully resolved issues and disputes with government authorities. He worked as a deputy compliance officer in a Fortune 500 health care company that was under an HHS-OIG Corporate Integrity Agreement and served as a special advisor to boards and tech companies. He knows firsthand how to counsel companies and boards on effective detection of fraud, waste and abuse and how best to refer or disclose possible fraud matters to government agencies, including Congress, the DOJ, SEC, Federal Trade Commission, Department of Labor, Health and Human Services (HHS), Centers for Medicare and Medicaid Services (CMS), Department of Defense, Department of Homeland Security, state attorneys general and foreign regulators.
Additionally, Mark supports clients in managing FCPA matters related to the DOJ and U.S. Securities and Exchange Commission (SEC), as well as investigations relating to cybersecurity issues. He has worked closely with government authorities to minimize exposure and advised on ESG litigation and compliance procedures.
He has deep experience on matters relating to the False Claims Act, health care fraud, the opioid crisis, and competition and consumer harm in the online marketplace. He managed False Claims Act and bribery investigations for the DOJ’s Civil and Criminal Fraud Sections, was a member of DOJ’s Medicare Fraud Strike Force, and served as deputy general counsel for the special inspector general for Iraq reconstruction. Grider has collaborated with the Department of Defense, the State Department and other agencies addressing international fraud and money laundering issues stemming from the nation’s involvement in Iraq, Afghanistan and other contingency operation locations. He also liaised on policy initiatives relating to elder fraud and financial exploitation, as well as criminal antitrust procurement collusion.
University of Missouri – Columbia, JD (1998); Thurgood Marshall Scholar
Truman State University, BA, magna cum laude, Dean’s List (1995)
