Mark Sedlander is a trial attorney and litigator whose practice consists of white collar defense, government investigations, and business litigation. Mr. Sedlander has represented corporate clients and individuals, including executives, management personnel, and other corporate employees. His practice involves a wide range of industries, including health care, technology, commercial cannabis, import/export licensing violations in the commercial and national security context, and aviation management. He defends clients accused of wire fraud, bank fraud, mail fraud, bankruptcy fraud, mortgage fraud, securities fraud, violations of the Racketeer Influenced and Corrupt Organizations Act, and other white collar criminal and regulatory offenses. He regularly negotiates with the Department of Justice and other prosecuting and investigative agencies. He has successfully defended clients in federal and state investigations, and won significant, high-stakes courtroom victories. His civil litigation practice involves business disputes and other matters in state and federal courts and in arbitration proceedings.
Before joining Mancini Shenk LLP, Mr. Sedlander represented clients charged with federal criminal offenses with the Office of the Federal Public Defender in the Central District of California. He handled complex commercial matters as an Associate in the litigation department at a New York City law firm and clerked for the Honorable Fernando M. Olguin in the United States District Court for the Central District of California in Los Angeles.
Representative Matters
• Represented former executive and senior management of a large medical management services company during an investigation by California state regulators, the United States Department of Health & Human • Services, and the United States Department of Justice.
• Obtained dismissal on due process grounds of a federal criminal case alleging illegal reentry into the United States.
• Significant experience defending against Racketeer Influenced and Corrupt Organizations Conspiracy (“RICO”) charges.
• Prevailed on appeal on behalf of a medical partnership in anti-SLAPP litigation, with the California Court of Appeal affirming the trial court’s finding that claims against the partnership were barred.
• Obtained a government dismissal following a motion to dismiss on grounds that the indictment and police ballistics report failed to allege facts demonstrating that a damaged pistol was a “firearm” under the relevant criminal statute.
• Obtained a favorable settlement defending a large hospital group in a contract dispute with a national healthcare provider.
• Worked as co-counsel with the Office of the Michigan Attorney General and Solicitor General on behalf of the Michigan Workers’ Compensation Insurance Agency in a Second Circuit appeal, arguing for dismissal on grounds of state sovereign immunity in bankruptcy proceedings.
Education
Mark earned his J.D. at Georgetown Law. He received his undergraduate degree with high honors from the University of California, Santa Barbara, and is a member of Phi Beta Kappa.
Bar Admissions
Mark is a member in good standing of the State Bars of California and New York, admitted to practice before the Supreme Court of California and all of California’s lower state courts, the New York Court of Appeals and all of New York’s lower state courts, the United States District Court for the Central District of California, the United States District Courts for the Eastern and Southern Districts of New York, and the United States Court of Appeals for the Ninth Circuit.
Professional Affiliations
Mark is a member of The Century City Bar Association Board of Governors; The Federal Bar Association, Criminal Law and Federal Litigation Sections; The American Bar Association, Criminal Justice and Business Law Sections, White Collar Crime Committee; and The Los Angeles County Bar Association, Criminal Justice, Healthcare Law, and Litigation Sections.
