Mark Sedlander

Mark Sedlander

Mark Sedlander is a trial attorney and litigator whose practice consists of white collar defense and government investigations.

Mr. Sedlander has represented corporate clients and people facing government investigations, including executives, management personnel, and other corporate employees and professionals. He regularly negotiates with the Department of Justice and other prosecuting and investigative state and federal agencies.

His matters involve:

• financial services
• sports and entertainment
• healthcare
• commercial cannabis
• import/export violations (Arms Export Control Act)
• antiquities and art
• aviation management
• education
• technology

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. Mr. Sedlander was recognized for his white collar defense work in the 2024 Lawdragon 500 X – The Next Generation, a guide highlighting “the future leaders of the law.”

Representative Matters

• Government agreement to dismiss federal indictment alleging client’s high-level coordination of wire fraud conspiracy.
• Represented tech company being investigated for a widespread student loan fraud: company not charged.
• Represented employee in a high-profile criminal investigation involving California’s mandatory reporting requirements: client not charged.
• Represented real estate investor in investment-related criminal investigation: client not charged.
• Demonstrated that a federal agency overstated a client’s sentencing guidelines range by more than 15 years: guidelines range revised downward and accepted by sentencing court.
• Obtained dismissal on due process grounds of a federal indictment alleging illegal reentry into the United States.
• Numerous successful motions to suppress evidence on constitutional grounds by court order or government acquiescence.
• Significant experience defending against Racketeer Influenced and Corrupt Organizations Conspiracy (RICO) charges.
• 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.
• Represented former executive and senior management of a large medical management services organization during an investigation by California state regulators (Department of Managed Health Care (DMHC)), the United States Department of Health & Human Services, and the United States Department of Justice.

Education

• Georgetown Law, JD
• University of California, Santa Barbara, BA (High Honors, Phi Beta Kappa)

Bar Admissions

• California
• New York

Courts

• United States Court of Appeals for the Ninth Circuit
• United States District Court for the Central District of California
• United States District Court for the Southern District of New York
• United States District Court for the Eastern District of New York

Professional Affiliations

• The American Bar Association: Criminal Justice Section, White Collar Crime Committee
• The Federal Bar Association: Criminal Law and Federal Litigation Sections
• The Los Angeles County Bar Association: Criminal Justice, Healthcare Law, and Litigation Sections
• Judicial Appointments Committee for The Los Angeles County Bar Association
• The Beverly Hills Bar Association
• Georgetown Law Alumni Regional Engagement Council for Southern California
• Santa Monica Family YMCA Board of Directors