Photo of Lukas (Luke)  Sosnicki

Lukas (Luke) Sosnicki Member

Areas of Practice


Bar Admissions

  • California
  • Colorado
  • New York


Northwestern University School of Law, J.D., cum laude, 2005

  • Editor, Northwestern University Law Review

University of Wisconsin, B.S., 2000

Luke Sosnicki is a commercial litigator in Dykema’s Los Angeles, California office. He has successfully litigated commercial contract disputes of all types, including claims involving breaches of warranty, breach of fiduciary duty, commercial landlord-tenant disputes, and trade-secret theft. He has also conducted several internal investigations in response to allegations of corporate misconduct. 

Mr. Sosnicki, whose background is in financial services litigation, also has extensive experience defending banks and mortgage servicers in individual and class action lawsuits across the country. He has successfully defended clients in lawsuits brought under various state and federal consumer protection statutes relating to loan origination, servicing, debt collection, foreclosure, as well as to unfair and deceptive practices generally. He is also an experienced appellate lawyer, having successfully represented numerous bank and servicer clients on appeal. His appellate victories include a recent published decision in the case of OC Interior Services, LLC v. Nationstar Mortgage LLC. [Opinion]

Before joining Dykema, Mr. Sosnicki served as Vice President and Assistant Legal Counsel for Nationstar Mortgage. At Nationstar, he managed hundreds of lawsuits alleging various lending violations, origination fraud, and loan-servicing errors. Prior to joining Nationstar, Mr. Sosnicki was an Assistant General Counsel for Aurora Bank FSB (formerly Lehman Brothers Bank FSB), where he also managed litigation and advised various business units on litigation risk, foreclosure practices, and state and federal laws governing default management.

Mr. Sosnicki has a B.S. in Political Science and English from the University of Wisconsin, Madison. He obtained his J.D. from the Northwestern University School of Law, where he graduated cum laude and served as an Editor of the Northwestern University Law Review.

Recognized in Southern California Super Lawyers® as a Rising Star in Business Litigation, 2016-2018