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Arthur Luk represents corporations, directors, officers, and executives, and Big 4 accounting firms and individual auditors in investigations conducted by the US Department of Justice (DOJ), US Securities and Exchange Commission (SEC), and Public Company Accounting Oversight Board (PCAOB). Mr. Luk has extensive experience with securities class actions, shareholder derivative suits, and complex commercial litigation in federal and state courts, including insurance coverage disputes and putative class actions arising out of data breaches. He is sought after by clients worldwide in a number of industries, including banking and finance, consumer products, insurance, pharmaceuticals, private equity, real estate, and telecommunications.

Mr. Luk serves as co-chair of the firm’s hiring committee.


  • Private equity and venture capital firms in numerous DOJ and SEC investigations.
  • Accounting firms and individual auditors in numerous SEC and PCAOB investigations, including in a contested PCAOB disciplinary proceeding.
  • Financial institutions in SEC investigations involving accounting and financial reporting.
  • Companies in DOJ and SEC investigations regarding compliance with the FCPA.
  • Companies, executives, and other employees in DOJ investigations regarding possible off-label promotion of pharmaceuticals.


The Legal 500 US
"Next Generation Lawyer" – Securities Litigation: Defense (2017-2018)
Minority Corporate Counsel Association (MCCA)
"Rising Star" (2016)



  • J.D., Columbia Law School, 2003, Harlan Fiske Stone Scholar
  • B.A., Johns Hopkins University, 2000, Phi Beta Kappa


  • District of Columbia
  • New York


  • Fellow, Leadership Council on Legal Diversity (LCLD)

  • Member, American Bar Association, Section of Litigation, Professional Liability Litigation Committee