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Jacob Fields


Jacob has extensive experience defending clients in securities, white collar, anti-corruption, and regulatory investigations and enforcement matters.

Jacob has managed numerous internal FCPA and U.S. sanctions investigations for multinational companies in the energy, mining, pharmaceutical, and financial-services sectors. He regularly advises U.S. and non-U.S. companies on compliance with U.S. sanctions and AML rules, including by helping clients craft risk-appropriate policies and controls. His practice also focuses on complex commercial litigation and corporate disputes, and he has broad experience representing emerging growth companies. Jacob previously served as law clerk to the Honorable Robert L. Pitman of the United States District Court for the Western District of Texas in Austin.



Representative matters

Government and Regulatory Investigations

Representation of multiple hedge funds in SEC and FINRA investigations of internal control issues.

Representation of broker/dealers by numerous authorities related to subjects such as securities, antitrust/price fixing, market manipulation, and compliance controls.

Representation of U.S., European, and Chinese pharmaceutical, oil & gas, automobile, and telecommunications companies in connection with internal investigations and voluntary disclosures to the Department of Justice and Office of Foreign Assets Control (OFAC) regarding potential violations of U.S. sanctions and anti-corruption laws.



Attorney-at-Law, New York

Attorney-at-Law, District of Columbia

Attorney-at-Law, Texas


Georgetown University Law Center J.D., cum laude

Executive Notes Editor, Georgetown Law Journal

Texas Tech University B.B.A., cum laude

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.