Overview
Stephanie's practice spans complex commercial litigation, government and internal investigations, and regulatory compliance. She represents and counsels clients, including technology companies, in high-stakes disputes and the regulatory and compliance challenges that increasingly accompany them.
As a litigator, Stephanie has substantial experience in complex commercial, intellectual property, and regulatory disputes, including consumer class actions, deceptive trade practices, trade secret misappropriation, and trademark, trade dress, and copyright matters. Her experience spans all phases of litigation, including discovery, depositions, motion practice, mediation, settlement negotiations, and trial preparation. She also represents clients in internal investigations and regulatory matters, including those involving sensitive business conduct, compliance issues, and government enforcement risk.
Stephanie advises clients on ethics and compliance, privacy, AI governance, and broader regulatory risk. She counsels clients on compliance with US and international privacy laws, including GDPR and emerging state privacy laws, and guides them through cybersecurity incidents and data breach responses. She helps clients assess the legal and operational risks of new technologies, data practices, and intellectual property issues, and counsels them on supply chain and human rights issues, greenwashing/ESG risks, and enforcement and regulatory trends.
Stephanie maintains an active pro bono practice with a focus on advancing racial justice and reproductive rights. She has drafted amicus briefs on behalf of the National Women's Law Center in Nicole v. Chase and Students for Fair Admissions v. Harvard/UNC and worked on civil rights and impact litigation cases in cooperation with the American Civil Liberties Union and the Human Rights Campaign.
- New York
- US District Court, Southern District of New York
- US Court of Appeals, Fifth Circuit
- J.D., New York University School of Law, Senior Articles Editor, NYU Review of Law and Social Change
- B.A., University of Texas, Austin, Archer Fellow; Dean’s List, International Relations and Global Studies; Minor in Middle Eastern Studies; Concentration in Science, Technology, and Environment
News & Publications
Publications
Deploying AI to Shed Light on the Murky Depths of Multi-Tier Supply Chains
SupplyChainBrain
May 14, 2026
International Compliance Blog
Recalibrating the Disclosure Decision
Investigation Costs, Detection Risk, and the AI Inflection Point
April 6, 2026
By: Evan T. Abrams, Andrew C. Adams, Matt Galvin, David Isaak, Galen Kast, Marlon Paz, Claire Rajan, Ross Weingarten, Stephanie Sebastian
International Compliance Blog
DOJ Confirms New Corporate Enforcement Policy Applies to Export Control and Sanctions Matters
April 2, 2026
By: Evan T. Abrams, Andrew C. Adams, Matt Galvin, Galen Kast, Ross Weingarten, Stephanie Sebastian
Client Alerts
DOJ Confirms New Corporate Enforcement Policy Applies to Export Control and Sanctions Matters
April 2, 2026
By: Evan T. Abrams, Andrew C. Adams, Matt Galvin, Galen Kast, Ross Weingarten, Stephanie Sebastian
Press Releases
May 30, 2025
Noteworthy
Publications:
- "ESG Engagement & Litigation in the United States" Interview, Lexology, November 27, 2023.