Margo Tank is the US Co-Chair of DLA Piper’s Financial Services Sector and Co-Chair of the Financial Regulatory and Technology Group. She advises commercial enterprises, financial institutions and technology companies on the full spectrum of legal and regulatory matters related to the use of electronic signatures and records to conduct business online or via a mobile device in compliance with the federal Electronic Signature in Global and National Commerce Act (ESIGN Act), the Uniform Electronic Transactions Act (UETA) and various Uniform Commercial Code (UCC) Articles enabling digital transactions, including Article 9-105. She also advises businesses on the use of smart contracts and blockchain technologies and the laws enabling money transfer, including virtual currencies and other emerging payments mechanisms. Ms. Tank also advises on laws related to privacy and data security matters, including the Gramm-Leach-Bliley Act, (GLBA), the Fair Credit Reporting Act (FCRA), and on other consumer protection laws, such as the Electronic Funds Transfer Act (EFTA) and federal and state unfair and deceptive acts and practices (UDAP/UDAAP) laws.

Ms. Tank began her legal career as counsel to the US House of Representatives, Committee on Banking and Financial Services. An early advocate for the financial services industry's acceptance and implementation of electronic signatures, she served as counsel to the Electronic Financial Services Council and assisted the group that drafted and lobbied for the federal ESIGN Act, and is currently counsel to the Electronic Signature and Records Association, where she works to further electronic financial services policy before Congress and federal regulators. She also is counsel and co-reporter for Standards and Procedures for Electronic Records and Signatures (SPeRS). She is a member of the American Bar Association's Business Law Section and the Committee on the Law of Commerce in Cyberspace, is on the xDTM Standard Board of Governors and is a legal member participant in the Digital Chamber of Commerce's Smart Contracts Alliance.

Ms. Tank is ranked in Chambers Fintech 2019 and 2020 and was recently named to the National Law Journal's list of Technology Trailblazers. She continues to be ranked in Legal 500. She has written books, articles and surveys on electronic signatures, smart contracts, virtual currency, privacy, financial services websites and mobile apps and more. She co-authored eight editions of Thomson Reuter's The Law of Electronic Signatures and Records (2012-2019), and three editions of SPeRS, a compilation of guidelines, procedures, checklists and strategies for developing systems to create, deliver, sign, manage and transfer legally enforceable electronic records and signatures in commercial and consumer transactions. 

Other notable publications include: Enabled by Lenders, Embraced by Borrowers, Enforced by the Courts: What You Need to Know About eNotes, MERSCORP Holdings, Inc. (2018); Smart Contracts – 12 Use Cases for Business & Beyond – A Technology, Legal & Regulatory Introduction, Digital Chamber of Commerce in collaboration with Deliotte (2016); Electronic Retail Installment Sales Contract in California, The Review of Banking & Financial Services, Volume 33 No 12 (2017).