Cristina Diaz

Senior Counsel

Overview

Cristina Diaz is a senior counsel in the firm’s Financial Services Group and is based in the New York office. With more than 20 years of banking law experience, Cristina brings a unique combination of in-house insight and private practice depth. She advises foreign and domestic banks, fintechs, and digital assets businesses on bank regulation, compliance, and enforcement.

Cristina’s practice spans bank chartering and licensing, permissible activities, capital requirements, regulatory enforcement, M&A, and corporate governance. She advises clients navigating the intersection of traditional banking and emerging financial services, including digital assets companies seeking to acquire or establish national banks, and banks exploring partnerships with fintechs and digital assets firms. She regularly helps clients navigate complex relationships and remediation initiatives with state and federal financial regulators, including the Federal Reserve, OCC, FDIC, and the Utah Department of Financial Institutions.

Prior to joining Crowell, Cristina served in senior legal roles at UBS. Most notably, she served as executive director and general counsel for UBS Bank USA and advised on the bank’s charter conversion from a Utah industrial bank to an OCC national bank. She also served as head of legal in the U.S. Remediation Management Office, where she oversaw complex bank and securities regulatory remediation initiatives. Before her in-house tenure, Cristina practiced at an AmLaw 20 law firm, where she was a member of the Financial Institutions Group and advised on bank regulatory matters, as well as M&A and capital markets transactions.

Cristina is a member of the New York Bar and is fluent in Spanish.

Career & Education

    • New York University School of Law, J.D.
      New York University Law Review
    • New York University, B.A., summa cum laude
    • New York University School of Law, J.D.
      New York University Law Review
    • New York University, B.A., summa cum laude
    • New York
    • New York
    • Spanish
    • Spanish

Cristina's Insights

Client Alert | 7 min read | 09.02.26

OCC and FDIC Redefine “Unsafe or Unsound Practices”: The New Supervisory Framework for Banks

On August 27, 2026, the Office of the Comptroller of the Currency (OCC) and the Federal Deposit Insurance Corporation (FDIC) jointly issued a final rule that, for the first time, gives the term “unsafe or unsound practice” a binding regulatory definition.[1] With it came a uniform standard for Matters Requiring Attention (MRAs) and revised OCC examination manuals.[2]The Federal Reserve did not join the rulemaking, but has adopted comparable standards through guidance. What that means for holding companies and state-chartered institutions is addressed below.[3] The regulation takes effect November 2, 2026, and the revised OCC examination manuals took effect upon their issuance on August 27....

Cristina's Insights

Client Alert | 7 min read | 09.02.26

OCC and FDIC Redefine “Unsafe or Unsound Practices”: The New Supervisory Framework for Banks

On August 27, 2026, the Office of the Comptroller of the Currency (OCC) and the Federal Deposit Insurance Corporation (FDIC) jointly issued a final rule that, for the first time, gives the term “unsafe or unsound practice” a binding regulatory definition.[1] With it came a uniform standard for Matters Requiring Attention (MRAs) and revised OCC examination manuals.[2]The Federal Reserve did not join the rulemaking, but has adopted comparable standards through guidance. What that means for holding companies and state-chartered institutions is addressed below.[3] The regulation takes effect November 2, 2026, and the revised OCC examination manuals took effect upon their issuance on August 27....