LAWYER PROFILE
Brian Christiansen

Brian Christiansen

USA 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 2 practice areas

About

Provided by Simpson Thacher & Bartlett LLP

USA

Practice Areas

With more than two decades of experience, Brian Christiansen is recognized as one the country’s foremost financial services lawyers. He counsels U.S. and international banking organizations, nonbank financial services firms and their investors and counterparties on all types of regulatory, transactional, compliance and enforcement matters. Brian often handles multifaceted and novel matters in the financial services industry. He has helped clients structure and execute acquisitions, investments and corporate transactions, obtain charters, raise capital, develop new products, implement compliance programs, conduct internal investigations and resolve enforcement actions. Brian routinely represents clients before the OCC, FDIC, Federal Reserve and state banking departments.

Career

Joined Firm as Partner, 2024.

Professional Memberships

Chairman, Mergers and Acquisitions Subcommittee, Banking Law Committee, American Bar Association (2011-2015).

Personal

J.D., The George Washington University, 2002 (with honors; Member, The George Washington Law Review); B.S., University of Virginia, 1999 (McIntire School of Commerce, Finance).

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Financial Services Regulation: Financial Institutions M&A - USA - Nationwide

Band 2
Band 2

Individual Editorial
Brian Christiansen is recognized as a highly skilled transactional and regulatory attorney, who offers specialized counsel to financial services firms. He is seasoned at handling M&A and regularly engages with the full spectrum of financial regulators.

Financial Services Regulation: Banking (Compliance) - USA - Nationwide

Band 3
Band 3

Individual Editorial
Brian Christiansen is recognized as a highly skilled transactional and regulatory attorney, who offers specialized counsel to financial services firms. He is seasoned at handling M&A and regularly engages with the full spectrum of financial regulators.

Strengths

Provided by Chambers

  • I have complete confidence in his work.

    Financial Services Regulation: Financial Institutions M&AChambers Guide to the USA
  • Brian is a trusted adviser with exceptional knowledge, who is responsive, easy to work with and who understands our needs.

    Financial Services Regulation: Financial Institutions M&AChambers Guide to the USA
  • Brian is deeply familiar with the bank regulatory landscape and has a unique ability to articulate that knowledge in a way that people can comprehend.

    Financial Services Regulation: Financial Institutions M&AChambers Guide to the USA

Ranked Individuals at Simpson Thacher & Bartlett LLP (157)

California

California: Los Angeles & Surrounds

California: San Francisco, Silicon Valley & Surrou

District of Columbia

Illinois

Massachusetts

New York

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