Donald S. Waack

Washington,  DC  U.S.A.
Phone202 263 3165

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Experience & Credentials

Practice Areas

  • Financial Services Regulatory & Enforcement
  • Broker-Dealer
  • Bank Regulatory
Contact InfoTelephone: 202 263 3165
Fax: 202 762 4279
University Yale University, B.A., with distinction, 2003
Law SchoolBoston University School of Law, J.D., 2008
Admitted2008, Virginia; 2009, District of Columbia

Donald Waack is an associate in the Financial Services Regulatory and Enforcement practice of the Washington office. He counsels domestic and non-US financial services firms on a broad range of regulatory, transactional and enforcement matters.

Regulatory. Don advises banks and other regulated financial institutions on investment authority issues and activities restrictions; regulatory capital; affiliate transactions and lending limits; regulatory reporting requirements; and legislative and regulatory developments of significance to the financial services industry. Recently, much of Don's practice has been devoted to counseling financial services clients on the strategic and operational implications of the Dodd-Frank Act, with a particular focus on the Volcker Rule, swap market regulation, and other areas with a significant cross-border impact. Don also advises clients on recent and pending developments in US and international regulatory capital requirements. He frequently drafts comment letters on these and other key regulatory issues on behalf of financial services firms and trade associations.

Transactional. Don also advises financial services clients on complex transactional matters, providing strategic advice and regulatory support for mergers and acquisitions and advising private equity clients on investments in the commercial banking sector. He has significant experience working with regulators to obtain approval of corporate transactions, as well as preparing regulatory applications and other filings in connection with corporate activities.

Enforcement. Don also has experience with sensitive internal investigations and similar matters involving domestic and non-US financial services firms, and has counseled depository institutions and holding companies on federal and state enforcement matters.

He joined Mayer Brown in 2008.


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Federal Reserve Board Issues Volcker Rule Conformance Period Extension
Scott A. Anenberg,Michael D. Lewis,Jerome J. Roche,David R. Sahr,Donald S. Waack, February 26, 2015
On December 18, 2014, the Federal Reserve Board (“Board”) announced that it is extending the Volcker Rule conformance period for certain fund investments and relationships from July 21, 2015, until July 21, 2016, and that it intends next year to grant a further extension of the...
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Office Information

Donald S. Waack

1999 K Street, N.W.
WashingtonDC 20006-1101


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