Sullivan & Cromwell LLP

Donald J Toumey

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Practice Areas

Financial institutions, M&A, regulatory, enforcement, corporate governance.


Partner since 1990. Donald Toumey is a member in the Firm’s General Practice/Corporate Law Group with a practice focused on banking, securities and financial institutions law. Mr. Toumey has advised on numerous major bank mergers and acquisitions, as well as bank acquisitions of investment management and investment banking firms. He has handled applications to, and requests for legal interpretations from, federal and state banking agencies for U.S. and non-U.S. banking organizations. He has extensive experience advising U.S. and non-U.S. banking organizations on banking and broker-dealer regulatory matters and on enforcement matters, including with respect to Bank Secrecy Act and Office of Foreign Assets Control issues. He also advises on securities offerings and disclosure matters involving U.S. and non-U.S. banking organizations.

Mr. Toumey is a former special assistant to the general counsel of the U.S. Department of the Treasury. He is also a member of the Firm’s Diversity Committee.

Professional Memberships

ABA; Federalist Society; NYCBA.


Yale Law School (JD, 1981); Williams College (BA, 1978).