David C. Mahaffey

David C. Mahaffey

Mutual Funds Law Securities Regulation
Recognized Since Recognized in Best Lawyers since 2009

About David

David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

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Reviews

4.4 / 5

0 Reviews

1,006 Profile Views

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Mei Lin Zhang

Jan 05, 2026

Strategic thinking prevented costly regulatory violations

Our asset management company was expanding into new mutual fund products when we discovered potential compliance issues. David's proactive approach saved us from what could have been significant regul...

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Lakshmi Patel

Jan 05, 2026

Dedicated advocate who understands investment management complexities

Facing allegations of improper mutual fund trading practices, I needed an attorney who truly understood the nuances of investment management. David Mahaffey demonstrated exceptional dedication to my c...

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Elena Volkov

Jan 05, 2026

Masterful handling of complex mutual fund registration process

Launching a new series of mutual funds involved navigating a maze of SEC registration requirements. David guided us through the entire process with remarkable efficiency. His experience with investmen...