John Messina

John Messina is a partner in Haynes Boone’s Finance Practice Group in the firm’s New York office. He advises clients on equity derivative and secured lending transactions and provides related regulatory and interpretive advice.

John began his career as a capital markets and mergers and acquisitions associate at Sullivan & Cromwell and spent several years as an in-house attorney at several major investment banks advising the strategic equity and synthetic prime brokerage businesses.