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John Menke


John has many years of experience representing investment banks in their capacities as underwriters of public offerings (including numerous SPAC IPOs) and placement agents and related roles in private placements, whether stand-alone or in connection with M&A transactions (including numerous De-SPAC PIPES).
John also has a long history of representing public and private companies across the oil and gas, industrial chemicals and restaurant focus areas in capital markets transactions, including public and private offerings of debt and equity securities. He regularly advises both buyers and sellers in mergers and acquisitions transactions involving both publicly traded and privately held targets. He also advises publicly traded clients on securities law compliance (annual, quarterly and periodic reports), corporate governance and monetization transactions.


Representative matters

ExcelFin Acquisition Corp. in connection with its $200 million IPO and pending $370 million business combination with Baird Medical Investment Holdings Limited.

Private placement agents in the business combination and $91 million PIPE transaction between European Biotech Acquisition Corp. and Oculis SA.

Private placement agents in $60 million PIPE transaction by Sonendo Inc.

The sole book-running manager on the upsized initial public offering of SilverBox Corp III, a special-purpose acquisition company, of 13,800,000 units at an offering price of $10 per unit, resulting in aggregate gross proceeds to the company of $139.38 million.

Leadership Positions And Professional Affiliations

Member, State Bar of Texas



Attorney-at-Law, Texas, 1985


Associate of Arts, Blinn College, 1980

Bachelor of Business Administration, University of Texas, Austin, 1982

J.D., University of Texas, 1985

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.