A&O Shearman
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A&O Shearman fields a transatlantic merger control team spanning Dallas, New York, San Francisco, Silicon Valley and Washington DC, advising on complex, strategic transactions with coordinated clearance strategies across major jurisdictions. Noah Brumfield splits his time between Washington DC and Silicon Valley, advising on global merger strategy and enforcement risk, with particular strength at the intersection of antitrust and IP. For multi-jurisdictional mergers, Elaine Johnston is a go-to for chemicals, pharma and healthcare transactions before the FTC and DOJ. David Higbee, Puja Patel, Benjamin Gris and Jessica Delbaum have left the team.
Legal 500 Editorial commentary
Key clients
- American Axle & Manufacturing
- Atrion Corp.
Work highlights
Advising Sun Pharma on antitrust matters, including the acquisition of Checkpoint Therapeutics in 2025.