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.
- David Campari-Milano N.V.
- Genmab A/S
- GE Vernova
- Intercontinental Exchange
- Noble Corporation
- OCI N.V.
- Perrigo Company
- RHI Magnesita N.V.
- American Axle & Manufacturing
Work highlights
Advising Sun Pharma on antitrust matters, including the acquisition of Checkpoint Therapeutics in 2025.
Advised on all Antitrust issues as counsel to RHI Magnesita N.V. in its USD410 million acquisition of Resco Products, Inc.
Advised Granite Construction Incorporated on two major acquisitions valued at over USD710 million.
Other key lawyers
Noah Brumfield; Elaine Johnston