Sheppard’s merger control practice is closely integrated with the firm’s corporate, antitrust and government enforcement teams, advising on HSR filings and complex merger reviews, including transactions that proceed into investigations and litigation. The group is particularly active in healthcare deals, alongside mandates in cement and concrete, with practice co-heads Leo Caseria and Ann O’Brien leading on matters involving DOJ, FTC and state enforcers. Attorneys are based in Washington DC.
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Testimonials
Collated independently by Legal 500 research team.
- ‘Great customer service and focus on the client's best interests.’
- ‘Extremely responsive.'
Key clients
- CRH Americas, Inc.
- CalPortland
- Knife River Corporation
- Prospect Health System
- Neumo
Work highlights
Represented CRH Americas, Inc. on theHart-Scott-Rodinoand antitrust aspects of its $2.1 billion acquisition of Eco Material Technologies.
Represented CalPortland in its $712 million acquisition of ready-mix assets from Vulcan Materials Co. announced Oct. 28, 2025.
Advised Knife River Corporation on antitrust and HSR issues related to its $454 million acquisition of Strata Corporation.
Practice head
Leo Caseria; Ann O'Brien