Heather Greenfield
Biography
Overview
Heather Greenfield is a partner in the Global Antitrust/Competition Practice of White & Case. Heather has extensive experience guiding clients through all phases of merger clearance and non-merger investigations (DOJ, FTC, state AGs), and before federal courts in litigated challenges by the government.
Clients also benefit from Heather's significant experience on compliance related to the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR Act) and global merger notification requirements. Heather has a proven track record advising clients on complex cross-border transactions that trigger filings around the world. Her expertise spans dozens of industries including technology, pharmaceuticals, health care, medical devices, energy, semiconductors, solid waste, railroads, rental cars, construction, chemicals, and retail.
Heather has consistently been recognized as a leading antitrust lawyer by several publications. In 2024, the Legal 500 US recognized Heather as a Next Generation Partner nationwide for US Merger Control, and as one of only three "Rising Stars" from 2021-2023. As reported by The Legal 500 US, clients said Heather is "incredibly bright, and always finds solutions to unique problems" and further acclaimed she is "dedicated, sharp, calm." In 2024, the M&A Advisor recognized Heather as an "Emerging Leader." Heather also was named a Competition "Rising Star under age 40" by Law360 in 2024 and a "Rising Star" among all lawyers in Washington, DC by the National Law Journal in 2023. In 2023, Heather was shortlisted as a Rising Star in Corporate for the Women in Business Law awards.
Some of her recent victories include:
- Novasep Process SAS on a milestone FTC antitrust approval filed by Sartorius Stedim Biotech to acquire Novasep's chromatography equipment business, which was the first such approval after the FTC's new policy of imposing Prior Approval in consent decrees.
- Hertz through its precedent-setting, immense, cross-border bankruptcy, including spin-offs and its acquisition by consortium-led Knighthead in an expedited timeline.
- Meta (formerly Facebook) on its US$5.7 billion investment into a leading Indian ecommerce platform - Jio - combined with a strategic partnership to provide communications and payments channels to users and merchants.
- Saudi Aramco in its US$69.1B merger with SABIC in the recent merger of the world's largest oil companies.
Heather routinely works with clients on antitrust compliance and competition-related counseling involving competitor collaborations, joint ventures, trade associations, information exchanges, and various business initiatives. Clients have benefited from Heather's expertise in government investigations under Section 8 of the Clayton Act.
She has authored and co-authored a number of articles and publications, including the US chapter of Merger Control, a comparative guide published by The Legal 500 (and "Getting the Deal Through: Market Intelligence – Merger Control," a guide published by Lexology.
Heather serves as the co-chair of the White & Case Washington Office Women's Network.
From 2013-2014, Heather served as a law clerk for the Honorable Jane R. Roth of the United States Court of Appeals for the Third Circuit.
Experience
Novasep Process SAS on a milestone antitrust approval of a Federal Trade Commission petition filed by Sartorius Stedim Biotech S.A. to acquire the chromatography equipment business of Novasep. The approval is the first grant in recent years affirmatively approving an acquisition, and is also the first such approval after the implementation of the FTC's new policy of imposing prior approval in consent orders.
Hertz through its precedent-setting, immense, cross-border bankruptcy, including spin-offs and its acquisition by consortium-led Knighthead in an expedited timeline; shortlisted by FT North America Innovative Lawyers Awards 2021 in the Rescue, Restructuring and Recovery category.
Meta (formerly Facebook) on its US$5.7 billion investment into a leading Indian ecommerce platform - Jio - combined with a strategic partnership to provide communications and payments channels to users and merchants.
Representation of Saudi Aramco on its US$69.1 billion acquisition of a 70% stake in Saudi Basic Industries Corporation (SABIC) from the Public Investment Fund (PIF). The transaction was named "M&A Deal of the Year (Over US$50 billion)" by the M&A Advisor (2020).
Macquarie Infrastructure Partners on several matters, including:
- US$1.212 billion sale of WCA Waste Corporation to GFL Environmental Inc., a leading North American provider of diversified environmental solutions.
- Acquisition of Lakeshore Recycling Systems, the largest private waste company in Illinois.
dMY Technology Group Inc. IV in its $2.8 billion business combination with Planet Labs.
Deerfield Healthcare Technology Acquisitions Corp. in its US$614 million business combination with CareMax Medical Group LLC and IMC Medical Group Holdings LLC, technology-enabled providers of value-based care to seniors.
Landcadia Holdings II, Inc. in its US$745 million acquisition of Golden Nugget Online Gaming, Inc. (GNOG), one of the nation's leading online casinos, from Landry's Fertitta, LLC, part of the Landry's group of restaurant and hospitality businesses.
A consortium composed of Brookfield Infrastructure and its institutional partners and GIC on the US$8.4 billion acquisition of Genesee & Wyoming Inc. The transaction was named "Private Equity Deal of the Year" by IFLR 2020.
Lantheus Holdings, Inc., a leader in the development, manufacture and commercialization of innovative diagnostic imaging agents and products, in its US$500 million acquisition of Progenics Pharmaceuticals, Inc., an oncology company developing innovative medicines and artificial intelligence to find, fight and follow cancer.
Entrepreneurial Equity Partners, a private equity firm focused on making investments in the food and consumer packaged goods industries, in a series of acquisitions.
Harvest Partners in the sale of TruckPro Holding Corp., one of the nation's largest independent distributors of heavy-duty truck and trailer parts, to an affiliate of Platinum Equity.
CVC Capital Partners in the US$1.8 billion acquisition of ConvergeOne Holdings, Inc., a leading global IT and managed services provider of collaboration and technology solutions. The transaction was named "M&A Deal of the Year (Over US$1 billion)" and "Information Technology Deal of the Year (Over US$1 billion)" by M&A Advisor (2020).
Vertex Pharmaceuticals, Inc., in its acquisition of cystic fibrosis drug, CTP-656, from Concert Pharmaceuticals, Inc., for up to US$250 million.
Anthem, Inc., in several matters, including its attempted US$54.2 billion acquisition of Cigna Corporation.
Omnicare, the US's leading provider of pharmacy services to long term care facilities, in its sale to CVS Health, for US$12.7 billion.
Zimmer Holdings, Inc. in its acquisition of Biomet, Inc., a leading global device manufacturer, for a total of US$13.35 billion.
