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Catherine Dargan leads the firm’s Corporate and Mergers & Acquisitions practices, and has advised numerous companies on their important strategic transactions for over 20 years. Ms. Dargan focuses her practice on mergers and acquisitions, including public and private, partnering arrangements and corporate governance. Ms. Dargan is Chambers-rated in Corporate/M&A, served for many years on the editorial board of M&A360, now serves on the editorial board of The M&A Lawyer, was recently named “Best in M&A” by LMG Euromoney and among The National Law Journal’s "Outstanding Women Lawyers," The Deal's “Healthcare, Pharma & Biotech Dealmaker of the Year” for 2020, and "Top Women in Dealmaking" for 2021, and was a finalist for The American Lawyer for “Corporate Dealmaker of the Year” for 2020. According to Legal 500 US, Ms. Dargan “is ‘excellent, pragmatic, personable and dedicated’”.

She represents clients in a variety of industries including technology and gaming, sports, media, life sciences, defense and government contracting, consumer products, and equipment and manufacturing.

Ms. Dargan served on the firm’s Management Committee for the last eight years.

  • Merck in its:
    • pending $1.85 billion acquisition of Pandion Therapeutics (Nasdaq: PAND);
    • $2.7 billion acquisition of ArQule (Nasdaq: ARQL); 
    • €2.1 billion acquisition of Antelliq Group, a leader in digital animal identification, traceability and monitoring solutions, the fastest growing part of the animal health industry;
    • $1.05 billion acquisition of Peloton Therapeutics;  
    • acquisition of Themis Bioscience, a SARS-CoV-2 candidate developer;
    • $425 million acquisition of OncoImmune; and
    • multi-year global merger integration with Schering-Plough.
  • Adtalem in its pending $1.48 billion acquisition of Walden.
  • Eaton Corporation in its:
    • $1.65 billion acquisition of Tripp Lite; and
    • pending $2.83 billion acquisition of Cobham Mission Systems.
  • Astellas in its $3 billion acquisition of gene therapy company Audentes Therapeutics, Inc. (Nasdaq: BOLD). 
  • Emergent BioSolutions in its:
    • $735 million acquisition of Adapt Pharma and its flagship product, NARCAN; and
    • $270 million acquisition of PaxVax.
  • AstraZeneca in its:
    • $600 million acquisition of Actavis’ branded respiratory business in the U.S. and Canada;
    • $1.26 billion acquisition of Ardea Biosciences (Nasdaq: RDEA);
    • up to $4.3 billion acquisition of Bristol-Myers Squibb's interests in the companies’ diabetes alliance in initial consideration and regulatory, launch and sales-related payments;
    • approximately $3.5 billion strategic diabetes alliance with Bristol-Myers Squibb in connection with BMS’s acquisition of Amylin Pharmaceuticals, including assistance in structuring agreements for the acquisition and operation of Amylin’s diabetes business by AZ and BMS;
    • acquisition of AlphaCore Pharma by MedImmune, AstraZeneca's biologic arm; and
    • $325 million divestiture of assets relating to Myalept.
  • Salix Pharmaceuticals in its:
    • $2.6 billion acquisition of Santarus, Inc. (Nasdaq: SNTS); and        
    • $300 million acquisition of Oceana Therapeutics, Inc.
  • Aristocrat Technologies in its:
    • $990 million acquisition of Big Fish Games, Inc.; and 
    • $1.28 billion acquisition of Video Gaming Technologies.
  • Boehringer Ingelheim in its:
    • $880 million sale of Fort Dodge; 
    • $300 million sale of its sterile injectables generics business (Bedford Laboratories); and
    • acquisition of certain animal health products divested in connection with the Pfizer-Wyeth merger.
  • Takeda in its acquisition of Intellikine, Inc. for $190 million upfront and up to $120 million in additional potential clinical development milestone payments.
  • Abbott Laboratories in its:
    • up to $400 million acquisition of Optimedica;
    • $410 million acquisition of Evalve, Inc., a medical device developer, by Abbott Vascular; and
    • $3.7 billion acquisition of Kos Pharmaceuticals, Inc. (Nasdaq: KOSP).
  • Eli Lilly in its:
    • acquisition of SGX Pharmaceuticals, Inc. (Nasdaq: SGXP), a San Diego-based biotechnology company; and
    • divestiture of its Tippecanoe manufacturing facility to Evonik Industries.
  • The Procter & Gamble Company in its 50/50 joint venture with Inverness Medical Innovations, Inc. for the development, manufacturing, marketing and sale of existing and to-be-developed consumer diagnostic products in a transaction valued at $650 million.
  • Eisai Co., Ltd. and Eisai Inc. in the:
    • $130 million acquisition of rights to Zonegran(TM) (zonisamide), an anti-epileptic drug, held by Elan Corporation, plc;
    • acquisition of four oncology drugs for $205 million from Ligand Pharmaceuticals Inc.;
    • divestiture of Gliadel to Arbor; and
    • Morphotek, Inc., a subsidiary of Eisai Inc., in the acquisition of certain assets relating to a proprietary tumor targeting platform from TransMolecular, Inc.

Pro Bono

  • Represented a non-profit, non-partisan policy organization dedicated to engaging young adults in the political process.
  • Advised a non-profit in various consulting and services arrangements.

Memberships and Affiliations

  • Law360, former Member of the Mergers & Acquisitions Editorial Advisory Board
  • Named as one of  "Top 25 Most Influential Women in Mid-Market M&A" by Mergers & Acquisitions magazine (2021, 2019, 2015)
  • LMG Life Sciences, Americas - "M&A Attorney of the Year" (2020)
  • The Deal, "Healthcare, Pharma & Biotech Dealmaker of the Year" (2020)
  • The Deal, “Top Women in Dealmaking” (2021)
  • The National Law Journal, "Outstanding Women Lawyers" (2015) 
  • Named as "Best in Mergers & Acquisitions" by Euromoney Legal Media Group, Americas Women in Business Law Awards (2014)
  • Chambers USA, Corporate/M&A & Private Equity (2014-2020)
  • Washington DC Super Lawyers, Mergers & Acquisitions (2019-2020)
  • National Law Journal, D.C. Deal Maker of the Year (2013)
  • LMG Life Sciences, “Life Science Star” (2012-2019)
  • Legal 500 US
    • Leading Lawyer in M&A: Large deals ($1B-$5B) (2014)
    • M&A: Large deals ($1B-$5B) (2012-2017)
    • M&A: Commercial Deals and Contracts (2016-2017)
    • Healthcare: Life Sciences (2013-2014)
    • Media, Technology and Telecoms (2014)