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Clifford Chance
Bridget Costello

Bridget Costello

Associate

Associate
Bridget Costello

Bridget Costello advises public and private companies on cross-border and domestic mergers, acquisitions and dispositions (including carve-out transactions), joint ventures and corporate reorganizations.

Bridget's experience spans a range of industries including insurance, healthcare, pharmaceuticals, energy and resources, and technology. 

  • Acted for Elanco Animal Health Incorporated, a U.S. pharmaceutical company and global leader in animal health, in the sale of its aqua business to Merck Animal Health for $1.3 billion in cash.*
  • Acted for Elevance Health, Inc., one of the nation's largest health benefits companies in its terminated proposed acquisition of Blue Cross and Blue Shield of Louisiana (BCBSLA), a Louisiana mutual insurance company.*
  • Acted for Aramco, one of the world's largest integrated energy and chemical companies, in its acquisition of Valvoline Inc. global products business for US$2.65 billion, subject to customary post-closing adjustments.*

*Maters prior joining Clifford Chance

News and client work

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Contact details

Career & qualifications

  • Queensland University of Technology, Bachelor of Laws 2017
  • Queensland University of Technology, Bachelor of Journalism 2017
  • Australian National University, Graduate Diploma of Legal Practice 2018
  • Admitted as a solicitor in Queensland, Australia 2018
  • Admitted as an attorney-at-law in New York 2024
  • Joined Clifford Chance 2025