Image: Kassia Lewis-Deboos

Kassia Lewis-Deboos

Associate, Corporate Department


Phone: 44-020-3321-1020
Fax: 44-020-3321-1120


Kassia Lewis-DeBoos is an associate in the Global Finance practice of Paul Hastings and is based in the firm's London office. Ms. Lewis-DeBoos' practice focuses on domestic and cross-border leveraged and acquisition financings. She has broad experience advising both creditors and debtors on a range of debt capital structures, including for private equity sponsors and borrowers. Prior to joining Paul Hastings, Ms. Lewis-DeBoos worked at a world-leading private equity and credit firm.


  • Recognised as a member of the "Loan Team of the Year" at the IFLR Europe Awards 2023.
  • Recognised as a member of the “Finance Team of the Year” at the Legal Business Awards 2022 in London


  • BPP University Law School, Legal Practice Course, 2019
  • University of Bristol, Law LLB, 2015


  • Advised the senior arrangers and funds in relation to the financing for Advent International’s £2.67 billion, public-to-private acquisition of Ultra plc.
  • Assisted in advising 12 banks and five funds on a first and second lien financing package of c.€1.45 billion for Advent’s purchase of Caldic BV and its contemporaneous merger with GTM.
  • Advised Abry Partners on its acquisition of Aker Systems, a UK-based cloud computing company.

Practice Areas

Leveraged & Syndicated Lending

Global Finance




England and Wales Solicitor


BPP University Law School, L.P.C. 2019

University of Bristol, School of Law, LL.B. 2015

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