Diana Billik


Diana is Regional Co-Head of US Capital Markets & Global ECM. She is a US securities partner resident in our Paris office.

Diana works on a broad range of cross-border securities matters and has deep experience in offerings of debt, equity and hybrid securities in established and emerging markets, as well as in liability management transactions. Diana represents issuers, arrangers and underwriters in relation to transactions by foreign private and sovereign issuers across numerous jurisdictions, including France, Sweden, Norway, Belgium, Turkey, Greece, United Arab Emirates and West Africa.

She focuses on SEC-registered and exempt offerings into the United States and compliance with SEC reporting and disclosure requirements for foreign issuers and security holders. Diana is admitted to practice in the State of New York and is a member of the Paris bar.

Diana joined the firm in 1998 and became a partner in 2007.


Representative matters

The initial purchasers on the multi-tranche USD 4.5 billion Rule 144A senior and hybrid bond issuances by Electricite de France. 

A leading Swedish financial services group on its US bond issuances. 

A leading Norwegian financial services group on its US debt issuance program and all issuances thereunder.

A leading Belgian financial services group on its debut Rule 144A bond issuances. 

Speaking Engagements

  • Co-Chair, Practising Law Institute’s Annual Institute on Securities Regulation in Europe, 2018 to 2024

Leadership Positions And Professional Affiliations

  • American Bar Association
Foreign expert for USA
Chambers Global, 2024 - (Capital Markets)
Band 4
Chambers Global, 2024 - (Capital Markets: Debt)



State of New York, 2000

Paris, 2011


J.D, Harvard Law School, 1998

Bachelor of Arts, Economics, Vassar College, 1994

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.