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Diogo Casqueiro

Senior Associate

Diogo advises on a wide range of cross border leveraged finance deals across the credit spectrum.

In addition to mainstream leverage finance transactions, Diogo’s work focuses on private credit as well as the crossover between infrastructure finance and leveraged finance. Diogo’s capabilities are also complemented by his experience in M&A and R&I (distressed situations).

In addition to his capabilities under English law transactions, Diogo is also experienced under Portuguese and Luxembourg laws, furthering his ability to bridge the demands of cross border transactions and to liaise with legal counsel across jurisdictions.

The clients advised by Diogo (which include arrangers, underwriters, lenders, alternative credit providers and other financial institutions) value his responsiveness, technical ability and commercial advice. Clients also appreciate Diogo’s ability to devise creative solutions, consider different financing options and the impact of complex structures in the financing strategy. He is constructive with a view to ensuring smooth execution of deals.


Representative matters

The financiers supporting TPG Capital’s acquisition of DOC Generici, a leading manufacturer of generic pharmaceuticals in Italy, from ICG and Merieux Equity Partners.

A syndicate of 15 bank underwriters and four private credit providers supporting Cinven’s takeover offer to acquire Synlab, a German headquartered provider of human and veterinary laboratory services and environmental analysis across Europe.

A syndicate of banks in connection with the proposed acquisition of a stake in Vantage Towers AG, a leading telecoms tower company in Europe, from Vodafone GmbH by a consortium of funds led by Global Infrastructure Partners and KKR.

A bank club on the EUR 1.5bn equity bridge financing in connection with the proposed acquisition by a private equity consortium of a leading telecoms tower company in Europe.

A bank syndicate on the EUR 200mn build-to-suit and roll-up data centre development financing arranged for a leading private equity and infrastructure sponsor. First ever data centre financing papered on leveraged finance terms.



Published Work

  • Diogo Coimbra Casqueiro (2021) “Credit funds and the STS Regulation: a case of regulatory overlap?” in RDFMC, 3 (2021), no. 11, p. 765-797,      
  • Diogo Coimbra Casqueiro (2021) “Do usufruto de ações e da adstrição ao cumprimento da obrigação de efetuar prestações acessórias ou suplementares” in RDS, XI (2019), 3-4, p. 575-625, Coimbra: Almedina
  • Diogo Coimbra Casqueiro (2020) “Da Renovação de Deliberações dos Sócios”, Coimbra: Almedin

Speaking Engagements

  • Speaker, The Licensing Principle and P2P Lending, CIDP – Fintech Regulation and the Licensing Principle, June 2022
  • Speaker, Audit and Reform of PIE Regulation, CIDP – The Future of European Company Law, October 2021



Luxembourg, 2016 (inactive)

Advogado, Portugal, 2014  


Master’s Degree, Law, Portuguese Catholic University’s School of Law, 2016

Bachelor’s Degree, Law, Portuguese Catholic University’s School of Law, 2011


English, French, Portuguese, Spanish
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.