Our people
Siobhán Hallissey

Siobhán Hallissey is a director for CSC Global Financial Markets. She’s responsible for providing clients with governance and compliance guidance on a variety of deal types covering a wide asset base managed from establishment through to dissolution. She acts as a director to client entities with a focus on corporate governance and company secretary services.
Prior to joining CSC, Siobhán worked with the international governance team of Western Union, managing the corporate governance aspects of its regulated and unregulated international subsidiaries. She also worked for Intertrust, where she coordinated and managed pan-European securitisation and structured finance transactions from a governance, compliance, and administrative perspective, including review of legal documentation, as well as dealing with client requests for a portfolio of companies.
Siobhán is a qualified ICSA-chartered company secretary and associate member of ICSA, the Governance Institute, and also holds a professional diploma in corporate governance.
Siobhán holds an honours Bachelor of Commerce degree from the University College Cork.