SIX, Switzerland’s leading financial infrastructure operator, announced the immediate departure of Rafael Moral Santiago, who served as head of Securities Services and held a seat on the group’s management committee. The leadership change marks a significant transition for one of Europe’s major exchange operators as it navigates an evolving landscape in post-trade services and capital markets infrastructure.
Santiago held the Securities Services position for approximately one year before his departure became effective immediately. His tenure oversaw a critical business division responsible for settlement, custody, and related services that form essential components of SIX’s broader financial ecosystem. The division operates across multiple jurisdictions and serves institutional clients throughout Europe and beyond.
Interim Leadership Structure
Marion Leslie, currently director of Financial Information at SIX, will assume interim responsibility for the Securities Services business unit while the Zurich-based institution conducts a comprehensive search for a permanent replacement. Leslie’s appointment reflects confidence in her capability to manage the division during the transition period, though her background in financial information services represents a somewhat different functional focus than securities operations.
The timing of Santiago’s departure and the company’s decision to maintain interim leadership rather than immediately promoting from within suggest potential deliberation regarding the division’s strategic direction. SIX has not publicly disclosed reasons for the departure or circumstances surrounding the leadership change.
Market Infrastructure Context
The Securities Services division represents a cornerstone of SIX’s operations, encompassing post-trade infrastructure that settlements trades and manages custody arrangements for institutions operating across Swiss and European markets. The division’s operational continuity carries significance not only for SIX’s commercial performance but also for the broader functioning of regional capital markets infrastructure.
SIX operates as a vertically integrated financial services provider, combining exchange operations, clearing, settlement, and data services under unified ownership—a structure that distinguishes it from some peer operators in other European jurisdictions. This integrated model requires careful coordination across divisions, making leadership transitions within critical business units noteworthy for market participants.
European Regulatory Environment
The leadership change occurs within a broader context of evolving regulatory expectations for exchange operators and post-trade service providers across the European Union. While SIX operates primarily in Switzerland, it maintains significant interconnections with EU markets and remains subject to various international regulatory frameworks governing financial infrastructure.
European regulators have increasingly focused on operational resilience, cybersecurity, and clearing efficiency in recent years. The Securities Services division operates at the intersection of these regulatory priorities, managing settlement processes that must maintain continuous functionality while meeting stringent risk management standards.
SIX has not announced specific timelines for identifying a permanent successor to Santiago. The interim arrangement with Leslie demonstrates the company’s ability to maintain operational continuity while conducting what may prove to be a selective recruitment process for a role combining technical expertise in securities operations with strategic influence at the management committee level.