MoFo partner Rhys Bortignon participated in the ISDA Masterclass: Derivatives Documentation, speaking on a two-part panel on the documentation of uncleared derivatives, focusing on Credit Support Annexes for both variation margin (VM) and initial margin (IM). He discussed the types of CSAs and key margin requirements across the U.S. and EU/UK, including in-scope entities and transactions, core regulatory obligations, and practical resources such as ISDA’s Margin InfoHub. The sessions also addressed the structure and key provisions of VM and IM CSAs, highlighting important considerations for compliance and collateral management.