Marex Group plc has completed its acquisition of UK equity market maker Winterflood Securities, enhancing its UK cash equities business and expanding its client base and capabilities. In a related move, Marex has agreed to sell Winterflood's custody business, Winterflood Business Services $(WBS)$, to Epiris Fund III, advised by Epiris LLP. The sale of WBS, which provides outsourced dealing, settlement, and custody services, is expected to complete in the second quarter of 2026. Marex will retain Winterflood's market making and corporate broking activities, along with associated employees and the Winterflood brand. Annual revenue for the retained Winterflood business is expected to be around $75 million, with an improved adjusted profit before tax margin anticipated over time.