S4 Ventures

S4S Ventures is a venture capital firm founded in 2022 as a joint venture between Sir Martin Sorrell's S4 Capital and Stanhope Capital Group. The firm focuses on investing in early-stage technology companies that are disrupting the marketing, media, and advertising ecosystems. Its primary investment areas include marketing technology (Martech), advertising technology (Adtech), data technology, creative technology, and emerging digital media or content. S4S Ventures leverages the operational expertise and global network of S4 Capital and Monks to support its portfolio companies in scaling and accelerating adoption. The firm is headquartered in New York and operates with a global investment mandate.