S4 Capital plc

S4 Capital plc is a tech-led digital advertising, marketing, and technology services company founded in 2018 by Sir Martin Sorrell and headquartered in London, England. It operates as a public limited company focused on building a purely digital business that serves global, multinational, regional, local clients, and millennial-driven influencer brands through integrated offerings in content, data & digital media, and technology services. Emphasizing 'faster, better, more efficient' executions in an always-on consumer-led environment, S4 Capital plc initially combined with MediaMonks, a leading creative digital content production firm, and MightyHive, a top digital media solutions provider. Since then, it has integrated over 25 companies, evolving in 2021 by merging these into Media.Monks as its operational brand, and further simplifying in 2024 into Marketing Services and Technology Services under the Monks name. With approximately 7,000 employees, S4 Capital plc partners with innovative tech brands, DTC, and B2B companies to create stories, interfaces, experiences, and digital transformations, holding a significant role in the fast-growing digital advertising sector.