London-based independent event producer, CloserStill Media, has secured a majority stake in Ai4, the largest AI event in the U.S. This marks CloserStill’s second major deal in Q1 of 2025. Earlier this year, the company acquired Digital Health Intelligence (DHI), incorporating DHI’s flagship event, Rewired, into its growing healthcare portfolio.
Background on Ai4:
Founded in 2018 by Michael Weiss and Marcus Jecklin, Ai4 was later joined by industry veteran Michelle Troop in 2019. The event is a key platform for organizations leveraging AI to drive innovation and transformation. It attracts AI and machine learning experts, IT leaders, business executives, and decision-makers from Fortune 500 companies, covering the entire AI value chain, from infrastructure to applications.
CloserStill Media’s Growing Global Reach:
CloserStill Media is renowned for its content-driven B2B events catering to professional communities. With operations in the U.K., U.S., Germany, Spain, and Singapore, the company runs events in the business technologies, healthcare, and future transport sectors across the U.S., Europe, and Asia.
Ai4’s acquisition will enhance CloserStill’s presence in North America, adding its Tech Week series to the company’s portfolio. The deal marks CloserStill’s first major technology event in the U.S., further strengthening its position in the global market.
“We are absolutely thrilled to welcome Ai4 Las Vegas into our U.S. portfolio,” said Yancy Weinrich, President of CloserStill North America. “This acquisition is a pivotal step in expanding our tech portfolio. We look forward to collaborating with Michael, Michelle, and Marcus, whose expertise and vision will play a key role in Ai4’s future growth.”
Expansion and Upcoming Plans:
Ai4’s next conference will be held from August 11-13, 2025 at the MGM Las Vegas, with future editions scheduled to move to The Venetian Las Vegas in 2026. The 2025 event is expected to attract over 8,000 delegates, 250+ exhibitors, and 600+ speakers across 50+ conference tracks. A new 1-to-1 meeting and networking program will also be introduced.
Additional Acquisitions:
In addition to Ai4, CloserStill Media also acquired a majority stake in Partnership Network Events (PNE) Ltd and Elite Exhibitions in 2024. PNE is known for organizing cruise ship design trade shows in the U.S. and Europe.
With these acquisitions, CloserStill Media continues to strengthen its global portfolio, positioning itself as a major player in the event production and technology sectors.