Informa Purchased Event Organizer Clarion for $2.96 Billion
The deal ends an acquisition freeze for the firm and expands its portfolio of large-scale trade shows.
Updated on Oct. 6, 2026 in Corporate Finance

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Informa has reached an agreement to acquire event organizer Clarion for an enterprise value of £2.24 billion, or $2.96 billion. This acquisition marks the end of a prior pause on company purchases by Informa.
Why it matters
By acquiring Clarion, Informa gains control of the Defence and Security Equipment International (DSEI) event series. This move signals a shift back to growth through consolidation for the firm following a period of paused expansion.
The deal carries an enterprise value of £2.24 billion, or $2.96 billion. This acquisition serves as the first major transaction for Informa after the company maintained a period of paused acquisitions.
The players
Informa
A multinational events and academic publishing group that operates a large portfolio of trade shows and professional content platforms.
Clarion
An international event organizer known for managing high-profile trade exhibitions like the Defence and Security Equipment International series.
The details
Informa and Clarion have spent several months finalizing the deal, which first emerged in summer 2026. The acquisition integrates Clarion's event portfolio—including the global DSEI series—directly into Informa's existing operations. The transition process is designed to result in a fully combined entity by 2027.
Timeline
The potential deal first emerged during the summer of 2026.
Informa formally announced the acquisition on October 6, 2026.
The companies expect to operate as one business by 2027.
Market Landscape
This transaction marks a departure from Informa's recent pause on dealmaking, positioning the firm to absorb major international exhibition assets. It follows the pattern of industry consolidation observed during 2026 as global event operators move to capture market share in defense and trade.
Operators in the events space should monitor how this consolidation affects vendor pricing and trade show participation terms for the DSEI series. Integration of these two firms by 2027 will likely reshape competitive bidding for venue and logistics contracts in major hubs.
The takeaway
Large-scale M&A often creates significant shifts in the cost structure of major event series for participating exhibitors. Keep a close watch on the combined entity's 2027 rate cards and updated logistics requirements as the operational merger reaches completion.
Further reading
For more on industry-wide shifts, see our analysis of Corporate Finance.
Source note: This article includes information reported by Aviation Week.
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