Today, Atlas Arteria Group (ASX: ALX) shareholders received details of a formal off‑market takeover offer from Diamond Infraco 1 Pty Ltd, a subsidiary of IFM Global Infrastructure Fund, at a premium price of $4.75 per security – increasing to $5.10 per security if the bidder's interest surpasses 45% before the offer closes.

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What did Atlas Arteria report?
- The cash offer is for all fully paid stapled securities not already owned by Diamond Infraco 1 Pty Ltd.
- The initial offer price of $4.75 per security is a 9.7% premium to the last close and up to 19% higher than recent trading averages.
- The offer will automatically increase to $5.10 per security if the bidder increases its relevant interest to 45% before the offer ends.
- If the offer is accepted and becomes unconditional, payment will be made within one month of acceptance or 21 days after the offer period ends.
- Bidders currently hold 34.48% of Atlas Arteria securities.
What else do investors need to know?
Diamond Infraco 1 is making the offer to give Atlas Arteria investors the option to sell for cash at a premium. The highest possible offer price of $5.10 per security is "best and final", meaning it will not be raised even if market conditions change, unless a competing proposal from another party emerges.
The bidder highlighted Atlas Arteria's recent strategic shift toward potentially equity-funded acquisitions as a key concern, preferring instead a focus on operational improvements over further mergers or acquisitions. Security holders are also reminded that accepting the offer carries no stamp duty and, in most cases, no brokerage.
What's next for Atlas Arteria?
Investors now have until the close of the offer period to decide whether to accept the proposal. Diamond Infraco has already cleared major regulatory hurdles, including Australian, European, French and German approvals.
Should Diamond Infraco achieve 90% ownership, it intends to move toward full compulsory acquisition of remaining shares and possibly delist Atlas Arteria from the ASX. In any case, investors should consider their own strategic view as well as the premium to recent trading offered.
Atlas Arteria share price snapshot
Over the past 12 months, Atlas Arteria shares have declined 14%, trailing the S&P/ASX 200 Index (ASX: XJO) which has risen 10% over the same period.