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Highlights
Rio Tinto Ltd reaches a multimillion-dollar settlement over historical disclosure matters
Turquoise Hill class action resolves allegations around Oyu Tolgoi project updates
Court approval pending for terms covering claims and legal expenses
Mining major Rio Tinto Ltd (ASX:RIO), listed on the ASX 50 and All Ordinaries, has reached a major settlement resolving a long-running securities class action lawsuit involving Turquoise Hill Resources Ltd (TSX:TRQ). The matter relates to the Oyu Tolgoi copper-gold project located in Mongolia and spans statements issued between mid-2018 and mid-2019.
The agreement addresses claims filed in the United States, finalising a case tied to corporate disclosures made during a critical project development phase.
Claims Centre on Undisclosed Project Cost Escalations and Delays
The lawsuit was brought forward by shareholders of Turquoise Hill, represented by a capital management firm, with the core allegation being that both Turquoise Hill and Rio Tinto misrepresented the status of the Oyu Tolgoi expansion. Official statements during the referenced period maintained that the development was tracking on plan and within budget.
However, legal filings suggest that internal knowledge of significant delays and material cost increases was not publicly shared in a timely manner. These discrepancies formed the foundation for the class action, which has now reached a preliminary resolution.
Settlement Avoids Lengthy Litigation Despite No Admission of Fault
While the settlement includes no admission of liability, Rio Tinto and its former subsidiary have opted to conclude the case to avoid extended litigation. Included in the settlement are terms covering legal costs and other related expenses. The outcome addresses shareholder grievances dating back several years and concludes a period of uncertainty for both entities.
A key figure named in the case, the former chief executive officer of Rio Tinto, is also covered by the terms of the resolution. The settlement awaits approval from a U.S. District Court judge before implementation can proceed.
Wider Industry Implications for Disclosure Standards
The finalisation of this case arrives after Rio Tinto’s acquisition of the remaining interest in Turquoise Hill, completed previously to streamline project oversight. As a result, Rio Tinto assumed full control of the Oyu Tolgoi development.
This legal closure may serve as a broader touchpoint for transparency and governance expectations across the mining sector. While the project continues to face operational complexities, the litigation component has reached its endpoint through this agreement, drawing attention to how disclosure standards are scrutinised in large-scale international developments.
