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Dimensional Fund Advisors Ltd. : Form 8.3 - RIO TINTO LTD - Ordinary Shares

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GLEN.LRIO.L
Medium Materiality6/10

Information

FORM 8.3 PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY A PERSON WITH INTERESTS IN RELEVAN...

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AI Summary

Dimensional Fund Advisors disclosed a 0.37% interest in Rio Tinto. They sold 1,181 and 1,919 ADR shares of Rio Tinto recently. Disclosure relates to both Rio Tinto PLC and Glencore PLC. The disclosure date was January 12, 2026. Dimensional disclaims beneficial ownership of the shares reported.

Sentiment Rationale

The 0.37% interest is relatively small and should not significantly affect RIO's price. Historical examples show minimal impact from similar position disclosures.

Trading Thesis

No immediate financial or operational changes indicated that would impact RIO's long-term outlook.

Market-Moving

  • Dimensional Fund Advisors disclosed a 0.37% interest in Rio Tinto.
  • They sold 1,181 and 1,919 ADR shares of Rio Tinto recently.
  • Disclosure relates to both Rio Tinto PLC and Glencore PLC.

Key Facts

  • Dimensional Fund Advisors disclosed a 0.37% interest in Rio Tinto.
  • They sold 1,181 and 1,919 ADR shares of Rio Tinto recently.
  • Disclosure relates to both Rio Tinto PLC and Glencore PLC.
  • The disclosure date was January 12, 2026.
  • Dimensional disclaims beneficial ownership of the shares reported.

Companies Mentioned

  • GLEN.L (GLEN.L)
  • RIO.L (RIO.L)

Others

Although Dimensional holds a disclosed position, the interest is small and general. Lacking major changes or positive news diminishes its potential impact.

Dimensional Fund Advisors Ltd. Discloses Position in Rio Tinto Ltd.

Date: January 12, 2026 | Source: GlobeNewsWire

Introduction to the Disclosure

Dimensional Fund Advisors Ltd. has filed a Form 8.3, publicly disclosing its position in the ordinary shares of Rio Tinto Ltd. (RIO). This disclosure represents an opening position indicating interests in relevant securities, as stipulated under Rule 8.3 of the Takeover Code.

Key Information on Dimensional Fund Advisors

  • Discloser: Dimensional Fund Advisors Ltd., acting on behalf of its affiliates.
  • Ownership Disclaimer: Dimensional explicitly disclaims beneficial ownership of the shares mentioned.
  • Offeror/Offeree: This disclosure pertains to Rio Tinto PLC.
  • Additional Disclosures: Positions also involve Glencore PLC.
  • Date of Position Held: January 9, 2026.

Positions in Relevant Securities

Dimensional Fund Advisors has reported the following interests in Rio Tinto:

  • Class of Relevant Security: Rio Tinto plc 10p ordinary shares (ISIN: GB0007188757)
  • Relevant Securities Owned: 4,633,584 shares, representing 0.37% of the company.
  • Voting Discretion: Dimensional does not have voting discretion over 280,951 shares included in this total.

Recent Dealings Related to RIO

In addition to disclosing its position, Dimensional has engaged in the following transactions involving Rio Tinto plc American Depositary Receipts:

  • Sales:
    • 1,181 shares at a price of USD 81.2050
    • 1,919 shares at a price of USD 81.3929

Additional Information on Shareholder Agreements

There are currently no indemnity agreements or arrangements that would compel Dimensional Fund Advisors to act (or refrain from acting) regarding RIO shares. Moreover, no formal agreements exist regarding voting rights or acquisition strategies associated with options or derivatives.

Contact Information and Further Disclosure

The disclosures have been made in compliance with the regulatory requirements established under the Takeover Code. For further inquiries regarding this disclosure or the Code’s stipulations, interested parties can contact:

Name: Thomas Hone

Phone: +44 20 3033 3419

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