Filing Signals

Source: SEC EDGAR Compiled 2026-09-14 08:28 UTC All 21 checks passing

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RIO TINTO LTD

CIK 887028 RTNTF·Mining · All EDGAR filings ↗

Material weakness high Filing comparison

RIO TINTO LTD reported a material weakness in internal control

Internal control reported effective Material weakness in internal control

The Board, supported by the Audit & Risk Committee, has completed its annual review of the effectiveness of our risk management and internal control framework. This review included consideration of our material financial, operational, reporting and compliance controls along with improvements made to the framework during the year. During the year, management identified a material weakness in internal control over financial reporting for the purposes of compliance with the Sarbanes-Oxley Act. No corrected or…
Evidence
Current state
material_weakness
Current state label
Material weakness in internal control
Direction
newly reported
Prior filed
2025-02-20
Prior form
20-F
Prior state
effective
Prior state label
Internal control reported effective
Remediation stated
No
Severity
high
Source
Item 9A internal control conclusion, compared with the prior filing
Why
The company's conclusion on internal control over financial reporting changed: a material weakness was newly reported, or a previously reported one no longer appears.