KUALA LUMPUR – The corporate landscape in Sarawak is witnessing a tense legal showdown between Cahya Mata Sarawak Berhad (CMS) and its non-independent and non-executive director Datuk Seri Mahmud Abu Bekir Taib. At the centre of the dispute are claims over boardroom influence, financial transparency, and alleged breaches of corporate duty.
Since early 2025, Mahmud maintains his fight for greater transparency and his right to participate in leadership, while CMS has countered with serious allegations of misconduct and fiduciary breaches. Currently, Mahmud remains locked out from attending board room meetings with the company.
Here is an overview of the five principal cases currently before the High Court as of May 2026:
Quest for financial transparency (Case A)
Mahmud has initiated an Originating Summons to scrutinise CMS’s financial records.
What it’s about: Mahmud is seeking the legal authority to inspect the accounts of CMS and five of its subsidiaries.
Current Status: The court will clarify or issue a final decision on July 13, 2026.
Main suit over alleged conspiracy (Case B)
CMS is pursuing a defensive strategy against Mahmud and his associates.
What it’s about: CMS and another party allege that Mahmud, and former CMS chief information officer Karl Vink, and others conspired to harm the company and breached their fiduciary duties. The company asserts that Mahmud acted against its best interests.
Current Status: A court mention is scheduled for June 15, 2026 to track the filing of legal cause papers by the defendants.
Reclaiming a seat at the board table (Case C)
This case concerns Mahmud’s formal participation in company leadership.
What it’s about: Mahmud seeks a court declaration of his statutory right to attend Board of Directors meetings and has applied for an injunction to secure attendance while proceedings continue.
Current Status: Parties are to update the court on the status of affidavits on May 26, 2026.
Bid to pause the Derivative Action (Case D)
This suit was initiated by CMS against Mahmud to primarily object to Mahmud’s attempt to file a leave application for a derivative action.
What it’s about: Mahmud filed a Notice to the CMS Board which is the first step towards filing a derivative action as a shareholder on behalf of the company. CMS then filed this suit against Mahmud and also obtained an ex-parte injunction against Mahmud from further pursuing the derivative action.
Current status: The court ordered Mahmud to file a formal application to set aside the ex-parte order. Following exchange of affidavits, hearing of the inter partes is fixed for August 18, 2026. Meanwhile, the court granted an ad interim injunction pending disposal of the inter partes hearing.
Allegations of leaked confidential information (Case E)
CMS brought a suit against Mahmud and accused of mishandling sensitive company information.
What it’s about: Along with a suit accusing Mahmud of various breaches against the company, CMS had applied for an ex-parte injunction to prevent Mahmud and others from attending board meetings and from making statements to the media regarding the company, its subsidiaries, or ongoing proceedings. The application was opposed by Mahmud’s counsel. Judicial Commissioner Zaleha Mohd Yusuf, directed that the matter proceed to a full inter-partes hearing instead. The dispute traces back to boardroom tensions after Mahmud’s redesignation from deputy chairman to director on the board.
Current Status: The court held the inter-partes hearing on May 19, 2026. Mahmud must submit his affidavit by May 29, 2026, while Cahya Mata must file its reply by June 12, 2026. The next case management is scheduled for June 15, 2026. Cahya Mata was represented by Alvin Chong, and Satinder Singh Sandhu appeared for Mahmud.
These cases collectively underscore a high-stakes battle over corporate governance, transparency, and fiduciary responsibility in Sarawak’s largest listed company. – May 22, 2026