Malaysia’s New Arbitration Funding Rules Follow Collapse of Therium-Backed Sulu Claim
Two Malaysian jurists have published a retrospective on the Sulu arbitration, drawing a direct line from the failure of the funded US$15 billion claim against Malaysia to the statutory framework the country has since built around third-party funding of arbitration.
As reported by The Edge Malaysia, the piece is written by Tan Sri Zainun Ali, a former Federal Court judge, and barrister J J Chan. They note that the claim brought by parties describing themselves as heirs of the Sultan of Sulu "was reportedly backed by third-party litigation funding, attributed in public reports to Therium Capital Management," on the usual basis that the funder would take a return if the claim succeeded.
It did not. The Paris Court of Appeal annulled the award in full on 9 December 2025, holding that no valid arbitration agreement capable of binding Malaysia existed. The claimants were ordered to pay Malaysia €200,000 in costs, and separately lost costs orders in proceedings before the Netherlands Supreme Court.
The legislative response is the part with the longest reach. Malaysia's Arbitration (Amendment) Act 2024 took effect on 1 January 2026 and, in the authors' description, "brings third-party funding of arbitration within a clear statutory framework," requiring disclosure of both the funding arrangement and the identity of the funder.
For funders, the sequence is instructive: a single high-profile enforcement campaign against a sovereign produced a disclosure regime that will now apply to every funded arbitration seated in the jurisdiction.










