The ICC Just Made Funding Disclosure Mandatory. AAA and JAMS Are Watching.

On June 1, 2026, the ICC's new Arbitration Rules went into effect. Most of the commentary so far has focused on case management tweaks. The provision that should have every mass arb plaintiff firm's attention is the mandatory third-party funding disclosure requirement.

Here's why it matters even if you never file at the ICC: AAA and JAMS watch each other, and they both watch the ICC. When the largest international arbitration institution formalizes a rule, the domestic providers start drafting. If your firm uses litigation funding to underwrite mass arb campaigns (and most serious ones do), the question is not whether similar disclosure obligations arrive at AAA or JAMS. The question is whether your operations can produce the disclosure packet on demand when they do.

What the ICC Rule Actually Requires

The 2026 ICC Rules now require parties to disclose the existence and identity of any third-party funder at the outset of proceedings. This is not a "best practice" suggestion. It is a procedural obligation, and failure to comply gives the tribunal grounds to draw adverse inferences or impose cost consequences.

The rule was designed for international commercial disputes, but the logic applies directly to mass arbitration. In a matter with 8,000 individual claimants, a funder backing the campaign has a financial interest in every single one of those cases. Arbitrators want to know that. Opposing counsel wants to know that. And increasingly, the providers administering the cases want to know that, because it affects how they evaluate conflicts, assign neutrals, and manage fee collection.

Why This Is an Operations Problem, Not a Legal One

Most plaintiff firms treat funding agreements as a deal-level document. The partner signs it, the finance team tracks draws, and nobody thinks about it again until settlement allocation. That works fine in a world where nobody asks.

In a disclosure-mandatory world, you need to produce, for each claimant or batch of claimants:

• The identity of every funder with a financial interest in the outcome
• The nature of the funding arrangement (non-recourse advance, equity stake, hybrid)
• Any changes to the funding structure during the life of the matter

If you are running 5,000 claimants across three batches with two co-funders and a waterfall structure, that is not a five-minute memo. It is a data pull that touches your case management system, your funding agreement, your co-counsel arrangements, and potentially your claimant retainer disclosures.

The firms that will handle this effortlessly are the ones whose tech stack already tracks funding allocation at the claimant level. The firms that will scramble are the ones running funding data in a spreadsheet that lives on one paralegal's desktop.

The Domestic Signals Are Already There

AAA's 2024 mass arbitration rules introduced the Process Arbitrator role, which expanded the procedural authority of the neutral managing large-scale filings. JAMS followed with its own mass arbitration procedures. Both providers have been steadily increasing the administrative infrastructure around mass filings, adding screening stages, batch management, and fee tiers.

Funding disclosure fits neatly into that trajectory. The Process Arbitrator at AAA already has broad authority to manage pre-hearing logistics for mass filings. Adding a funding disclosure requirement to the Process Arbitrator's checklist would be a procedural footnote, not a structural overhaul.

On the defense side, there is active lobbying for funding disclosure in mass arb contexts. The U.S. Chamber's December 2025 report on mass arbitration specifically flagged third-party funding as a concern, arguing that funders drive filing volume and that disclosure would help arbitrators and providers assess the bona fides of bulk claims. Whether you agree with the Chamber's framing or not, the political pressure is real and it points in one direction.

What to Build Now (Before You Have To)

If your firm runs funded mass arb campaigns, here is the operational checklist that will save you pain later:

1. Centralize funding data in your case management system. Every claimant record should link to the funding agreement that covers it. If your funder covers claimants 1 through 4,000 and a second funder covers 4,001 through 7,500, that mapping should be queryable, not reconstructed from memory.
2. Version-control funding agreements. Amendments happen. Draws get restructured. Waterfall priorities shift. If you cannot produce the funding agreement as it existed on the date a specific batch was filed, you have a disclosure gap.
3. Build disclosure language into your retainer. The cleanest approach is to inform claimants at intake that their case may be supported by third-party funding and that the firm may be required to disclose the funder's identity to the arbitration provider. This is a paragraph, not a project, but it needs to be there before you need it.
4. Coordinate with co-counsel. In matters with multiple plaintiff firms, each firm may have its own funding arrangement. A disclosure obligation that applies to the "party" will sweep in every firm on the caption. Make sure you can produce a consolidated disclosure without a week of emails.
5. Audit your admin's data model. Your claims administrator holds claimant-level data. If the admin cannot tag claimants by funding source, you will be exporting data, cross-referencing it manually, and re-importing it. That is exactly the kind of workflow that breaks at scale.

The Competitive Angle

Firms that get ahead of this will have a quiet advantage. When a disclosure requirement drops (and it will), the firm that produces a clean, complete disclosure packet in 48 hours looks organized, credible, and ready. The firm that asks for a 30-day extension looks like it is hiding something, even if it is just disorganized.

In mass arb, credibility compounds. The Process Arbitrator who sees a clean disclosure from your firm in the first batch remembers that when your second batch arrives. The opposing counsel who gets a complete packet on day one has less room to argue that your claims are fabricated or funder-driven.

This is a pattern I see across mass arb operations: the firms that win are not the ones with the best legal arguments. They are the ones whose operations produce the right document, at the right time, without a fire drill. Funding disclosure is just the next document on that list.

I'm biased here. I built GroupSettle's stack to track claimant-level data precisely so that when a new procedural requirement lands, it is a query, not a project. But the principle applies regardless of which admin you use: if your claimant data lives in one place, with clean metadata, you can respond to whatever the providers throw at you. If it lives in six places, you are always one rule change away from a crisis.