Marble raises a €6.5 million Series A led by Smartfin for open-source compliance AI against fraud and money laundering

Marble raises a €6.5 million Series A led by Smartfin for open-source compliance AI against fraud and money laundering

29 September 2026: Marble, a French compliance software company, announced on 29 September 2026 a €6.5 million Series A to make AI automation standard in how banks and fintechs fight fraud and financial crime. The company says the round brings its total funding to €9 million.

The round

According to Marble's announcement, the Series A is led by Smartfin, with participation from new investor ADNEXUS and increased support from existing investors Passion Capital, 42Capital and Hexa. The company says the money will go into making its product do more of the heavy lifting for the compliance teams that use it every day; press reports add embedding AI into compliance workflows and shortening deployment.

What the company does

Marble builds a platform for fraud and anti-money-laundering (AML) teams. It has an open-source core and lets compliance staff set and update their own transaction-monitoring rules without code, monitor in real time, investigate cases with a full view of the customer, and generate regulatory reports such as suspicious activity reports. It can be deployed on the customer's own infrastructure. The company says it is in production at more than 100 banks and fintechs in over 25 countries; founded in 2021, it says its aim is to make compliance AI affordable for teams that cannot build their own.

Why it matters for buyers

Compliance teams are being asked to handle more alerts with the same headcount, and regulators increasingly expect institutions to explain and tune their own monitoring rules rather than rely on a black box. An open-source core and on-premise deployment address two concerns banks often raise: lock-in and data residency. A funded vendor in this space also adds competition to large incumbent AML suites.

What to check

• Which detection rules and AI features are in the open-source core and which are paid.
• How models and rules are documented for your regulator, and how changes are audited.
• Deployment options and where data is processed.
• Integration with your core banking, payments and case-management systems.
• Reference customers of your size and in your jurisdiction.

Company profile on TrustList: Marble

Update, 19 October 2026: FrenchWeb reported the round on 30 September 2026, giving the same figures: a €6.5 million Series A led by Smartfin, with ADNEXUS and the existing investors Passion Capital and 42CAPITAL, bringing the Paris company to €9 million raised in total.

Related on TrustList:

• Complaion raises €13.5 million co-led by Italian Founders Fund and Eurazeo for AI-first ISO and NIS2 compliance for SMEs
• Ireland puts B2B eInvoicing into law, with Peppol as the default network

Sources

• Marble: Marble raises €6.5M Series A to make compliance AI automation the norm, not the exception - 29 September 2026
• FrenchWeb: Marble lève 6,5 millions d’euros pour rendre la conformité financière programmable - 29 September 2026
• FrenchWeb: MARBLE lève 6,5 millions d'euros pour rendre la conformité financière programmable - 30 September 2026