Tamr raises $21m growth equity led by Volition Capital

Tamr raises $21m growth equity led by Volition Capital

14 October 2026: Tamr, which sells an AI-native master data management platform, has raised $21 million in growth equity. Volition Capital, a Boston growth equity firm, led the round, and existing investors took part.

Not yet independently verified. The lead investor republishes a PR Newswire release; Tamr headquarters and its earlier funding are not stated in it, and the SaaS revenue growth is the company's own claim without a base figure. We will update this when it can be confirmed, and remove this note.

The company says it more than doubled its SaaS revenue in its previous fiscal year, but gives no base figure. The announcement is datelined Boston and does not state where Tamr is headquartered.

What Tamr sells

Master data management, or MDM, is the work of reconciling the same customer, product or location as it appears across many systems into a single trusted record. Tamr says its platform unifies, cleans and enriches fragmented enterprise data to give AI, decision-making and revenue growth a single source of truth. It describes its approach as machine learning and AI agents working under human oversight.

The release names four parts of the product:

• Curator Hub, for agentic data curation that pairs AI agents with human expertise;
• "Bring Your Own Agent", a low-code way to plug in a customer's own agents;
• multi-domain mastering, covering products, locations and custom entities;
• an enterprise knowledge graph that finds relationships between entities.

Tamr says it holds 19 patents in AI and machine-learning mastering, clustering and data curation.

Where the money goes

The company says it will put the funds into product innovation and into expanding agentic data mastering, in particular data curation and delivering context to AI systems, and into scaling its AI and operational infrastructure.

Anthony Deighton, Tamr's chief executive, says in the release: "As enterprises put AI to work across more of their operations, data quality and reliability become non-negotiable."

Tomy Han, a partner at Volition, says: "Enterprise AI programs stall most often at the data layer."

Customers and origins

Old Mutual is the one customer the release names. Its Group Chief Technology and Data Officer, Dhesen Ramsamy, says: "we chose Tamr with its AI-native approach as our group's real-time MDM platform." The company lists insurance, financial services, healthcare, life sciences, manufacturing, technology, retail and higher education as the sectors it serves.

Tamr was co-founded in 2013 out of research at MIT's Computer Science and Artificial Intelligence Laboratory. Its co-founders include Michael Stonebraker, winner of the 2014 ACM A.M. Turing Award, and Andy Palmer, now chairman, along with Alex Pagan, who is chief technology officer, Ihab Ilyas, Daniel Bruckner and George Beskales.

The investor

Volition Capital describes itself as founded in 2010, with more than $2.6 billion of assets under management and investments in more than 60 companies, mainly founder-owned businesses in software, internet and consumer sectors.

Company profile on TrustList: Tamr

Update, 22 October 2026: ITBrief reported on 19 October that Tamr raised $21 million in growth equity led by Volition Capital with existing investors, matching the figures above.

Related on TrustList:

• BioStack raises $9.5m to turn hospital records into medical AI data

Sources

• Volition Capital: Tamr secures $21 million in growth equity investment led by Volition Capital, 14 October 2026
• ITBrief: Tamr raises USD $21 million to expand AI data tools - 19 October 2026