How Duna Transforms Business Verification: The Stripe Alumni Startup Securing €30M Series A

Duna, a German-Dutch fintech startup, has just announced a major milestone: securing €30 million in Series A funding. The round was led by CapitalG, the growth investment arm of Alphabet, marking a significant bet on how the company is reimagining business identity verification. What makes this funding round particularly interesting isn’t just the capital amount, but the constellation of investors backing the venture—many of whom come from Stripe and its competitor Adyen, revealing how fintech’s most successful operators see the future of business onboarding.

The funding reflects a broader trend in Silicon Valley and beyond: many of the most innovative fintech founders carry Stripe in their DNA. Daniela Amodei of Anthropic and Gregory Brockman of OpenAI both worked at Stripe before launching their AI ventures. Now, Duna is becoming the most well-capitalized European startup to emerge from what some call the “Stripe mafia”—the network of ambitious founders who cut their teeth at the payments company before striking out on their own.

From Stripe Roots to Building the Future of Business Identity

Duna was founded by Duco Van Lanschot and David Schreiber, both former Stripe employees. Rather than taking the traditional next step—joining another payments company or launching yet another consumer fintech app—the two identified a critical gap in how businesses verify other businesses.

The company’s investor roster reads like a who’s who of payments industry veterans. Beyond CapitalG’s lead, notable backers include Stripe’s own Chief Operating Officer Michael Coogan, former Chief Technology Officer David Singleton, and former Chief Operating Officer Claire Hughes Johnson. Even more striking: executives from Stripe’s main rival, Adyen, are backing Duna. This includes Adyen’s Chief Risk and Compliance Officer Mariëtte Swart and CFO Ethan Tandowsky.

Such broad-based support from across the industry suggests something important: Duna has tapped into a problem that even the largest payments processors acknowledge they cannot solve efficiently themselves.

The Core Problem: Enterprise Onboarding at Scale

Duna operates in the Know Your Business (KYB) sector—the technology landscape focused on verifying that other companies are who they claim to be. This might sound like a narrow niche, but it touches one of the most expensive and error-prone processes in fintech: onboarding corporate customers.

When a fintech platform like Plaid, a lending service, or any B2B financial product wants to add a new business client, they must navigate complex identity verification and fraud prevention checks. These processes are time-consuming, repetitive, and often lead to customer churn when companies abandon the process out of frustration.

Duna’s insight is deceptively simple: why should every platform verify the same business information independently? The company is building the infrastructure to allow business identity data—once verified—to be reused across multiple services and platforms.

Why Competitors Aren’t Replicating This Model

You might expect Stripe or Adyen to simply build this functionality internally. But according to Van Lanschot, the economics don’t work. The level of customization required for different use cases—a bank’s onboarding process differs vastly from a lending platform’s, which differs again from a marketplace’s—means creating a one-size-fits-all business verification tool offers limited value.

This insight is crucial: Duna isn’t competing directly with Stripe or Adyen because the problem it’s solving requires domain-specific expertise and flexibility that these larger platforms cannot efficiently provide. Instead of viewing Duna as a threat, major players recognize it as a complementary solution to their own infrastructure.

Creating a “Digital Passport” for Businesses

Duna’s longer-term vision extends far beyond simplifying individual onboarding processes. The company is working toward what Van Lanschot describes as creating a global business identity network—essentially a “digital passport” for companies.

Imagine this scenario: A business completes rigorous identity verification while opening a bank account. That verified identity could then be instantly recognized and accepted by investment platforms, B2B marketplaces, and financial services—without requiring the company to re-verify every time. This is the network effect Duna is building toward.

The parallel Van Lanschot draws is instructive: Visa and Mastercard didn’t just process individual transactions; they created entire trust infrastructures that enabled commerce at scale. Duna aspires to do something similar for business identity.

The Investment Logic: Network Effects and Defensibility

Alex Nichols, the CapitalG partner who led the Series A, articulated why this vision attracted institutional capital. In his assessment, Duna represents something rare: a company attacking a foundational problem with a unique approach.

“Most KYB competitors aggregate data from existing sources,” Nichols noted (in spirit). “Duna is building its own authoritative data layer.” This distinction matters enormously. By generating original data rather than relying on incomplete third-party information, Duna is constructing what could become a defensible moat.

Nichols also values another quality in Duna’s founders: they possess deep domain insight into a problem that isn’t widely recognized outside the industry. Van Lanschot and Schreiber didn’t need to conduct extensive market research—they lived inside this problem at Stripe.

Competing startups like Jumio and Veriff are also active in the KYB space, but their approaches differ from Duna’s. The distinction between building authoritative data and aggregating existing information is precisely what separates a commodity business from a network-building one.

Existing Investors Doubling Down

Duna’s Series A follows earlier validation from experienced venture firms. Index Ventures led the €10.7 million seed round in May 2025, establishing itself as an early believer. For the Series A, Index Ventures joined alongside other returning backers: Puzzle Ventures and Frank Slootman, the executive chairman of Snowflake, who participated as an individual investor.

The fact that early investors were willing to participate again at a higher valuation signals confidence not just in Duna’s early traction but in the foundational nature of the problem the startup is addressing.

Targeting “Patches of Networks” for Accelerated Growth

While Duna’s ultimate ambition involves a globally connected business identity network, the company recognizes that such transformation happens gradually. To accelerate adoption before network effects reach critical mass, Duna is employing a focused strategy: targeting what the team calls “patches of networks.”

These are small, densely connected groups of companies where network effects can materialize quickly. Manufacturing sectors with shared supply chain partners are one example. Private equity syndicates with overlapping investor bases are another. Financial or regulatory clusters within small countries represent a third.

Within these tight-knit communities, the value of reusable business verification becomes apparent immediately. A company verified once can work with multiple partners in the same ecosystem without redundant checks. This creates urgent demand for Duna’s solution even before a truly global network exists.

The Scale of Opportunity in Smaller Markets

To illustrate the market potential, Van Lanschot points to the Netherlands—a relatively small country by GDP. The four largest Dutch banks collectively employ approximately 14,000 people in compliance and risk functions. Half of these professionals focus on business clients and their onboarding processes.

While Duna won’t overnight displace these compliance teams, AI-enhanced verification tools can meaningfully reduce costs while improving speed. In an era where regulatory complexity continues rising, the economic pressure to adopt more efficient verification systems is immense. Even in smaller markets, the compounding impact across banks, financial platforms, and B2B services represents a substantial opportunity.

The One-Click Future of Business Onboarding

If Duna successfully executes its vision and becomes the trusted foundation for business identity, the long-term outcome could be transformative: one-click onboarding for enterprises.

For consumers, Amazon demonstrated the power of one-click checkout. For B2B transactions, imagine if a business could access new financial services, marketplaces, or banking relationships with a single authentication step—because their identity had already been verified and trusted across the network.

Stripe itself pioneered B2B payment simplification through products like Stripe Link. Duna’s mission is to tackle the prerequisite layer beneath transactions: establishing trust in who the businesses are in the first place.

The journey from Stripe’s internal challenges to a standalone business identity network reflects a familiar pattern: experienced operators at industry leaders spot problems their employers either can’t or won’t solve efficiently, then build independent companies to address them. Duna represents the latest—and possibly most ambitious—example of this dynamic playing out in fintech.