Middesk

KYCO: Know Your Company

Reveal Profile

28 October 2025

1) Overview of the Service Provider

Middesk is a leading business identity platform that enables financial institutions, fintechs, and other B2B companies to verify, onboard, and monitor business customers through automated Know Your Business (KYB) processes. Founded in 2019 and based in San Francisco, the company provides identity-as-a-service APIs that deliver real-time business verification, risk assessment, and compliance solutions to streamline customer onboarding and reduce fraud.

The platform serves over 500 customers across fintech, banking, lending, marketplace, insurance, and payroll sectors, including notable clients such as Plaid, Affirm, Brex, Mercury, Bluevine, Rippling, and Novo. Middesk distinguishes itself by maintaining direct data connections to all 50 Secretary of State offices, the IRS, and hundreds of federal, state, and local government agencies, enabling verification of 100% of registered U.S. businesses with data refreshed within days rather than months.

The company’s core products include Verify for comprehensive business verification and KYB compliance, Signal for real-time risk scoring, TIN Match for tax identification validation, Assess for credit evaluation, and Tax Registration for payroll tax setup automation. Middesk’s platform processes over 5 million business onboarding decisions annually, helping customers achieve auto-approval rates of up to 75% while maintaining strict compliance standards.

Positioned against legacy data providers like Dun & Bradstreet and LexisNexis, Middesk competes on data freshness, accuracy, and user experience, targeting the growing market demand for modern business verification infrastructure. The company has raised $77 million in funding from top-tier investors including Sequoia Capital, Accel Partners, Insight Partners, and Y Combinator, with a current valuation of $760 million. Industry recognition includes placement on Forbes’ 2024 Fintech 50 list, Fast Company’s 2025 World’s Most Innovative Companies, and the top 20% of Inc. 5000’s fastest-growing private companies.

2) History

Middesk was founded in December 2018 by Kyle Mack and Kurt Ruppel, both former colleagues at Checkr, where they experienced firsthand the challenges of business verification. The company emerged from the founders’ recognition of a critical gap in the market: while consumer identity verification was well-established, the process for establishing trust between the 30 million businesses in the U.S. was inefficient and fragmented.

The founding team brought complementary expertise to the venture. Mack previously served as Director of Strategic Sales and Solution Consulting at Checkr, overseeing go-to-market strategy as the company grew from 5 to 300 employees and raised $150 million. Ruppel contributed technical leadership as an engineering manager at Checkr, having previously worked as a senior software engineer at Zendesk. Their combined experience in the background check industry revealed the acute need for automated business verification solutions.

Middesk participated in Y Combinator’s Winter 2019 batch after applying in October and receiving acceptance in November 2018. The company began operations in December 2018, focusing initially on building direct access to federal, state, and local government data sources to create a comprehensive business identity platform.

Early product development centered on three core verification services: Tax ID and Name Verification through direct IRS integration, Secretary of State Filings verification across all 50 states, and Website Validation for assessing business legitimacy. By 2020, the platform had demonstrated significant market traction, with the company’s Identity product powering decisions for over 200,000 businesses seeking access to financial products and processing more than 50,000 businesses applying for PPP loans during the pandemic.

The company achieved several key milestones in its first few years. In March 2021, Middesk launched its Agent product for payroll tax registration, expanding beyond verification into entity management services. By 2022, the platform was serving 350 customers, including major financial institutions and fintech companies. The company’s growth trajectory accelerated significantly, with Business Verification volume experiencing substantial year-over-year increases and Order volume growing at more than twice that rate.

Throughout 2023 and 2024, Middesk expanded its product suite with new offerings including Signal for real-time business risk scoring, Address Risk Insights for fraud detection, and Web Analysis for comprehensive online presence evaluation. The company has maintained its focus on serving the growing market of new business formations, with annual U.S. business applications reaching record levels of over 5 million per year.

3) Key Executives

Kyle Mack is CEO and Co-Founder of Middesk, having established the company in December 2018 alongside Kurt Ruppel. Based in New York, Mack brings extensive experience from his previous role as Director of Strategic Sales and Solution Consulting at Checkr, where he oversaw go-to-market strategy as the company grew from 5 to 300 employees and raised $150 million. He holds a bachelor’s degree in economics from Concordia University and is a graduate of Y Combinator’s Winter 2019 batch. Mack also serves as a Sequoia Scout at Sequoia Capital, supporting early-stage founders and their ventures.

Kurt Ruppel serves as Co-Founder and Chief Technology Officer of Middesk. Ruppel holds a degree in Cognitive Science from the University of Berkeley and brings significant technical leadership experience from his role as engineering manager at Checkr, where he enhanced customer experience within Checkr products. Prior to Checkr, he worked as a senior software engineer at Zendesk for two years starting in 2012. Ruppel’s technical expertise has been instrumental in building Middesk’s platform that provides direct access to federal, state, and local government data sources.

Matt Tarantino holds the position of Head of Finance at Middesk. He is described as a senior finance leader with extensive finance, treasury, and accounting experience. Tarantino brings expertise in financial management and strategic planning to support Middesk’s growth trajectory and funding initiatives.

Jackie Wylie serves as Head of Marketing at Middesk. She leads the company’s marketing initiatives and brand positioning as Middesk expands its market presence in the business identity verification space.

Drew Singer is Head of Product at Middesk, responsible for product strategy and development across the company’s suite of business verification and identity solutions. Singer plays a key role in expanding Middesk’s product offerings and ensuring they meet customer needs in the evolving compliance and risk management landscape.

Kenyon Cory holds the role of Head of People at Middesk. Cory oversees human resources functions and talent management as the company continues its rapid growth, having doubled its headcount multiple times since its founding.

Sam Matthew serves as In-House Counsel at Middesk. Matthew joined as the company’s first in-house legal counsel and has taken on responsibilities including leading webinars on beneficial ownership and other compliance topics. He provides legal guidance on regulatory matters and compliance issues relevant to Middesk’s business identity platform.

Sheena Jain currently serves as Fractional General Counsel at Middesk. She has diverse legal experience including previous roles as Acting General Counsel and Legal Advisor at Start-Up Counsel, General Counsel and Chief Compliance Officer at Orum.io, and various positions at Stripe in Legal, Financial Partnerships, and Risk. Jain holds a Bachelor of Arts degree from UC Berkeley and a Juris Doctor from Villanova University Charles Widger School of Law.

4) Ownership

Middesk maintains a private company structure with ownership distributed across multiple investor classes and employee stakeholders. The company has raised $77 million across three primary funding rounds since 2019, establishing a diverse ownership base that includes prominent venture capital firms and strategic investors. As a private entity, Middesk does not trade publicly and maintains control over its equity distribution through carefully structured funding arrangements.

The ownership structure reflects multiple share classes established through sequential funding rounds. Series B preferred shares, issued in June 2022, represent the most recent and likely largest ownership category following the $57 million funding round. Series A preferred shares were created through the March 2021 $16 million round, while earlier seed funding established initial equity positions. The cap table also includes multiple Series A sub-classes (A-1 through A-4) with varying liquidation preferences and conversion ratios, indicating sophisticated structuring to accommodate different investor entry points and risk profiles.

Insight Partners and Canapi Ventures served as co-lead investors in the Series B round, securing significant ownership stakes alongside participation from existing investors Sequoia Capital, Accel, and Gaingels. Sequoia Capital led the Series A round and participated in the seed round, establishing a substantial position across multiple funding cycles. Y Combinator, which accepted Middesk into its Winter 2019 batch, maintains an ownership position from the early-stage investment. Additional investors include individual angel investors, with Rich Wong identified as the primary angel investor in the company.

The current valuation of $760 million, established during the July 2022 Series B round, provides the framework for ownership percentages across different share classes. The Series B round pricing at $34.01 per share with 1,676,071 shares outstanding demonstrates the premium valuation achieved by the company. Earlier Series A shares were priced at $3.15 per share, reflecting the significant appreciation in company value between funding rounds. The complex share structure includes various liquidation preferences, with most classes carrying 1x non-participating preferred rights and 6% cumulative dividend rates.

Employee ownership represents a significant component through equity compensation programs, though specific percentages are not publicly disclosed. The company has doubled its headcount multiple times since founding, suggesting substantial employee equity grants to attract and retain talent in the competitive fintech sector. As Middesk continues scaling toward its goal of serving over 1 million businesses, the ownership structure provides the capital foundation and investor expertise necessary to support this ambitious growth trajectory.

5) Legal Claims and Actions

In March 2025, Middesk filed a lawsuit against competitor Osiris Ratings, Inc. (d/b/a Baselayer) and former employees in the U.S. District Court for the Southern District of New York. The complaint alleged misappropriation of trade secrets, including confidential product plans and proprietary data, in violation of the Defend Trade Secrets Act. The litigation included a temporary restraining order and expedited discovery proceedings.

The case concluded by August 2025 through a stipulated dismissal and a permanent injunction that restrained the defendants from using or disseminating Middesk’s confidential information. This legal dispute highlighted concerns about intellectual property protection and competitive intelligence threats within the business identity verification industry.

Apart from this trade secrets litigation, no other material legal claims, regulatory proceedings, disciplinary actions, fines, settlements, or notable litigation involving Middesk or its executives have been identified in available public records. This absence of additional regulatory proceedings is consistent with Middesk’s business model as a technology platform providing business verification services, which operates outside the scope of traditional financial services regulations that typically generate enforcement actions.

6) Recent Media Coverage

Media coverage of Middesk from 2023 to 2025 has been largely positive, focusing on strategic partnerships, product innovation, and significant industry accolades, balanced by coverage of the notable legal dispute concerning trade secrets. The company has actively published announcements regarding new platform capabilities and integrations aimed at strengthening its position in the Know Your Business (KYB) and risk management sectors. Executive commentary, particularly from CEO Kyle Mack, has also featured in discussions on AI’s role in fraud prevention and the impact of evolving financial regulations.

The most significant legal development involved the lawsuit Middesk filed against competitor Osiris Ratings, Inc. (d/b/a Baselayer) and former employees in March 2025. Filed in the U.S. District Court for the Southern District of New York, the complaint alleged misappropriation of trade secrets, including confidential product plans and proprietary data, in violation of the Defend Trade Secrets Act. The litigation, which included a temporary restraining order and expedited discovery, concluded by August 2025 through a stipulated dismissal and a permanent injunction that restrained the defendants from using or disseminating Middesk’s confidential information.

Middesk consistently announced strategic partnerships to expand its ecosystem. In 2024, the company integrated with Certa to enhance third-party risk management and with AI-risk platform Oscilar to improve business onboarding. It partnered with engagement banking platform Backbase in October 2024 to boost KYB verification for financial institutions. This continued into 2025 with collaborations with digital origination platform ATTUNE in January and AI compliance firm Greenlite in June to accelerate lending and due diligence workflows. Similar partnerships were formed in 2023 with Rutter, Sandbar, and Hummingbird to embed Middesk’s data into lending, risk monitoring, and compliance platforms.

Product innovation was a key theme, with launches aimed at combating sophisticated business fraud. In October 2024, Middesk introduced Signal, a real-time tool that generates a risk score on a business’s legitimacy in under a second. This was followed by the December 2024 release of Address Risk Insights, a feature designed to detect high-risk business addresses associated with fraudulent activities.

The company garnered substantial positive recognition for its growth and innovation. In 2025, Middesk was named to Fast Company’s list of the World’s Most Innovative Companies and the top 20% of the Inc. 5000 list of fastest-growing private companies. This followed its 2024 debut on the Forbes Fintech 50 list. Additional honors included being named to Inc.’s Best Workplaces list for 2025 and Notable Capital’s 2024 SMBTech 50 list.

7) Strengths

Direct Government Data Integration

Middesk’s most significant competitive advantage lies in its direct connections to authoritative government data sources, including all 50 Secretary of State offices, the IRS, and hundreds of federal, state, and local government agencies. This direct access enables verification of 100% of registered U.S. businesses with data that is refreshed within days rather than months, providing customers with the most current and accurate business information available. Unlike legacy competitors that rely on outdated third-party data sources, Middesk’s first-party government integrations eliminate data latency issues and ensure 92% of business records are updated within 10 days.

Superior Data Quality and Freshness

The platform maintains exceptional data quality standards through its comprehensive data acquisition strategy that combines authoritative government sources with alternative data points to create the most complete business dataset on the market. With coverage of over 160 million business profiles and data from more than 140 distinct sources, Middesk provides unparalleled completeness and accuracy in business verification. This data quality advantage enables customers to achieve auto-approval rates of up to 75%, significantly higher than what legacy providers can deliver.

Advanced Technology Platform and User Experience

Middesk’s modern API and user-friendly dashboard represent a significant technological advancement over legacy data vendors, providing customers with intuitive tools for business verification and risk assessment. The platform’s developer-friendly architecture enables rapid integration, with most customers able to implement solutions within days rather than weeks. The introduction of innovative products like Signal, which delivers comprehensive business risk scoring in under a second, demonstrates Middesk’s commitment to technological leadership in the business identity space.

Proven Auto-Approval Rate Improvements

Customer case studies consistently demonstrate Middesk’s ability to dramatically improve auto-approval rates across different industry segments, with documented improvements ranging from 20% to 50% increases in automated business onboarding decisions. One major fintech customer achieved an increase in auto-approval rates from 40% to over 75% within the first year of partnership, while a top-five national bank achieved a 46% auto-approval rate representing a 25% improvement over their previous solution. These performance improvements translate directly to reduced operational costs and enhanced customer experience.

Comprehensive Risk Intelligence Capabilities

The platform’s AI-powered risk models identify patterns predictive of compliance, fraud, and credit risks that are unique to Middesk’s extensive database of business relationships. Features like Address Risk Insights leverage a proprietary database of over 40,000 registered agents to identify high-risk addresses commonly associated with fraudulent schemes, providing customers with risk intelligence capabilities unavailable elsewhere in the market. The Web Analysis product automates the traditionally manual process of reviewing business online presence, saving compliance teams 15-20 minutes per business review while improving consistency and accuracy.

Industry Recognition and Market Validation

Middesk has received significant industry recognition that validates its market position, including placement on Forbes’ 2024 Fintech 50 list, Fast Company’s 2025 World’s Most Innovative Companies, and ranking in the top 20% of Inc. 5000’s fastest-growing private companies. The company serves two of the nation’s three largest banks, over 100 regional banks and credit unions, and more than 500 customers across fintech, banking, lending, and marketplace sectors. This broad customer adoption across different market segments demonstrates the platform’s versatility and effectiveness in addressing diverse business verification needs.

8) Potential Risks and Areas for Further Due Diligence

Trade Secrets Protection and Competitive Intelligence Vulnerabilities

The March 2025 trade secrets litigation against competitor Osiris Ratings highlights Middesk’s vulnerability to intellectual property theft and competitive intelligence threats. While the company successfully secured a permanent injunction, the incident demonstrates that Middesk’s proprietary information and product development plans remain attractive targets for competitors seeking unauthorized access to confidential data. The legal dispute involved allegations of misappropriation of trade secrets, including confidential product plans and proprietary data, indicating the high value and sensitivity of Middesk’s intellectual property assets. Organizations should evaluate the robustness of Middesk’s internal information security controls, employee access management, and trade secret protection protocols.

Data Security and Cybersecurity Risk Exposure

As a business identity platform handling sensitive government data from Secretary of State offices, the IRS, and other federal agencies, Middesk faces significant cybersecurity risks that could compromise client verification processes and expose confidential business information. The company’s extensive data acquisition strategy, which includes direct connections to over 140 government and alternative data sources, creates multiple potential attack vectors that sophisticated threat actors could exploit. Given the 2025 cybersecurity landscape showing a 47% year-over-year increase in weekly cyber attacks and the prevalence of supply chain compromises affecting similar data-driven platforms, Middesk’s security infrastructure requires continuous evaluation. The company’s SOC 2 Type II compliance provides baseline assurance, but the evolving threat environment demands ongoing assessment of advanced persistent threat defenses and incident response capabilities.

Business Continuity and Single Points of Failure

Middesk’s direct integrations with government data sources, while providing competitive advantages, create potential single points of failure that could disrupt client operations. The company’s reliance on IRS systems for TIN verification has already demonstrated this vulnerability, with documented outages requiring retry queues and fallback procedures. During IRS system downtime, businesses experience verification delays that can impact customer onboarding and approval processes. Organizations should assess Middesk’s business continuity planning, redundancy measures, and alternative verification pathways to ensure service reliability during government system disruptions or other operational incidents.

Rapid Growth and Scaling Challenges

The company’s aggressive growth trajectory, including plans to triple headcount and process over 5 million business onboarding decisions annually, creates scalability risks that could impact service quality and operational stability. Middesk’s expansion from serving 350 customers in 2022 to over 500 customers while maintaining data freshness standards of 92% of businesses updated within 10 days presents significant operational challenges. The pressure to maintain direct government data connections across all 50 states while scaling customer volume could strain infrastructure and compromise the data quality advantages that differentiate Middesk from competitors. Due diligence should examine the company’s capacity planning, infrastructure investment strategies, and quality control measures during rapid expansion phases.

Regulatory Compliance and Government Relations Dependencies

Middesk’s business model fundamentally depends on maintaining direct access to government data sources, creating regulatory and political risk exposure that could impact service delivery. Changes in government data access policies, privacy regulations, or state-level restrictions on data sharing could significantly affect Middesk’s competitive positioning and operational capabilities. The company’s comprehensive coverage of Secretary of State offices requires ongoing relationships with multiple government entities, each with distinct policies and potential for regulatory changes. Organizations should evaluate Middesk’s government relations strategy, regulatory compliance monitoring, and contingency planning for potential restrictions on data access or changes in government data sharing policies.

Vendor and Technology Concentration Risk

The company’s technology infrastructure and service delivery model may exhibit concentration risks through dependencies on specific cloud providers, data processing systems, or third-party integrations that could create operational vulnerabilities. As demonstrated by recent industry incidents affecting similar platforms, technology vendor failures or security breaches can cascade through service provider ecosystems, potentially impacting Middesk’s ability to deliver real-time verification services. The complexity of maintaining connections to over 140 data sources while ensuring consistent API performance requires robust vendor management and technology risk assessment processes. Due diligence should examine Middesk’s vendor diversification strategy, backup systems, and technology risk management practices to identify potential concentration risks that could affect service continuity.

Save as PDF