Compliance from day zero and beyond
Europe's biggest players in finance and fintech rely on Fourthline to solve their KYC and compliance needs with proprietary AI technology and proven expertise.
Compliance from day zero and beyond
Europe's biggest players in finance and fintech rely on Fourthline to solve their KYC and compliance needs with proprietary AI technology and proven expertise.
Fourthline at a glance
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100% compliance
Fully compliant with applicable laws and regulations, such as GDPR and all local AML directives.
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Millions of KYC checks
Fourthline’s AI-driven platform authenticates millions of identities for top banks and fintechs at an industry-leading 99.98% accuracy rate.
Unmatched expertise
An international team of 240+ Fourthliners works across our Amsterdam headquarters and Barcelona office to build and deliver world-class digital identity solutions.
Fourthline at a glance
100% compliance
Fully compliant with applicable laws and regulations, such as GDPR and all local AML directives.
Millions of KYC checks
Fourthline’s AI-driven platform authenticates millions of identities for top banks and fintechs at an industry-leading 99.98% accuracy rate.
Unmatched expertise
An international team of 240+ Fourthliners works across our Amsterdam headquarters and Barcelona office to build and deliver world-class digital identity solutions.
Our story
For regulated enterprises with digital identity challenges, Fourthline offers a bank-grade identity stack and unmatched expert guidance. Our mission is to fight financial crime. We protect the global financial system by building innovative solutions that leverage artificial intelligence and enable our clients to be compliant with ease. We share a love for building customer-centric products with a positive impact on the world.
Our story
For regulated enterprises with digital identity challenges, Fourthline offers a bank-grade identity stack and unmatched expert guidance. Our mission is to fight financial crime. We protect the global financial system by building innovative solutions that leverage artificial intelligence and enable our clients to be compliant with ease. We share a love for building customer-centric products with a positive impact on the world.
Join our team
At Fourthline, we take pride in safeguarding the global financial system with the most advanced and thorough fraud prevention technologies available.
We're growing rapidly and we need your passion and expertise. Join us today in the fight against financial crime!
Join our team
At Fourthline, we take pride in safeguarding the global financial system with the most advanced and thorough fraud prevention technologies available.
We're growing rapidly and we need your passion and expertise. Join us today in the fight against financial crime!
Fourthline leadership
Krik Gunning
Co-Founder & Chief Executive Officer
Krik started his career as an M&A banker at ABN AMRO, then co-founded advisory boutique IvyRoads before joining Safened as chief commercial officer in 2015. In 2017, Krik co-founded Fourthline and now serves as CEO.
Chris van Straeten
Co-Founder & Chief Risk Officer
Chris started his career as a chartered accountant. He was Executive Vice President at ABN AMRO, serving as Chief Auditor for the Netherlands. Chris co-founded Fourthline in 2017.
Fleur de Roos
Chief Operating Officer
Fleur is a corporate lawyer with extensive experience in the financial services industry. Before joining Fourthline, she was a partner at the law firm Legalloyd and worked as a senior policy advisor for the Dutch Financial Regulator.
Ralph Post
Chief Technology Officer
Ralph joined Fourthline's founding team in 2017 after working as a technical director in the maritime industry. Prior to that, he was an IT strategy consultant for Accenture with a focus on financial services, high tech, and utilities.
Jesse Weststrate
Chief Revenue Officer
Jesse started his career at ABN AMRO, then joined Fourthline in 2016 and served as VP Product during the company’s early scale-up phase. He now leads Fourthline’s GTM organization and long-term client partnerships.
Krik Gunning
Co-Founder & Chief Executive Officer
Jesse started his career at ABN AMRO, then joined Fourthline in 2016 and served as VP Product during the company’s early scale-up phase. He now leads Fourthline’s GTM organization and long-term client partnerships.
Fourthline leadership
Krik Gunning
Co-Founder & Chief Executive Officer
Krik started his career as an M&A banker at ABN AMRO, then co-founded advisory boutique IvyRoads before joining Safened as chief commercial officer in 2015. In 2017, Krik co-founded Fourthline and now serves as CEO.
Chris van Straeten
Co-Founder & Chief Risk Officer
Chris started his career as a chartered accountant. He was Executive Vice President at ABN AMRO, serving as Chief Auditor for the Netherlands. Chris co-founded Fourthline in 2017.
Fleur de Roos
Chief Operating Officer
Fleur is a corporate lawyer with extensive experience in the financial services industry. Before joining Fourthline, she was a partner at the law firm Legalloyd and worked as a senior policy advisor for the Dutch Financial Regulator.
Ralph Post
Chief Technology Officer
Ralph joined Fourthline's founding team in 2017 after working as a technical director in the maritime industry. Prior to that, he was an IT strategy consultant for Accenture with a focus on financial services, high tech, and utilities.
Jesse Weststrate
Chief Revenue Officer
Jesse started his career at ABN AMRO, then joined Fourthline in 2016 and served as VP Product during the company’s early scale-up phase. He now leads Fourthline’s GTM organization and long-term client partnerships.
You're in good company
Enterprises around the world trust Fourthline to authenticate customer identities and drive business growth.
Committed to helping build a safer, more accessible global financial system
We believe in a world where businesses across banking, fintech, insurance, and beyond use modern technology to authenticate honest customers quickly, remotely, and securely.Fourthline solves complex digital identity challenges with advanced AI technology and expert regulatory guidance that enables enterprises to be compliant with ease.
We help clients across the globe sidestep the inefficiencies of in-house customer authentication processes with tailor-made solutions that deliver unparalleled fraud detection and conversion rates.Fourthline is on a mission to revolutionize digital identity management, and we're just getting started.
Committed to helping build a safer, more accessible global financial system
We believe in a world where businesses across banking, fintech, insurance, and beyond use modern technology to authenticate honest customers quickly, remotely, and securely.Fourthline solves complex digital identity challenges with advanced AI technology and expert regulatory guidance that enables enterprises to be compliant with ease.
We help clients across the globe sidestep the inefficiencies of in-house customer authentication processes with tailor-made solutions that deliver unparalleled fraud detection and conversion rates.Fourthline is on a mission to revolutionize digital identity management, and we're just getting started.
Want to learn more?
Discover how we can help you solve mission-critical identity challenges in a tailored way.
Want to learn more?
Discover how we can help you solve mission-critical identity challenges in a tailored way.
Solutions
Solutions
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.