Altha BV (a Dutch limited liability company) is the holding company for Joost de Valk & Marieke van de Rakt. Marieke and Joost made their money by building up Yoast. They’ve sold Yoast in 2021, Altha holds all of their investments.

Marieke van de Rakt

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Marieke obtained her Ph. D. in social sciences at the Radboud University in Nijmegen, specializing in criminology. She went on to teach and consult in several institutions before joining her husband Joost at Yoast, where she was the CEO for 3 years until the end of 2021. After successfully selling Yoast she became Yoast’s Creative Marketing Manager.

Joost de Valk

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Joost is the Founder of Yoast and currently its Chief Product Officer. Before founding Yoast he had a career in several digital marketing agencies in the Netherlands. He’s been consulting on SEO for more than 15 years, with a leading role on some of the largest SEO projects in the world.