Michael Cassau

Overview
Michael Cassau is a German entrepreneur best known as the founder of Grover, the Berlin-based technology-subscription and rental platform that reached unicorn status in 2022. He founded the company in 2015 and led it as chief executive during its growth into one of Europe's most visible consumer-technology rental businesses.
Why this entity matters
Grover popularised a subscription model for consumer electronics, letting users rent devices such as smartphones and laptops on flexible monthly terms instead of buying them. Under Cassau the company became one of a cluster of Berlin unicorns and a widely cited example of the "access over ownership" trend in European consumer technology.
Career, company, or institutional background
Cassau studied law at Heidelberg University and worked within the Rocket Internet company-building network and at Goldman Sachs before founding Grover in 2015. The company scaled across Germany and into additional markets, building a large rental fleet financed through a mix of equity and asset-backed debt.
Role in the startup, technology, investment, or innovation ecosystem
Grover reached unicorn status in April 2022, raising roughly €101 million in equity alongside about €203 million in debt financing at a valuation of around one billion US dollars. Cassau served as chief executive until 2023, when he stepped down from the CEO role while remaining associated with the company's board; former chief operating officer Linda Rubin was later appointed CEO. A 2024 financing round reduced the company's valuation to below one billion dollars. In 2024 Cassau founded SKROL, a Miami-based, AI-driven platform focused on acquiring and transforming small and medium-sized businesses, which he leads as founder and CEO.
Selected relationships and affiliations
Cassau built Grover with a leadership team that later included Linda Rubin, and his SKROL venture has drawn in former Grover colleagues. His early career connects him to the Rocket Internet network of Berlin company builders.
Startuprad.io relevance
As the founder of a German technology-subscription unicorn, Cassau is part of the DACH founder landscape that Startuprad.io covers.
Public source context
Publicly available information on Cassau includes his https://www.crunchbase.com/person/michael-cassau , alongside company information published by Grover and SKROL.

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