The Polish subsidiary of hydrogen bus developer Arthur Bus has filed for insolvency, dealing a setback to the company’s plans to begin customer deliveries of its Arthur H2 Zero model, according to Polish media reports cited by industry outlets.
Arthur Bus GmbH, founded in Munich in 2021, had planned to manufacture hydrogen-powered buses in Lublin, eastern Poland, through its local unit Arthur Bus sp. z o.o. The insolvency filing was submitted on Nov. 26, 2025, before the first customer vehicles were delivered, despite the Arthur H2 Zero being unveiled in 2022.
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The company was established by co-founder and former chief executive Philipp Glonner alongside entrepreneur Gerhard Mey, with the stated ambition of becoming a “system manufacturer for mobility solutions.” Arthur Bus drew early attention at the Bus2Bus trade fair in Berlin in 2022, where Glonner said the firm aimed to scale production using primarily German capital while expanding its product range to include articulated hydrogen buses and battery-electric variants.
Those plans have now been disrupted by the collapse of the Polish unit, which reportedly halted production at its Lublin facility. Industry portal Busplaner, citing Polish outlet Transport Publiczny, said the factory has been inactive for weeks and that employees have not been paid for several months.
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The insolvency has placed existing customers in an uncertain position. Orders include three hydrogen buses from German transport company Buspunkt and a larger contract from the city of Lublin for 20 vehicles. The Lublin order was to be supported by funding from Poland’s National Fund for Environmental Protection and Water Management, which is set to expire within months if the buses are not delivered or a replacement order is not secured.
Transport Publiczny reported that the Arthur H2 Zero was based on the Ursus Citysmile platform rather than being a fully in-house design. Ursus, a Polish manufacturer, filed for insolvency in 2021, after which former Ursus manager Rafał Słomka joined Arthur Bus sp. z o.o. and became part of its management team.
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According to Transport Publiczny, the company’s difficulties were primarily financial rather than technical. “In 2023, the company recorded a loss of 6.6 million PLN, and in 2024, losses exceeded 19 million PLN. Nevertheless, it retained around 40 employees in Lublin (peaking at about 60), hoping to expand series production,” the outlet wrote.
Glonner left the company’s management board in October, according to his LinkedIn profile. Another senior hire, former Quantron marketing chief Martin Lischka, who joined Arthur Bus earlier in 2025, has since announced his move to Holon/Benteler. Arthur Bus has not publicly commented on the future of its German operations or the status of outstanding customer orders.