Sebastian Siemiatkowski

Sebastian Siemiatkowski
Siemiatkowski in 2019
Born (1981-10-03) 3 October 1981
Sweden
EducationStockholm School of Economics
OccupationCEO of Klarna

Sebastian Siemiatkowski (also spelled Sebastian Siemiątkowski; born 3 October 1981) is a Swedish entrepreneur who is the co-founder and chief executive officer of fintech company Klarna. In 2022, his net worth was estimated at $3.2 billion as Klarna's valuation increased although he is (as of 2025) no longer a billionaire.

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