Sebastian Siemiatkowski
Swedish entrepreneur (born 1981)
Sebastian Siemiatkowski
Sebastian Siemiatkowski (Polish spelling 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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