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. Early life. Siemiatkowski's parents moved to Uppsala from Poland in the 1980s. He was born on 3 October 1981 in Sweden but his older sister was born in Poland. Siemiatkowski considers himself as a second generation immigrant.
https://en.wikipedia.org/wiki/Sebastian_Siemiatkowski
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. Early life. Siemiatkowski's parents moved to Uppsala from Poland in the 1980s. He was born on 3 October 1981 in Sweden but his older sister was born in Poland. Siemiatkowski considers himself as a second generation immigrant.
