Sebastian Siemiatkowski


CEO and Co-Founder

In 2005, Sebastian Siemiatkowski co-founded Klarna in order to provide safe and smooth online payments. He currently serves as its Chief Executive Officer. He has overseen the company’s rapid global growth with Klarna now operating across 17 markets. Klarna is now a fully licensed bank with over 90 million active consumers and 250,000 merchant partners. He holds a master’s degree from the Stockholm School of Economics.

Event Sessions Featuring Sebastian Siemiatkowski

Fireside Chat

In conversation with Klarna's CEO Sebastian Siemiatkowski

AltFi Leadership Forum 2021 - Wednesday 12 May 2021

Articles Featuring Sebastian Siemiatkowski

The US is now Klarna’s biggest market

16th January 2023 | Amelia Isaacs

Klarna Australia reports losses of $56m last year

1st November 2022 | John Reynolds

Losses at Klarna tripled in the first half of 2022

1st September 2022 | Will McCurdy

Klarna has won over 10% of Irish shoppers

30th May 2022 | Oliver Smith

Klarna lays off approximately 10% of its staff

24th May 2022 | Amelia Isaacs

Meet Europe's fintech decacorns

1st February 2022 | John Reynolds

2021 in Fintech and Alternative Finance: Part 1

29th December 2021 | John Reynolds

Klarna launches in Ireland

9th November 2021 | Daniel Lanyon

AltFi Awards 2021: The Shortlist revealed!

3rd November 2021 | Daniel Lanyon

Klarna wants you to buy now, and pay now

18th October 2021 | Daniel Lanyon

Growth drive pushes Klarna to wider loss

27th August 2021 | Aisling Finn

Klarna chooses Madrid for new tech hub

26th May 2021 | Daniel Lanyon

Klarna eyes up London for upcoming IPO

19th May 2021 | Aisling Finn

Klarna adds 60,000 merchant partners

27th November 2019 | John Reynolds

How Klarna became Europe’s largest fintech?

12th August 2019 | Roger Baird

Snoop Dogg partners with fintech banking platform

19th January 2019 | Daniel Lanyon