Sebastian Siemiatkowski

Klarna Group plc Sebastian Siemiatkowski

Co-Founder, CEO & Director, Klarna Group plc (KLAR)

Why it matters

The CEO view

Co-founded Klarna in Stockholm in 2005 as a Stockholm School of Economics student and has run it through a banking licence, a $45.6bn private mark, an 85% markdown and a New York listing. Best known for pushing Klarna from buy-now-pay-later into a credit-card challenger, and for an AI rollout that cut headcount from roughly 6,000 to 3,000 before he publicly reversed part of it.
@klarnaseb
On the record with shareholders

Earnings calls

  1. Q2 2026 Aug 18, 2026 Siemiatkowski led with the growth ladder Klarna wants to be judged on — volume +18%, revenue +27%, transaction margin dollars +42%, operating costs +16% — and only then handed over the guidance cut, which he attributed to a softer German consumer and FX. He used the call, not the release, to disclose that CFO Niclas Neglén and CMO David Sandström both hand over in early 2027, framing it as "an early heads up, not a goodbye", and said the CFO search is for a New York-based hire because the US is already Klarna's largest market by revenue if not by volume. On product, he argued the network is under-penetrated in its own base: of more than a million merchants accepting Klarna, only about 250,000 offer Fair Financing. Read the call · 5 quotes →
In their own words

Podcasts, interviews & articles

10 recorded appearances

2026

From the frontier: Lessons from Klarna's ambitious AI rollout
Talk Charter Leading with AI Summit · Feb 11, 2026 · 22 min

From the frontier: Lessons from Klarna's ambitious AI rollout

Concedes the AI push went too far — "I had to pay a lot for saying that. People were very angry with me" — and describes the correction: AI supporting humans as VIP treatment, including hiring Klarna's own customers as remote part-time contractors.

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2025

Inside Klarna's IPO CEO Sebastian Siemiatkowski
Podcast Sourcery with Molly O'Shea · Sep 12, 2025 · 1h 0m

Inside Klarna's IPO CEO Sebastian Siemiatkowski

Recorded at the NYSE: says Klarna was burning about $100m a month and swung to $1-2m of monthly profit within two years, and frames the company as an attack on the $1.2tn US credit-card market rather than a BNPL business.

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