# Sebastian Siemiatkowski

The European founders who’ve set up funds
Pro
List
September 11, 2026
The European founders who’ve set up funds
Nik Storonsky, Taavet Hinrikus, Daniel Ek: we list the founders who have set up funds
Freya Pratty
Klarna’s quarterly losses more than double amid IPO speculation
August 14, 2025
Klarna’s quarterly losses more than double amid IPO speculation
The buy-now-pay-later fintech is rebranding itself as a neobank
Tom Matsuda
Klarna CEO dials down AI ambitions with human hiring push
News
May 9, 2025
Klarna CEO dials down AI ambitions with human hiring push
Sebastian Siemiatkowski previously waxed lyrical about the benefits of AI in cutting costs and increasing operational efficiency
Tom Matsuda
Klarna power players: Meet the team steering the Swedish fintech’s IPO
Pro
Analysis
February 11, 2025
Klarna power players: Meet the team steering the Swedish fintech’s IPO
The Swedish buy now pay later fintech is set to IPO in April, according to latest reports
Tom Matsuda
Klarna CEO touts crypto ambitions ahead of IPO
News
February 9, 2025
Klarna CEO touts crypto ambitions ahead of IPO
Sebastian Siemiatkowski teased the company’s crypto plans on X, as the Swedish fintech looks set to go public at a $15bn valuation
Martin Coulter
How Klarna CEO spends his fortune taking big bets on fast-growing startups: 'We've made some investments we regret'
Pro
Interview
February 6, 2025
How Klarna CEO spends his fortune taking big bets on fast-growing startups: 'We've made some investments we regret'
The Siemiatkowskis’ little-known family office has been active since 2013 and lists ChatGPT and other AIs as staff members
Tom Matsuda

# Sebastian Siemiatkowski

The European founders who’ve set up funds

Klarna’s quarterly losses more than double amid IPO speculation

Klarna CEO dials down AI ambitions with human hiring push

Klarna power players: Meet the team steering the Swedish fintech’s IPO

Klarna CEO touts crypto ambitions ahead of IPO

How Klarna CEO spends his fortune taking big bets on fast-growing startups: 'We've made some investments we regret'