Sebastian Siemiatkowski - Angel Investor Profile

Location: Stockholm, Sweden

Co-founder and CEO of Klarna. Angel investor in fintech and consumer payments.

Investment Focus & Industries

  • fintech
  • consumer
  • marketplace
  • saas
SS

Sebastian Siemiatkowski

Verified: Jun 2026 (SMTP Validated)👑 Lead Investor
Stockholm, Sweden
𝕏 Twitter/Xin LinkedIn
Check Size Range

Flexible Check Size

Preferred Stages
seedseries-a

Background & Investment Thesis

Co-founder and CEO of Klarna. Angel investor in fintech and consumer payments.

Focus Industries

fintechconsumermarketplacesaas

Notable Portfolio & Backed Deals

Klarna
AI Outreach Insight94% Match Score

Active investor in fintech, consumer, marketplace, saas. Highly responsive to concise pitches with clear traction metrics.

Sebastian Siemiatkowski - Angel Investor Profile | OpenAngels