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Sebastian Siemiatkowski

Europe, Stockholms Lan, Sweden, Stockholm

Description

Sebastian Siemiatkowski is the Co-Founder and CEO of Klarna. Sebastian Siemiatkowski attended the Stockholm School of Economics.

Investor Profile

Sebastian Siemiatkowski has made 14 investments, with 1 in the past 12 months and 0% as lead.

Stage Focus

  • Seed (29%)
  • Series Unknown (21%)
  • Series C (14%)
  • Angel (14%)
  • Private Equity (7%)
  • Series B (7%)
  • Pre Seed (7%)

Country Focus

  • Sweden (64%)
  • United States (7%)
  • Germany (7%)
  • Poland (7%)
  • United Kingdom (7%)
  • Lithuania (7%)

Industry Focus

  • Software
  • Android
  • E-commerce
  • Fintech
  • Payments
  • Delivery Service
  • Location Based Services
  • Logistics
  • Navigation
  • Supply Chain Management
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Sebastian Siemiatkowski frequently co-invest with?

Sequoia Capital
North America, California, United States, Menlo Park
Co-Investments: 2
Bossa Invest
South America, Sao Paulo, Brazil, São Paulo
Co-Investments: 1
Flat Capital
Europe, Stockholms Lan, Sweden, Stockholm
Co-Investments: 4
Creandum
Europe, Stockholms Lan, Sweden, Stockholm
Co-Investments: 2
8VC
North America, California, United States, San Francisco
Co-Investments: 1
Atomico
Europe, England, United Kingdom, London
Co-Investments: 2
Blue Cloud Ventures
North America, Florida, United States, Miami
Co-Investments: 1
General Atlantic
North America, New York, United States, New York
Co-Investments: 2
Wellstreet
Europe, Stockholms Lan, Sweden, Stockholm
Co-Investments: 2
Broom Ventures
North America, California, United States, Palo Alto
Co-Investments: 1

Which angels does Sebastian Siemiatkowski often collaborate with?

TF
Europe, Ile-de-France, France, Paris
Shared Deals: 1
SB
Europe, Stockholms Lan, Sweden, Stockholm
Shared Deals: 1
JC
North America, California, United States, San Francisco
Shared Deals: 1
IP
Europe, Southern Finland, Finland, Helsinki
Shared Deals: 2
DP
Europe, Sweden
Shared Deals: 3
KP
Europe, Stockholms Lan, Sweden, Stockholm
Shared Deals: 2
VJ
Europe, Stockholms Lan, Sweden, Stockholm
Shared Deals: 4
SK
Europe, Stockholms Lan, Sweden, Stockholm
Shared Deals: 2
NA
Europe, Stockholms Lan, Sweden, Stockholm
Shared Deals: 2
NZ
Europe, England, United Kingdom, London
Shared Deals: 2

What are some of recent deals done by Sebastian Siemiatkowski?

nexos.ai

Vilnius, Vilniaus Apskritis, Lithuania

nexos.ai offers an agentic AI orchestration platform that helps simplify operations, boost productivity, and accelerate business growth.

Artificial Intelligence (AI)Information TechnologySaaSSoftware
SeedJan 17, 2025
Amount Raised: $8,000,000
Nylas

San Francisco, California, United States

Nylas is the cpaas company that empowers businesses worldwide to unlock the power of their communications data.

Developer APIsEmailSoftware
Series CJun 17, 2021
Amount Raised: $120,000,000
Prion

Stockholm, Stockholms Lan, Sweden

Prion makes it quick and easy for the preschool staff to give parents insight into what happens at preschool - together with the children.

AndroidAppsComputerSoftware
Pre SeedSep 23, 2019
Amount Raised: $411,968
Depop

London, England, United Kingdom

Depop provides a mobile application that allows users to buy, sell, discover, and explore various things.

AndroidE-CommerceiOSMarketplaceMobile
Series CJun 6, 2019
Amount Raised: $62,000,000
Klarna

Stockholm, Stockholms Lan, Sweden

Klarna is an e-commerce payment solutions platform for merchants and shoppers.

E-CommerceFinTechPaymentsShopping
Private EquityApr 8, 2019
Amount Raised: $93,000,000
Steven

Stockholm, Stockholms Lan, Sweden

Steven is a mobile application for group payments that settle debts between people.

Financial ServicesFinTechMobile AppsMobile PaymentsPayments
SeedNov 29, 2017
Amount Raised: $1,075,411
Prion

Stockholm, Stockholms Lan, Sweden

Prion makes it quick and easy for the preschool staff to give parents insight into what happens at preschool - together with the children.

AndroidAppsComputerSoftware
SeedJun 7, 2017
Budbee

Stockholm, Stockholms Lan, Sweden

Budbee is a logistics-tech company that offers last-mile delivery services with an emphasis on sustainability.

Delivery ServiceLocation Based ServicesLogisticsNavigationSupply Chain ManagementSustainability
SeedJan 30, 2017
Amount Raised: $3,212,356
Scrive

Stockholm, Stockholms Lan, Sweden

Scrive is a platform that provides agreement lifecycle automation powered by electronic signature and identification solutions.

InternetRetailSaaSSoftware
Series UnknownJul 5, 2016
Amount Raised: $1,174,674
Budbee

Stockholm, Stockholms Lan, Sweden

Budbee is a logistics-tech company that offers last-mile delivery services with an emphasis on sustainability.

Delivery ServiceLocation Based ServicesLogisticsNavigationSupply Chain ManagementSustainability
AngelMar 29, 2016
Amount Raised: $1,240,000