Sebastian Siemiatkowski Overview
- Investor Type
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Angel
- Investments
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15
- Portfolio
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9
- Exits
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5

Sebastian Siemiatkowski General Information
Description
Mr. Sebastian Siemiatkowski is a Co-Founder and serves as Chief Executive Officer and Board Member at Klarna. He is also an Angel Investor. He holds a degree from the Stockholm School of Economics and has eight years of experience in sales, including being the former Head of Sales at Djuice Uppsala. However, the most noted of Sebastian's accomplishments is that he, along with our two other founders, revolutionized Swedish e-commerce and created the success story we know today as Klarna. He served as Senior Advisor at eEquity.
Business Details
Primary Investor Type
Corporate Office
- Sveavägen 46
- 111 34 Stockholm
- Sweden
Sebastian Siemiatkowski Investments (15)
Company Name | Deal Date | Deal Type | Deal Size | Industry | Company Stage | Lead Partner |
---|---|---|---|---|---|---|
Talentium | 28-Jan-2025 | Seed Round | Business/Productivity Software | Generating Revenue | ||
Nylas | 17-Jun-2021 | Software Development Applications | Generating Revenue | |||
LoveLocal | 11-Dec-2019 | Business/Productivity Software | Generating Revenue | |||
Prion (Business/Productivity Software) | 01-Oct-2019 | Business/Productivity Software | Generating Revenue | |||
Upcomer | 10-Jun-2019 | Publishing | Generating Revenue | |||
Depop | 07-Jun-2019 | Information Services (B2C) | Generating Revenue | |||
Lyst | 31-Oct-2018 | Specialty Retail | Generating Revenue | |||
Steven | 29-Nov-2017 | Financial Software | Generating Revenue | |||
Prion (Business/Productivity Software) | 01-Jun-2017 | Angel (individual) | Business/Productivity Software | Generating Revenue | ||
Budbee | 30-Jan-2017 | Angel (individual) | Logistics | Generating Revenue |
Sebastian Siemiatkowski Exits (5)
Company Name | Exit Date | Exit Type | Exit Size |
---|---|---|---|
Truecaller | 08-Oct-2021 | IPO | |
Depop | 02-Jun-2021 | ||
Scrive | 08-Jun-2020 | Buyout/LBO | |
Upcomer | 01-Jan-2020 | Merger/Acquisition |
Sebastian Siemiatkowski Investments by Industry, Year, and Region
Sebastian Siemiatkowski Co-Investors (25)
Name | With | Exits | Lead Partner | Series | Industry |
---|---|---|---|---|---|
Flat Capital | 2 |
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Blue Owl Capital |
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Citi Ventures |
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Round13 Capital |
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Tiger Global Management |
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Sebastian Siemiatkowski FAQs
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Who is Sebastian Siemiatkowski?
Sebastian Siemiatkowski is an angel Investor who has made 15 investments.
-
What kind of investor is Sebastian Siemiatkowski?
Sebastian Siemiatkowski is an angel investor.
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What does Sebastian Siemiatkowski do?
As an angel investor, Sebastian Siemiatkowski invests personal money into promising companies, typically in exchange for equity.
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What has Sebastian Siemiatkowski invested in?
Sebastian Siemiatkowski has made numerous investments in companies like Talentium, Nylas, and LoveLocal within the Business/Productivity Software and Software Development Applications industries.
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What has Sebastian Siemiatkowski invested in recently?
Sebastian Siemiatkowski's latest investment was on 28-Jan-2025 in Talentium, a company within the Business/Productivity Software industry.
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