Klarna vs Microsoft: Founders, CEOs and History
Klarna was founded in 2005 by Sebastian Siemiatkowski, Niklas Adalberth, Victor Jacobsson and is led by Sebastian Siemiatkowski. Microsoft was founded in 1975 by Bill Gates, Paul Allen and is led by Satya Nadella.
Company facts
Founders
Klarna
Sebastian Siemiatkowski
Sebastian Siemiatkowski, born in 1981 in Sweden to Polish immigrant parents, co-founded Klarna (originally Kreditor) with Niklas Adalberth and Victor Jacobsson in 2005.
Niklas Adalberth
Niklas Adalberth co-founded Klarna in 2005 with Sebastian Siemiatkowski and Victor Jacobsson and helped run the business during its expansion as Deputy CEO.
Victor Jacobsson
Victor Jacobsson co-founded Klarna in 2005 with Sebastian Siemiatkowski and Niklas Adalberth.
Microsoft
Bill Gates
Microsoft was founded in 1975 in Albuquerque, New Mexico, by Bill Gates and Paul Allen, childhood friends from Seattle who had spent their teenage years finding ways to get free time on mainframe computers.
Paul Allen
Paul Allen co-founded Microsoft and was crucial to its earliest technical and strategic decisions. He helped develop Altair BASIC, gave the company its original name, and participated in the operating-system opportunity that led to MS-DOS.
CEOs and their tenures
Klarna
- Sebastian Siemiatkowski2005–present
Co-founder and Chief Executive Officer
Has led Klarna since its founding, growing it from a Stockholm invoice startup into a $3.5 billion-revenue public company.
Source - Niklas Adalberth2005–2015
Co-founder, former Deputy CEO
As Co-Founder, he served as Deputy CEO, scaling the company across Europe before resigning in 2015 to found the Norrsken Foundation, a tech-focused philanthropic fund.
Source - Niclas Neglén2021–present
Chief Financial Officer
As CFO, he engineered the severe cost-cutting measures required to drive the company back toward profitability ahead of its highly anticipated US IPO.
Source
Microsoft
- Bill Gates1975–2000
Co-founder and CEO
Gates built Microsoft's licensing model: software sold to many hardware makers rather than tied to one.
Source - Steve Ballmer2000–2014
CEO
Ballmer grew revenue from about $23 billion in FY2000 to about $78 billion in FY2013 and built the enterprise server and sales business that Azure later scaled on.
Source - Satya Nadella2014–present
Chairman and CEO
Nadella made Azure and Microsoft 365 the company's core, opened Microsoft to Linux and open source, and positioned it early in generative AI through OpenAI.
Source
Timeline: Klarna and Microsoft side by side
1975Microsoft
Microsoft Founded
Bill Gates and Paul Allen founded Microsoft after recognizing that the Altair 8800 needed usable programming software. Their first product, Altair BASIC, turned a hobbyist computer kit into a programmable platform.
1981Microsoft
MS-DOS Ships With IBM PC
IBM introduced its personal computer with MS-DOS 1.0 and other Microsoft products. The milestone mattered because Microsoft's operating-system work moved from a small software supplier's project into the emerging corporate PC standard.
1985Microsoft
Windows Launch
The release of Windows 1.0 began Microsoft's long move from command-line operating systems to graphical personal computing. The first version was not an instant blockbuster, but it gave Microsoft a user-interface path that could evolve with PC hardware.
1986Microsoft
Microsoft IPO
Microsoft went public on the Nasdaq in March 1986.
1990Microsoft
Office Suite Release
The bundling of Word, Excel, and PowerPoint into Microsoft Office created a productivity suite that became central to business work. The bundle simplified enterprise purchasing and made file compatibility a competitive weapon.
1995Microsoft
Windows 95 Released
Microsoft released Windows 95 in August 1995.
1998Microsoft
U.S. Antitrust Case
The U.S. Department of Justice accused Microsoft of using Windows power to suppress browser competition. The case mattered because it placed Microsoft's platform tactics under public and legal scrutiny at the height of its PC strong position.
2005Klarna
Founded as Kreditor
Sebastian Siemiatkowski, Niklas Adalberth and Victor Jacobsson launch an invoice-after-delivery service for Swedish online shops.
2009Klarna
Renamed Klarna
Kreditor is rebranded as Klarna and expands across the Nordics and into Germany and the Netherlands.
2010Microsoft
Azure Commercial Launch
Azure gave Microsoft a way to compete in cloud infrastructure as enterprise customers began shifting workloads away from company-owned servers.
2014Klarna
Acquires SOFORT
Klarna completes its purchase of German bank-transfer payment provider SOFORT, giving it scale in the DACH region.
2014Microsoft
Satya Nadella CEO
Satya Nadella became CEO and moved Microsoft away from a strategy that forced every product to serve Windows. He prioritized Azure, Microsoft 365, open source, Linux support, cross-platform software, and a more collaborative developer posture.
2016Microsoft
LinkedIn Acquisition
Microsoft agreed to acquire LinkedIn in 2016 for $26.2 billion in cash. The deal mattered because it added a professional identity network to a company already strong in Office, Dynamics, cloud services, recruiting tools, advertising, and enterprise sales.
2017Klarna
Swedish banking licence
Klarna receives a full banking licence from the Swedish Financial Supervisory Authority, operating as Klarna Bank AB.
2018Microsoft
GitHub Acquisition
Microsoft acquired GitHub for $7.5 billion in stock, reversing years of developer skepticism toward the company. The acquisition placed Microsoft inside the daily workflow of software developers across languages, clouds, and operating systems.
2021Klarna
$45.6 billion valuation
A SoftBank-led funding round values Klarna at $45.6 billion during the pandemic e-commerce boom.
2022Klarna
Valuation reset and layoffs
Klarna cuts about 10% of staff in May and raises money in July at a $6.7 billion valuation.
2023Microsoft
AI Leadership
Microsoft's expanded OpenAI partnership and Copilot product rollout placed the company at the center of enterprise generative AI adoption.
2023Microsoft
Activision Blizzard Acquisition Closes
Microsoft completed the Activision Blizzard acquisition after intense regulatory review. The deal added Call of Duty, World of Warcraft, Diablo, Overwatch, Candy Crush, and other franchises to Microsoft Gaming.
2024Klarna
Return to net profit
Klarna reports a $21 million net profit for 2024 on $2.81 billion of revenue.
2025Klarna
NYSE IPO
Klarna lists on the New York Stock Exchange as KLAR in September 2025, pricing at $40 per share.
2026Klarna
FY2025 results
Klarna reports $3.51 billion of FY2025 revenue, $127.9 billion of GMV, $65 million of adjusted operating profit and a $273 million net loss.
2026Klarna
Q2 profit and guidance cut
Klarna posts a $9 million Q2 2026 net profit on $1.042 billion of revenue but lowers 2026 GMV guidance to $149-151 billion.
Acquisitions
Klarna
- PriceRunner2022Undisclosed
- APPRL2021Undisclosed
- HERO2021Undisclosed
- Stocard2021Undisclosed
- Moneymour2020Undisclosed
- BillPay2017Undisclosed
Microsoft
- Activision Blizzard2023$68.7B
- Nuance Communications2022$19.7B
- ZeniMax Media2021$7.5B
- GitHub2018$7.5B
- LinkedIn2016$26.2B
Questions about Klarna vs Microsoft
Who is the CEO of Klarna Group plc and Microsoft Corporation?
Klarna Group plc is led by Sebastian Siemiatkowski and Microsoft Corporation is led by Satya Nadella. Both serve as the top executive responsible for the company's strategy, operations, and financial performance.
When was Klarna Group plc founded vs Microsoft Corporation?
Microsoft Corporation was founded in 1975 — 30 years before Klarna Group plc, which was founded in 2005. Microsoft Corporation's longer operating history gives it a deeper track record but also potentially more institutional inertia compared to the younger Klarna Group plc.
How many employees does Klarna Group plc have compared to Microsoft Corporation?
Klarna Group plc employs approximately 2,831 people, while Microsoft Corporation employs approximately 223,000. Microsoft Corporation has the larger workforce at 223,000 employees, compared to Klarna Group plc's 2,831. A higher headcount does not necessarily imply greater efficiency — it often reflects differences in business model (e.g., manufacturing vs. software).
Where are Klarna Group plc and Microsoft Corporation headquartered?
Klarna Group plc is headquartered in United Kingdom and Microsoft Corporation is headquartered in United States. Their different home markets mean they may face different regulatory frameworks, tax regimes, and currency exposure.
Who founded Klarna Group plc and Microsoft Corporation?
Klarna Group plc was founded by Sebastian Siemiatkowski, Niklas Adalberth, Victor Jacobsson. Microsoft Corporation was founded by Bill Gates, Paul Allen.
Which company has a longer operating history — Klarna Group plc or Microsoft Corporation?
Microsoft Corporation has been operating for approximately 51 years, making it the more established of the two companies. Klarna Group plc has been in operation for around 21 years. A longer operating history often signals greater institutional resilience and brand recognition, though it can also mean slower adaptation to new market conditions.
Figures come from each company's filings and the sources linked beside them. Amounts reported in another currency are shown in US dollars at an approximate rate and marked with ~. Back to the Klarna vs Microsoft overview