Microsoft vs Pfizer: Founders, CEOs and History
Microsoft was founded in 1975 by Bill Gates, Paul Allen and is led by Satya Nadella. Pfizer was founded in 1849 by Charles Pfizer, Charles Erhart and is led by Albert Bourla.
Company facts
Founders
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.
Pfizer
Charles Pfizer
Pfizer possesses a historic, immigrant founding story, rooted entirely in the rapid industrial expansion of 19th-century Brooklyn and defined by an effective, intensely meticulous German chemist and his ambitious confectioner cousin.
Charles Erhart
Charles Erhart's role in Pfizer's founding is less celebrated than his cousin's, partly because the company carries Charles Pfizer's name and partly because his commercial contributions were less visible than the scientific achievements that drove the company'…
CEOs and their tenures
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
Pfizer
- Ian Read2010–2018
Chief Executive Officer
He ruthlessly cut R&D spending and eliminated tens of thousands of jobs, significantly boosting short-term earnings per share despite massive patent cliffs for blockbuster drugs like Lipitor.
Source - Albert Bourla2019–present
Chairman and Chief Executive Officer
A veterinarian by training who joined Pfizer Animal Health in 1993, Bourla became CEO on January 1, 2019 and Chairman in 2020.
Source - Dave Denton2022–2026
Chief Financial Officer
As CFO, he aggressively restructured the balance sheet following the Seagen acquisition, prioritizing debt reduction while defending the dividend.
Source - Chris Boshoff2025–present
Chief Scientific Officer and President, Research & Development
He completely restructured the research and development organization to focus on antibody-drug conjugates (ADCs), aggressively expanding Pfizer's pipeline of cancer therapeutics.
Source - Cecile Guegan2026–present
Interim Chief Financial Officer
She modernized the company's internal auditing and compliance structures, ensuring rapid but safe clinical execution for high-priority vaccine programs.
Source
Timeline: Microsoft and Pfizer side by side
1849Pfizer
Pfizer Founded
Charles Pfizer and Charles Erhart founded the company in Brooklyn.
1944Pfizer
Penicillin Scale-Up
Pfizer helped industrialize penicillin production during World War II.
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.
1998Pfizer
Viagra Approved
The FDA approved Viagra in 1998.
2000Pfizer
Warner-Lambert Deal
Pfizer acquired Warner-Lambert, adding Lipitor.
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.
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.
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.
2019Pfizer
Albert Bourla becomes CEO
Albert Bourla became CEO of Pfizer in 2019. A veterinarian by training who joined Pfizer Animal Health in 1993, Bourla became CEO on January 1, 2019 and Chairman in 2020.
2020Pfizer
BioNTech COVID Vaccine Partnership
Pfizer and BioNTech brought Comirnaty through emergency authorization.
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.
2023Pfizer
Seagen Acquisition
Pfizer completed the $43 billion Seagen acquisition.
2025Pfizer
Chris Boshoff Becomes CSO
Chris Boshoff became Chief Scientific Officer and President, Research & Development effective January 1, 2025.
2025Pfizer
Metsera Acquisition
Pfizer completed its acquisition of obesity drug developer Metsera in November 2025 for up to about $10 billion including CVRs.
2025Pfizer
FY2025 Revenue Base
Pfizer reported $62.579 billion of FY2025 revenue.
2026Pfizer
Innovent Oncology Collaboration
Pfizer signed a 12-program cancer collaboration with Innovent Biologics: $650 million upfront and up to $9.85 billion in milestones.
Acquisitions
Microsoft
- Activision Blizzard2023$68.7B
- Nuance Communications2022$19.7B
- ZeniMax Media2021$7.5B
- GitHub2018$7.5B
- LinkedIn2016$26.2B
Pfizer
- Metsera, Inc.2025$7B
- Seagen Inc.2023$43B
- Medivation Inc.2016$14B
- Wyeth2009$68B
- Pharmacia Corporation2003$60B
- Warner-Lambert Company2000$111B
Questions about Microsoft vs Pfizer
Who is the CEO of Microsoft Corporation and Pfizer Inc.?
Microsoft Corporation is led by Satya Nadella and Pfizer Inc. is led by Albert Bourla. Both serve as the top executive responsible for the company's strategy, operations, and financial performance.
When was Microsoft Corporation founded vs Pfizer Inc.?
Pfizer Inc. was founded in 1849 — 126 years before Microsoft Corporation, which was founded in 1975. Pfizer Inc.'s longer operating history gives it a deeper track record but also potentially more institutional inertia compared to the younger Microsoft Corporation.
How many employees does Microsoft Corporation have compared to Pfizer Inc.?
Microsoft Corporation employs approximately 223,000 people, while Pfizer Inc. employs approximately 75,000. Microsoft Corporation has the larger workforce at 223,000 employees, compared to Pfizer Inc.'s 75,000. A higher headcount does not necessarily imply greater efficiency — it often reflects differences in business model (e.g., manufacturing vs. software).
Where are Microsoft Corporation and Pfizer Inc. headquartered?
Both Microsoft Corporation and Pfizer Inc. are headquartered in United States, meaning they operate under the same primary regulatory and tax environment.
Who founded Microsoft Corporation and Pfizer Inc.?
Microsoft Corporation was founded by Bill Gates, Paul Allen. Pfizer Inc. was founded by Charles Pfizer, Charles Erhart.
Which company has a longer operating history — Microsoft Corporation or Pfizer Inc.?
Pfizer Inc. has been operating for approximately 177 years, making it the more established of the two companies. Microsoft Corporation has been in operation for around 51 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 Microsoft vs Pfizer overview