Executives/Thermo Fisher Scientific CEO
Marc N. Casper, CEO of Thermo Fisher Scientific

Who is the CEO of Thermo Fisher Scientific in 2026?

Marc N. Casper is the Chief Executive Officer, Chairman and President of Thermo Fisher Scientific. Marc has held the CEO seat since October 2009, and was previously President and CEO at KENDRO LABORATORY PRODUCTS LIMITED.

Updated September 23, 2026
Time in seat
16 years
CEO since October 2009
Years at company
24 years
Joined Thermo Fisher Scientific November 2001
Career span
29 years
First recorded role January 1997
Summary
  • Marc N. Casper rose through Thermo Fisher Scientific: Chairman and CEO from November 2001, before taking the CEO seat in October 2009.
  • Marc N. Casper was President Americas and President Europe and Asia Pacific at DADE BEHRING from January 1997 to January 2000.
  • Marc N. Casper holds a master of Business Administration - MBA from Harvard Business School and a bachelor's degree, Finance from Wesleyan University.

Current company

Thermo Fisher Scientific

Thermo Fisher Scientific is a multinational company providing scientific instrumentation.

biotechnology industryHeadquartered in WalthamFounded 2006NYSE: TMO

Source: Wikidata
View Thermo Fisher Scientific headcount

Career and education

Marc N. Casper joined Thermo Fisher Scientific in November 2001 and has been CEO since October 2009. Before Thermo Fisher Scientific, Marc was President and CEO at KENDRO LABORATORY PRODUCTS LIMITED from January 2000 until January 2001.

Career

  1. Thermo Fisher Scientific2001 to present
    • Chairman and CEO
  2. KENDRO LABORATORY PRODUCTS LIMITED2000 to 2001
    • President and CEO
  3. DADE BEHRING1997 to 2000
    • President Americas and President Europe and Asia Pacific

Sources: LinkedIn profile

Education

Harvard Business School, Master of Business Administration - MBAWesleyan University, Bachelor's degree, FinanceSource

Decision makers by function

480+ decision makers at Thermo Fisher Scientific in Unify, vice president level and above. Choose a function to see who leads it.

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Top decision makers at Thermo Fisher Scientific

Vice president level and above, most senior first
Craig ReedVice President, Global Procurement & Chief Procurement Officer · USA@thermofisher.com
Joe HolmesVice President, Chief Accounting Officer · USA@thermofisher.com
Konrad BauerSVP Global Business Services · DEU@thermofisher.com
Aditya JoshiChief Strategy Officer · USA@thermofisher.com
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Leadership team at Thermo Fisher Scientific

Marc N. Casper leads a leadership team of 8 published executives. The most recent appointment is Thomas B. Shropshire as Senior Vice President and General Counsel, in seat since 2025.

Most senior 5 of 8

NameTitleIn seat since
Marc N. CasperChairman, President and Chief Executive Officer2009
Stephen WilliamsonSenior Vice President and Chief Financial OfficerNot stated
Michel LagardeExecutive Vice President and Chief Operating OfficerNot stated
Thomas B. ShropshireSenior Vice President and General Counsel2025
Lisa P. BrittSenior Vice President and Chief Human Resources OfficerNot stated

Sources: Thermo Fisher Scientific 2025 Form 10-K

Frequently asked questions

Who is the CEO of Thermo Fisher Scientific?

Marc N. Casper is the Chief Executive Officer, Chairman and President of Thermo Fisher Scientific. Marc has held the CEO seat since October 2009, and was previously President and CEO at KENDRO LABORATORY PRODUCTS LIMITED.

When did Marc N. Casper become CEO of Thermo Fisher Scientific?

Marc N. Casper has been CEO of Thermo Fisher Scientific since October 2009, according to LinkedIn profile.

What did Marc N. Casper do before Thermo Fisher Scientific?

Marc N. Casper was President and CEO at KENDRO LABORATORY PRODUCTS LIMITED from January 2000 until January 2001, according to LinkedIn profile.

How long has Marc N. Casper been CEO of Thermo Fisher Scientific?

Marc N. Casper has been CEO of Thermo Fisher Scientific for 16 years, since October 2009.

Who else leads Thermo Fisher Scientific?

Stephen Williamson (Senior Vice President and Chief Financial Officer), Michel Lagarde (Executive Vice President and Chief Operating Officer), Thomas B. Shropshire (Senior Vice President and General Counsel), Lisa P. Britt (Senior Vice President and Chief Human Resources Officer), and 3 more. Source: Thermo Fisher Scientific 2025 Form 10-K.

Reach Thermo Fisher Scientific's decision makers

480+ leaders at vice president level and above, with verified work emails and phone numbers in Unify.

Methodology

The seat holder is identified in Unify's professional profile dataset, then confirmed against the company's published leadership page, its SEC filings, and Wikipedia before publication. Career and education rows carry the public document they were taken from. Leadership team membership follows the company's own leadership page; in-seat dates come from filings where available and otherwise from the profile record. Company figures are read from the Unify headcount page for the same company and are profile coverage measures, never company-reported workforce totals. The employee preview lists vice president and senior vice president level profiles by department. No personal contact details are published.

Identity confirmed against Wikipedia, Thermo Fisher Scientific. Last verified: September 23, 2026.