Company Insights/Biotechnology Research/Gilead Sciences

Gilead Sciences Headcount Insights and Observed Profile Trends

Gilead Sciences has 15,001 observed employee profiles in the July 2026 headcount snapshot. This is a profile coverage measure, not a company-reported workforce total.

Updated September 10, 2026
Observed profiles
15,001
As of July 2026 · +0.5% since August 2025
New hires
713
Last 12 months
Founded
2007
Departments
36
17% in Research
Countries represented
74
13.9% of profiles in California, USA
Summary
  • Observed professional profiles increased by 0.5% from 14,926 in August 2025 to 15,001 in July 2026.
  • Research is the largest classified department, with 1,997 of 11,789 profiles (16.9%).
  • California, USA is the most common reported profile location, representing 13.9% of the 11,789 profiles in the geography snapshot.
  • 713 observed hire events appear in the latest 12-month event window.

Gilead Sciences observed profiles over time

The overview and this chart use the same monthly profile series. These observed counts may differ from the company’s total workforce.

Observed professional profile trend

15,00514,89114,776Aug 25Jan 26Jul 26Jul 2615,001

Observed professional profiles increased by 0.5% across the available monthly window, from 14,926 to 15,001 profiles.

Observed profiles by department

Current professional profiles rank classified departments by observed count.

Population: 11,789 profiles with a department classification from 11,789 current observed profiles. This population is separate from the monthly headcount series.

What the data says

Research is the largest observed department at Gilead Sciences, with 1,997 professional profiles.

Team composition

Research
17%
1,997
Other
16%
1,844
Sales
11%
1,313
Information Technology
8%
985
Business Development
5%
610
Quality Assurance
5%
585
Manufacturing
4%
509
Legal
4%
495
Health Care Provider
4%
484
Management
4%
458
Finance
3%
331
Project Management
2%
293
Marketing
2%
287
Human Resources
2%
266
Administrative
2%
260
Engineering
2%
214
Accounting
1%
120
Education
<1%
99
Consulting
<1%
95
Product Management
<1%
91
Analyst
<1%
75
Writing / Editing
<1%
71
Public Relations
<1%
61
Design
<1%
49
Science
<1%
34
Training
<1%
31
Art / Creative
<1%
25
Supply Chain
<1%
24
Customer Service
<1%
22
Production
<1%
22
Purchasing
<1%
20
General Business
<1%
8
HealthCare Provider
<1%
4
Strategy / Planning
<1%
4
QualityAssurance
<1%
2
Advertising
<1%
1

Profiles by location

Locations reported on individual profiles show where observed profiles are based. These are profile locations, not a count of company offices.

What the data says

California, USA is the most common observed profile location for Gilead Sciences in this dataset.

Geographic distribution

California, USA
13.9%
San Mateo, California, USA
5.3%
San Francisco, California, USA
4.6%
London, England, GBR
2.0%
Cork, County Cork, IRL
1.4%

City or region available for 10,227 of 11,789 profiles (86.8%). Percentages use all observed profiles, including those without a known location. Profile data through 2026-08-25.

Profiles by seniority

The profile distribution shows the balance between leadership, management, and individual contributors.

Population: 11,789 profiles with a vendor seniority classification from 11,789 current observed profiles. This population is separate from the monthly headcount series. Ambiguous Owner, Partner, Executive, and unavailable labels are grouped as Unclassified.

Vendor-classified seniority mix

Senior26.8%
3,156
Manager23.1%
2,727
Entry level14.2%
1,676
Mid-Senior level12.1%
1,431
Director9.6%
1,126
Unclassified7.4%
877
Associate4.2%
499
Vice President (VP)1.4%
166
Internship<1%
95
Chief X Officer (CxO)<1%
36

Most common job titles

The most frequent titles in the available profile population show the roles with the greatest visible density.

Counts come from the current observed profile snapshot and are separate from the monthly headcount series.

Role concentration

Associate Director
15.0%
Associate Scientist
12.0%
Director
11.4%
Principal Scientist
11.1%
Senior Scientist
10.6%
Therapeutic Specialist
8.9%
Scientist
8.6%
Senior Therapeutic Specialist
8.5%
Administrative Coordinator
7.3%
Senior Associate Scientist
6.6%

Frequently asked questions

How many professional profiles are observed for Gilead Sciences?

Gilead Sciences has 15,001 observed employee profiles in the July 2026 headcount snapshot. This coverage measure may differ from the company's total workforce.

How has Gilead Sciences's observed professional profile count changed?

Gilead Sciences's observed professional profile count increased by 0.5% from August 2025 to July 2026, using the same monthly series shown above.

What is the largest department at Gilead Sciences?

Research is the largest observed department at Gilead Sciences, with 1,997 professional profiles.

How is Gilead Sciences workforce data collected?

Observed profile trends use the latest available monthly professional profile snapshot. Company-reported workforce totals appear separately and only when supported by a primary company source or regulatory filing. Geography uses location information from individual profiles, aggregated separately from verified company headquarters. Data may lag internal company changes.

Methodology

The observed profile metric and trend chart use the same latest available monthly snapshot, with its observation month shown separately from the page update date. Company-reported workforce totals appear only when supported by a primary source and remain separate from profile counts. Geographic distributions use a separate current profile population and person location fields, never company headquarters. Country counts describe countries represented in those profiles, not offices. Location percentages include profiles without a known city or region in their denominator. Department, seniority, and title coverage may differ from the company workforce.

Last verified: September 10, 2026