How many employees work at Gelesis?
Gelesis, Inc. has approximately 78 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Gelesis’s total headcount has declined 18.8% from 97 employees in 2023 to 78 in 2026.
About Gelesis’s Workforce
Gelesis, Inc. is a Pharmaceuticals company that employs 78 people worldwide as of March 2026. It is the 5th-largest by headcount among its peers. Founded in 2006, the company is headquartered in Boston, Massachusetts.
Gelesis's workforce has declined 18.8% from 2023 to 2026, though it is up 5.2% year over year in 2026. It fell to a low of 77 in 2025 Q4 before recovering. Its workforce is concentrated most in Southern Europe (90.5%), followed by North America (9.5%).
Gelesis's functional groups are Finance and Operations (56.9%), Sales and Marketing (24.2%), and Engineering (19.0%), with Finance and Operations growing fastest (up 1.3%). The average salary is $41,939, ranging from a median of $118,000 in North America to $23,000 in Southern Europe, up 1.7% year over year in 2026.
Overall employee sentiment is neutral and broadly stable.
Sourced from Revelio Labs workforce data.
- Headquarters
- Boston, Massachusetts
- Founded
- 2006
- Industry
- Pharmaceuticals
- Employees
- 78
- YoY
- +5.2% (-3)
As of March 2026
Gelesis workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Gelesis. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsGelesis Annual Employee Count (2023-2026)
- Gelesis had 78 employees in 2026, a 5.2% increase (-3) from 2025.
- Gelesis had 77 employees in 2025, a 3.7% increase (-5) from 2024.
- Gelesis had 82 employees in 2024, a 2.9% decline (-4) from 2023.
- Gelesis had 86 employees in 2023, a 8.1% decline (-30) from 2022.
Gelesis's total workforce has grown from 77 employees in 2025 to 78 in 2026. Gelesis's headcount peaked at 97 in 2023 before declining in 2025 and recovering through 2026.
Gelesis, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 78 | -3 | +5.2% |
| 2025 | Q4 | 77 | -5 | +3.7% |
| 2025 | Q3 | 83 | +3 | -1.1% |
| 2025 | Q2 | 87 | +4 | -2.6% |
| 2025 | Q1 | 81 | -5 | -4.6% |
| 2024 | Q4 | 82 | -4 | -2.9% |
| 2024 | Q3 | 80 | -14 | -3.8% |
| 2024 | Q2 | 83 | -14 | -2.2% |
| 2024 | Q1 | 86 | -21 | -3.5% |
| 2023 | Q4 | 86 | -30 | -8.1% |
| 2023 | Q3 | 94 | -43 | -10.4% |
| 2023 | Q2 | 97 | -51 | -13.5% |
See Gelesis's complete headcount history, including quarterly breakdowns.
Get the DataGelesis Employee Count by Region (2026)
Southern Europe accounts for the largest share of Gelesis's global workforce with approximately 91% of total employees, followed by North America.
Gelesis employees by region
| Region | Employees | % of Total |
|---|---|---|
| Southern Europe | 71 | 90.5% |
| North America | 7 | 9.5% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataGelesis Employee Count by Department (2026)
Gelesis's employee groups are Finance and Operations (56.9%), Sales and Marketing (24.2%), and Engineering (19.0%).
Gelesis employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 45 | 56.9% |
| Sales and Marketing | 19 | 24.2% |
| Engineering | 15 | 19.0% |
Compare Gelesis's department mix to industry peers.
See Full DataGelesis Employee Salary by Region (2026)
Gelesis's average employee salary is $41,939 globally. Employees in North America receive the highest compensation, with median pay approximately 2.8x the global average. Pay is lowest in Southern Europe, at a median of $23,000.
Gelesis median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $118,000 |
| Southern Europe | $23,000 |
Unlock salary by role, level, and city — and compare to Gelesis's industry peers.
Unlock Salary DataGelesis Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Gelesis's workforce based on public professional data. Overall sentiment is neutral and has held steady year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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Frequently Asked Questions About Gelesis
- How fast is Gelesis growing?
- In 2026, Gelesis's headcount grew 5.2% to 78 employees, down from 81 in 2025.
- See the full headcount history
- Where are Gelesis employees located?
- Most Gelesis employees are based in Southern Europe (90.5% of headcount), followed by North America.
- Explore where the workforce is based
- What is the average salary at Gelesis?
- The average employee salary at Gelesis is approximately $41.9k per year.
- Analyze the salary distribution
- When was Gelesis founded and where is it headquartered?
- Gelesis was founded in 2006 and is headquartered in Boston, Massachusetts.
- Compare Gelesis to industry peers
Speak with a workforce expert about Gelesis.
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