How many employees work at Seres Therapeutics?
Seres Therapeutics, Inc. (MCRB) has approximately 59 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Seres Therapeutics’s total headcount has declined 76.9% from 256 employees in 2023 to 59 in 2026.
Is Seres Therapeutics hiring right now?
Yes, Seres Therapeutics is actively hiring. Seres Therapeutics had 2 active job postings in 2026, a 200.0% increase from 2025 — see job openings & hiring trends.
About Seres Therapeutics’s Workforce
Seres Therapeutics, Inc. (MCRB) is a Pharmaceuticals company that employs 59 people worldwide as of March 2026. It is the 10th-largest by headcount among its peers. Founded in 2010, the company is headquartered in Cambridge, Massachusetts and trades on the NASDAQ.
Seres Therapeutics's workforce has declined 76.9% from 2023 to 2026, down 19.1% year over year in 2026. It fell to a low of 59 in 2026 Q1 before recovering. Its workforce is concentrated most in North America (94.8%), followed by South America (2.2%) and Western Europe (1.6%).
Seres Therapeutics's functional groups are Finance and Operations (56.2%), Sales and Marketing (23.4%), and Engineering (20.4%). The average salary is $181,659, ranging from a median of $164,000 in North America to $29,000 in South America, up 3.9% year over year in 2026.
Seres Therapeutics's active job postings rose 200.0% in 2026 to 2, with new postings per month cooling from 11 in 2023 to 2 in 2026. Overall employee sentiment is neutral but improving.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: MCRB
- Headquarters
- Cambridge, Massachusetts
- Founded
- 2010
- Industry
- Pharmaceuticals
- Employees
- 59
- YoY
- -19.1% (-28)
As of March 2026
Seres Therapeutics workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Seres Therapeutics. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsSeres Therapeutics Annual Employee Count (2023-2026)
- Seres Therapeutics had 59 employees in 2026, a 19.1% decline (-28) from 2025.
- Seres Therapeutics had 67 employees in 2025, a 15.2% decline (-24) from 2024.
- Seres Therapeutics had 91 employees in 2024, a 11.2% decline (-72) from 2023.
- Seres Therapeutics had 163 employees in 2023, a 26.9% decline (-101) from 2022.
Seres Therapeutics's total workforce has declined from 256 employees in 2023 to 59 in 2026.
Seres Therapeutics, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 59 | -28 | -19.1% |
| 2025 | Q4 | 67 | -24 | -15.2% |
| 2025 | Q3 | 74 | -26 | -13.9% |
| 2025 | Q2 | 80 | -61 | -9.8% |
| 2025 | Q1 | 87 | -59 | -10.2% |
| 2024 | Q4 | 91 | -72 | -11.2% |
| 2024 | Q3 | 100 | -141 | -30.2% |
| 2024 | Q2 | 141 | -115 | -28.8% |
| 2024 | Q1 | 146 | -113 | -29.5% |
| 2023 | Q4 | 163 | -101 | -26.9% |
| 2023 | Q3 | 241 | -17 | -5.3% |
| 2023 | Q2 | 256 | +11 | -1.3% |
See Seres Therapeutics's complete headcount history, including quarterly breakdowns.
Get the DataSeres Therapeutics Employee Count by Region (2026)
North America accounts for the largest share of Seres Therapeutics's global workforce with approximately 95% of total employees, followed by South America and Western Europe.
Seres Therapeutics employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 55 | 94.8% |
| South America | 1 | 2.2% |
| Western Europe | 1 | 1.6% |
| Sub-Saharan Africa | 1 | 1.3% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataSeres Therapeutics Employee Count by Department (2026)
Seres Therapeutics's employee groups are Finance and Operations (56.2%), Sales and Marketing (23.4%), and Engineering (20.4%).
Seres Therapeutics employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 33 | 56.2% |
| Sales and Marketing | 14 | 23.4% |
| Engineering | 12 | 20.4% |
Compare Seres Therapeutics's department mix to industry peers.
See Full DataSeres Therapeutics Employee Salary by Region (2026)
Seres Therapeutics's average employee salary is $181,659 globally. Employees in North America receive the highest compensation. Pay is lowest in South America, at a median of $29,000.
Seres Therapeutics median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $164,000 |
| South America | $29,000 |
Unlock salary by role, level, and city — and compare to Seres Therapeutics's industry peers.
Unlock Salary DataSeres Therapeutics Job Openings and Hiring Trends (2023-2026)
- Seres Therapeutics had 2 active job postings in 2026, a 200.0% increase (+2) from 2025.
- Seres Therapeutics had 0 active job postings in 2025, a 200.0% decline (-1) from 2024.
- Seres Therapeutics had 1 active job postings in 2024, a 200.0% increase (+1) from 2023.
- Seres Therapeutics had 0 active job postings in 2023, a 200.0% decline from 2022.
- Hiring velocity in 2026: 2 new roles/month, up from 0 in 2025 and 1 in 2024.
Seres Therapeutics's active job postings rose 200.0% in 2026 to 2, with new postings per month cooling from 11 in 2023 to 2 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataSeres Therapeutics Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Seres Therapeutics's workforce based on public professional data. Overall sentiment is neutral and has improved 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 Seres Therapeutics
- How fast is Seres Therapeutics growing?
- In 2026, Seres Therapeutics's headcount shrank 19.1% to 59 employees, down from 87 in 2025.
- See the full headcount history
- Where are Seres Therapeutics employees located?
- Most Seres Therapeutics employees are based in North America (94.8% of headcount), followed by South America and Western Europe.
- Explore where the workforce is based
- What is the average salary at Seres Therapeutics?
- The average employee salary at Seres Therapeutics is approximately $181.7k per year.
- Analyze the salary distribution
- How many new job postings does Seres Therapeutics open per year?
- In Q1 2026, Seres Therapeutics opened 5 new job postings. In 2025, Seres Therapeutics opened 0 new job postings — about 0 per month.
- Track hiring trends by role
- When was Seres Therapeutics founded and where is it headquartered?
- Seres Therapeutics was founded in 2010 and is headquartered in Cambridge, Massachusetts.
- Compare Seres Therapeutics to industry peers
Speak with a workforce expert about Seres Therapeutics.
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