How many employees work at X4 Pharmaceuticals?
X4 Pharmaceuticals, Inc. (XFOR) has approximately 45 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. X4 Pharmaceuticals’s total headcount has declined 29.1% from 63 employees in 2023 to 45 in 2026.
Is X4 Pharmaceuticals hiring right now?
Yes, X4 Pharmaceuticals is actively hiring. X4 Pharmaceuticals had 1 active job postings in 2026, a 120.0% decline from 2025 — see job openings & hiring trends.
About X4 Pharmaceuticals’s Workforce
X4 Pharmaceuticals, Inc. (XFOR) is a Pharmaceuticals company that employs 45 people worldwide as of March 2026. It is the 7th-largest by headcount among its peers. Founded in 2010, the company is headquartered in Boston, Massachusetts and trades on the NASDAQ.
X4 Pharmaceuticals's workforce has declined 29.1% from 2023 to 2026, down 18.3% year over year in 2026. It fell to a low of 45 in 2026 Q1 before recovering. Its workforce is concentrated most in North America (84.8%), followed by Western Europe (6.5%) and South Asia (3.1%).
X4 Pharmaceuticals's functional groups are Finance and Operations (53.9%), Sales and Marketing (26.1%), and Engineering (19.9%). The average salary is $185,273, ranging from a median of $200,000 in North America to $103,000 in Western Europe, down 3.8% year over year in 2026.
X4 Pharmaceuticals's active job postings fell 120.0% in 2026 to 1, with new postings per month cooling from 5 in 2023 to 1 in 2026. Overall employee sentiment is neutral but declining.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: XFOR
- Headquarters
- Boston, Massachusetts
- Founded
- 2010
- Industry
- Pharmaceuticals
- Employees
- 45
- YoY
- -18.3% (-29)
As of March 2026
X4 Pharmaceuticals workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for X4 Pharmaceuticals. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsX4 Pharmaceuticals Annual Employee Count (2023-2026)
- X4 Pharmaceuticals had 45 employees in 2026, a 18.3% decline (-29) from 2025.
- X4 Pharmaceuticals had 45 employees in 2025, a 26.2% decline (-45) from 2024.
- X4 Pharmaceuticals had 90 employees in 2024, a 5.6% increase (+19) from 2023.
- X4 Pharmaceuticals had 71 employees in 2023, a 6.1% increase (+13) from 2022.
X4 Pharmaceuticals's total workforce has declined from 63 employees in 2023 to 45 in 2026. X4 Pharmaceuticals's headcount peaked at 90 in 2024.
X4 Pharmaceuticals, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 45 | -29 | -18.3% |
| 2025 | Q4 | 45 | -45 | -26.2% |
| 2025 | Q3 | 50 | -39 | -22.4% |
| 2025 | Q2 | 67 | -19 | -10.7% |
| 2025 | Q1 | 74 | -10 | -8.0% |
| 2024 | Q4 | 90 | +19 | +5.6% |
| 2024 | Q3 | 89 | +20 | +4.4% |
| 2024 | Q2 | 86 | +23 | +7.0% |
| 2024 | Q1 | 84 | +23 | +9.4% |
| 2023 | Q4 | 71 | +13 | +6.1% |
| 2023 | Q3 | 69 | +11 | +7.9% |
| 2023 | Q2 | 63 | -6 | -2.2% |
See X4 Pharmaceuticals's complete headcount history, including quarterly breakdowns.
Get the DataX4 Pharmaceuticals Employee Count by Region (2026)
North America accounts for the largest share of X4 Pharmaceuticals's global workforce with approximately 85% of total employees, followed by Western Europe and South Asia.
X4 Pharmaceuticals employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 38 | 84.8% |
| Western Europe | 3 | 6.5% |
| South Asia | 1 | 3.1% |
| Sub-Saharan Africa | 1 | 1.5% |
| South America | 1 | 1.4% |
| Eastern Europe | 1 | 1.4% |
| Arab States | 1 | 1.3% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataX4 Pharmaceuticals Employee Count by Department (2026)
X4 Pharmaceuticals's employee groups are Finance and Operations (53.9%), Sales and Marketing (26.1%), and Engineering (19.9%).
X4 Pharmaceuticals employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 24 | 53.9% |
| Sales and Marketing | 11 | 26.1% |
| Engineering | 9 | 19.9% |
Compare X4 Pharmaceuticals's department mix to industry peers.
See Full DataX4 Pharmaceuticals Employee Salary by Region (2026)
X4 Pharmaceuticals's average employee salary is $185,273 globally. Employees in North America receive the highest compensation. Pay is lowest in Western Europe, at a median of $103,000.
X4 Pharmaceuticals median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $200,000 |
| Western Europe | $103,000 |
Unlock salary by role, level, and city — and compare to X4 Pharmaceuticals's industry peers.
Unlock Salary DataX4 Pharmaceuticals Job Openings and Hiring Trends (2023-2026)
- X4 Pharmaceuticals had 1 active job postings in 2026, a 120.0% decline from 2025.
- X4 Pharmaceuticals had 1 active job postings in 2025, a 173.3% decline (-13) from 2024.
- X4 Pharmaceuticals had 14 active job postings in 2024, a 33.3% increase (+4) from 2023.
- X4 Pharmaceuticals had 10 active job postings in 2023, a 10.5% increase from 2022.
- Hiring velocity in 2026: 1 new roles/month, down from 2 in 2025 and 6 in 2024.
X4 Pharmaceuticals's hiring is slowing: active job postings fell 120.0% in 2026 to 1, with new postings per month cooling from 5 in 2023 to 1 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataX4 Pharmaceuticals Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across X4 Pharmaceuticals's workforce based on public professional data. Overall sentiment is neutral and has declined 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 X4 Pharmaceuticals
- How fast is X4 Pharmaceuticals growing?
- In 2026, X4 Pharmaceuticals's headcount shrank 18.3% to 45 employees, down from 74 in 2025.
- See the full headcount history
- Where are X4 Pharmaceuticals employees located?
- Most X4 Pharmaceuticals employees are based in North America (84.8% of headcount), followed by Western Europe and South Asia.
- Explore where the workforce is based
- What is the average salary at X4 Pharmaceuticals?
- The average employee salary at X4 Pharmaceuticals is approximately $185.3k per year.
- Analyze the salary distribution
- How many new job postings does X4 Pharmaceuticals open per year?
- In Q1 2026, X4 Pharmaceuticals opened 2 new job postings. In 2025, X4 Pharmaceuticals opened 20 new job postings — about 2 per month.
- Track hiring trends by role
- When was X4 Pharmaceuticals founded and where is it headquartered?
- X4 Pharmaceuticals was founded in 2010 and is headquartered in Boston, Massachusetts.
- Compare X4 Pharmaceuticals to industry peers
Speak with a workforce expert about X4 Pharmaceuticals.
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