How many employees work at Altimmune?
Altimmune, Inc. (ALT) has approximately 60 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Altimmune’s total headcount has grown 12.0% from 53 employees in 2023 to 60 in 2026.
Is Altimmune hiring right now?
No, Altimmune is not actively hiring. Altimmune had 0 active job postings in 2026, a 200.0% decline from 2025 — see job openings & hiring trends.
About Altimmune’s Workforce
Altimmune, Inc. (ALT) is a Pharmaceuticals company that employs 60 people worldwide as of March 2026. It is the 9th-largest by headcount among its peers. Founded in 1997, the company is headquartered in Gaithersburg, Maryland and trades on the NASDAQ.
Altimmune's workforce has grown 12.0% from 2023 to 2026, though it is down 0.9% year over year in 2026. It fell to a low of 51 in 2024 Q3 before recovering. Its workforce is concentrated most in North America (96.7%), followed by Northern Europe (2.3%) and South Asia (1.0%).
Altimmune's functional groups are Finance and Operations (60.4%), Sales and Marketing (22.0%), and Engineering (17.7%), with Finance and Operations growing fastest (up 14.3%). The average salary is $176,815, ranging from a median of $173,000 in North America to $85,000 in Northern Europe, down 1.6% year over year in 2026.
Altimmune's active job postings fell 200.0% in 2026 to 0, with new postings per month cooling from 2 in 2023 to 0 in 2026. Overall employee sentiment is negative and broadly stable.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: ALT
- Headquarters
- Gaithersburg, Maryland
- Founded
- 1997
- Industry
- Pharmaceuticals
- Employees
- 60
- YoY
- -0.9% (+5)
As of March 2026
Altimmune workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Altimmune. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsAltimmune Annual Employee Count (2023-2026)
- Altimmune had 60 employees in 2026, a 0.9% decline (+5) from 2025.
- Altimmune had 57 employees in 2025, a 1.1% increase (+5) from 2024.
- Altimmune had 52 employees in 2024, a 4.3% decline (-2) from 2023.
- Altimmune had 54 employees in 2023, a 0.9% increase (+4) from 2022.
Altimmune's total workforce has grown from 53 employees in 2023 to 60 in 2026.
Altimmune, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 60 | +5 | -0.9% |
| 2025 | Q4 | 57 | +5 | +1.1% |
| 2025 | Q3 | 56 | +5 | +1.6% |
| 2025 | Q2 | 55 | +2 | -2.6% |
| 2025 | Q1 | 55 | +3 | -0.2% |
| 2024 | Q4 | 52 | -2 | -4.3% |
| 2024 | Q3 | 51 | -2 | -3.1% |
| 2024 | Q2 | 53 | +0 | +0.9% |
| 2024 | Q1 | 52 | +1 | -1.4% |
| 2023 | Q4 | 54 | +4 | +0.9% |
| 2023 | Q3 | 53 | +8 | +1.3% |
| 2023 | Q2 | 53 | +9 | +0.1% |
See Altimmune's complete headcount history, including quarterly breakdowns.
Get the DataAltimmune Employee Count by Region (2026)
North America accounts for the largest share of Altimmune's global workforce with approximately 97% of total employees, followed by Northern Europe and South Asia.
Altimmune employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 57 | 96.7% |
| Northern Europe | 1 | 2.3% |
| South Asia | 1 | 1.0% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataAltimmune Employee Count by Department (2026)
Altimmune's employee groups are Finance and Operations (60.4%), Sales and Marketing (22.0%), and Engineering (17.7%).
Altimmune employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 36 | 60.4% |
| Sales and Marketing | 13 | 22.0% |
| Engineering | 11 | 17.7% |
Compare Altimmune's department mix to industry peers.
See Full DataAltimmune Employee Salary by Region (2026)
Altimmune's average employee salary is $176,815 globally. Employees in North America receive the highest compensation. Pay is lowest in Northern Europe, at a median of $85,000.
Altimmune median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $173,000 |
| Northern Europe | $85,000 |
Unlock salary by role, level, and city — and compare to Altimmune's industry peers.
Unlock Salary DataAltimmune Job Openings and Hiring Trends (2023-2026)
- Altimmune had 0 active job postings in 2026, a 200.0% decline (-3) from 2025.
- Altimmune had 3 active job postings in 2025, a 200.0% increase (+3) from 2024.
- Altimmune had 0 active job postings in 2024, a 200.0% decline (-2) from 2023.
- Altimmune had 2 active job postings in 2023, a 111.1% decline from 2022.
- Hiring velocity in 2026: 0 new roles/month, up from 0 in 2025 and 0 in 2024.
Altimmune's hiring is slowing: active job postings fell 200.0% in 2026 to 0, with new postings per month cooling from 2 in 2023 to 0 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataAltimmune Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Altimmune's workforce based on public professional data. Overall sentiment is negative 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 Altimmune
- How fast is Altimmune growing?
- In 2026, Altimmune's headcount shrank 0.9% to 60 employees, up from 55 in 2025.
- See the full headcount history
- Where are Altimmune employees located?
- Most Altimmune employees are based in North America (96.7% of headcount), followed by Northern Europe and South Asia.
- Explore where the workforce is based
- What is the average salary at Altimmune?
- The average employee salary at Altimmune is approximately $176.8k per year.
- Analyze the salary distribution
- How many new job postings does Altimmune open per year?
- In Q1 2026, Altimmune opened 0 new job postings. In 2025, Altimmune opened 5 new job postings — about 0 per month.
- Track hiring trends by role
- When was Altimmune founded and where is it headquartered?
- Altimmune was founded in 1997 and is headquartered in Gaithersburg, Maryland.
- Compare Altimmune to industry peers
Speak with a workforce expert about Altimmune.
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