How many employees work at Atara Biotherapeutics?
Atara Biotherapeutics, Inc. (ATRA) has approximately 14 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Atara Biotherapeutics’s total headcount has declined 73.8% from 52 employees in 2023 to 14 in 2026.
Is Atara Biotherapeutics hiring right now?
No, Atara Biotherapeutics is not actively hiring. Atara Biotherapeutics had 0 active job postings in 2026, a 0.0% no change from 2025 — see job openings & hiring trends.
About Atara Biotherapeutics’s Workforce
Atara Biotherapeutics, Inc. (ATRA) is a Pharmaceuticals company that employs 14 people worldwide as of March 2026. It is the 11th-largest by headcount among its peers. Founded in 2012, the company is headquartered in Thousand Oaks, California and trades on the NASDAQ.
Atara Biotherapeutics's workforce has declined 73.8% from 2023 to 2026, down 25.3% year over year in 2026. It fell to a low of 14 in 2026 Q1 before recovering. Its workforce is concentrated most in North America (93.5%), followed by Pacific Islands (1.8%) and South Asia (1.5%).
Atara Biotherapeutics's functional groups are Finance and Operations (50.5%), Sales and Marketing (27.0%), and Engineering (22.6%). The average salary is $184,926, highest in North America at a median of $153,000, down 3.6% year over year in 2026.
Atara Biotherapeutics's hiring activity held steady in 2026. Overall employee sentiment is negative and declining.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: ATRA
- Headquarters
- Thousand Oaks, California
- Founded
- 2012
- Industry
- Pharmaceuticals
- Employees
- 14
- YoY
- -25.3% (-7)
As of March 2026
Atara Biotherapeutics workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Atara Biotherapeutics. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsAtara Biotherapeutics Annual Employee Count (2023-2026)
- Atara Biotherapeutics had 14 employees in 2026, a 25.3% decline (-7) from 2025.
- Atara Biotherapeutics had 14 employees in 2025, a 40.3% decline (-16) from 2024.
- Atara Biotherapeutics had 30 employees in 2024, a 14.8% decline (-12) from 2023.
- Atara Biotherapeutics had 42 employees in 2023, a 12.0% decline (-12) from 2022.
Atara Biotherapeutics's total workforce has declined from 52 employees in 2023 to 14 in 2026.
Atara Biotherapeutics, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 14 | -7 | -25.3% |
| 2025 | Q4 | 14 | -16 | -40.3% |
| 2025 | Q3 | 15 | -17 | -39.7% |
| 2025 | Q2 | 17 | -16 | -31.5% |
| 2025 | Q1 | 21 | -13 | -20.3% |
| 2024 | Q4 | 30 | -12 | -14.8% |
| 2024 | Q3 | 32 | -18 | -24.8% |
| 2024 | Q2 | 33 | -19 | -24.8% |
| 2024 | Q1 | 34 | -19 | -23.8% |
| 2023 | Q4 | 42 | -12 | -12.0% |
| 2023 | Q3 | 50 | -7 | -4.3% |
| 2023 | Q2 | 52 | -16 | -6.0% |
See Atara Biotherapeutics's complete headcount history, including quarterly breakdowns.
Get the DataAtara Biotherapeutics Employee Count by Region (2026)
North America accounts for the largest share of Atara Biotherapeutics's global workforce with approximately 94% of total employees, followed by Pacific Islands and South Asia.
Atara Biotherapeutics employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 12 | 93.5% |
| Pacific Islands | 0 | 1.8% |
| South Asia | 0 | 1.5% |
| Sub-Saharan Africa | 0 | 1.3% |
| Western Europe | 0 | 1.2% |
| Southern Europe | 0 | 0.6% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataAtara Biotherapeutics Employee Count by Department (2026)
Atara Biotherapeutics's employee groups are Finance and Operations (50.5%), Sales and Marketing (27.0%), and Engineering (22.6%).
Atara Biotherapeutics employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 7 | 50.5% |
| Sales and Marketing | 4 | 27.0% |
| Engineering | 3 | 22.6% |
Compare Atara Biotherapeutics's department mix to industry peers.
See Full DataAtara Biotherapeutics Employee Salary by Region (2026)
Atara Biotherapeutics's average employee salary is $184,926 globally. Employees in North America receive the highest compensation.
Atara Biotherapeutics median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $153,000 |
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Unlock Salary DataAtara Biotherapeutics Job Openings and Hiring Trends (2023-2026)
- Atara Biotherapeutics had 0 active job postings in 2026, a 0% no change from 2025.
- Atara Biotherapeutics had 0 active job postings in 2025, a 200.0% decline (-1) from 2024.
- Atara Biotherapeutics had 1 active job postings in 2024, a 120.0% decline (-3) from 2023.
- Atara Biotherapeutics had 4 active job postings in 2023, a 154.3% decline from 2022.
- Hiring velocity in 2026: 0 new roles/month, up from 0 in 2025 and 2 in 2024.
Atara Biotherapeutics's hiring activity held steady in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataAtara Biotherapeutics Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Atara Biotherapeutics's workforce based on public professional data. Overall sentiment is negative 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 Atara Biotherapeutics
- How fast is Atara Biotherapeutics growing?
- In 2026, Atara Biotherapeutics's headcount shrank 25.3% to 14 employees, down from 21 in 2025.
- See the full headcount history
- Where are Atara Biotherapeutics employees located?
- Most Atara Biotherapeutics employees are based in North America (93.5% of headcount), followed by Pacific Islands and South Asia.
- Explore where the workforce is based
- What is the average salary at Atara Biotherapeutics?
- The average employee salary at Atara Biotherapeutics is approximately $184.9k per year.
- Analyze the salary distribution
- How many new job postings does Atara Biotherapeutics open per year?
- In Q1 2026, Atara Biotherapeutics opened 0 new job postings. In 2025, Atara Biotherapeutics opened 0 new job postings — about 0 per month.
- Track hiring trends by role
- When was Atara Biotherapeutics founded and where is it headquartered?
- Atara Biotherapeutics was founded in 2012 and is headquartered in Thousand Oaks, California.
- Compare Atara Biotherapeutics to industry peers
Speak with a workforce expert about Atara Biotherapeutics.
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