How many employees work at Arrowhead Pharmaceuticals?

Arrowhead Pharmaceuticals, Inc. has 729 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 22.5%.

Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025

About Arrowhead Pharmaceuticals

Arrowhead Pharmaceuticals is a clinical stage, Nasdaq listed (ticker ARWR) company developing medicines that treat intractable diseases by silencing the genes that cause them. Using a broad portfolio of RNA chemistries and efficient modes of delivery, our therapies trigger the RNA interference mechanism to induce rapid, deep and durable knockdown of target genes. RNA interference, or RNAi, is a mechanism present in living cells that inhibits the expression of a specific gene, thereby affecting the production of a specific protein. Our RNAi-based therapeutics are at the leading edge of genetic-based therapy with the potential to bring life changing treatments for patients. Our Targeted RNAi Molecule (TRiMTM) platform utilizes ligand-mediated delivery and is designed to enable tissue-specific targeting while being structurally simple. The TRiM platform builds on more than a decade of work on actively targeted drug delivery and offers several advantages including simplified manufacturing and reduced costs; multiple routes of administration; and potential for improved safety. Our employees are nimble, science-driven, and innovative professionals. A career at Arrowhead offers the opportunity to collaborate with top notch scientists to rapidly discover and develop RNAi-based therapeutics to add to our growing pipeline. Arrowhead’s corporate headquarters is located in Pasadena, CA. Just north of Los Angeles and resting in the foothills of the San Gabriel Mountains, Pasadena is known for its natural scenic beauty, vibrant cultural and academic environment, and rich architectural setting. Research and development activities are in Madison, WI and San Diego, California. Arrowhead’s research and development group includes fully integrated capabilities for chemistry, biology, ADME, and toxicology. We have invested heavily in our research workspaces to make sure our top-notch scientists can continue to quickly change the world in meaningful ways.

As of December 2025

Arrowhead Pharmaceuticals
workforce metrics

Headcount

729

Avg. Salary

$137.9k

Tenure

2.4yr

Growth Rate

22.5%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Arrowhead Pharmaceuticals annual worldwide employee count from 2023 to 2025.

  • Arrowhead Pharmaceuticals total number of employees in 2025 was 730, a 22.5% increase from 2024.
  • Arrowhead Pharmaceuticals total number of employees in 2024 was 583, a 7.8% increase from 2023.
  • Arrowhead Pharmaceuticals total number of employees in 2023 was 539, a 21.6% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Arrowhead Pharmaceuticals annual active job postings from 2023 to 2025.

  • Arrowhead Pharmaceuticals active job postings in 2025 was 42, a 89.7% increase from 2024.
  • Arrowhead Pharmaceuticals active job postings in 2024 was 16, a 91.5% decline from 2023.
  • Arrowhead Pharmaceuticals active job postings in 2023 was 43, a 59.0% decline from 2022.

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Employee Sentiment

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