How many employees work at Seagen?

Seagen, Inc. has 944 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -17.1%.

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

About Seagen

Targeting Cancer. Transforming Therapies. Seagen is where revolutionary science meets transformative cancer therapy. Seagen is committed to advancing late-stage clinical trials and expanding the development of its portfolio both in and outside the U.S. to better the health of people with cancer. We are dedicated to improving patient outcomes through advanced antibody-drug conjugate technology designed to deliver cell-killing agents directly to tumor cells. We are focused on discovering, developing, manufacturing and commercializing targeted cancer therapeutics, with antibody-drug conjugates (ADCs) at our core. We work together with urgency to improve and extend the lives of people living with cancer. Our industry-leading antibody-drug conjugate (ADC) technology combines the specificity of monoclonal antibodies, innovative linker systems, and the power of potent cell-killing agents to treat cancer. Using our proprietary technology, we are able to optimize each ADC to potentially improve outcomes for patients. ADCs are an integral part of the evolving cancer treatment paradigm with their specificity, stability, and potency. We are working on expanding the four approved therapies for cancer while advancing new technologies with the potential to generate multiple Investigational New Drug Applications (INDs) that include next-generation ADC technologies and other novel cancer-targeting approaches.

As of December 2025

Seagen
workforce metrics

Headcount

944

Avg. Salary

$162.9k

Tenure

6.2yr

Growth Rate

-17.1%

Hiring Rate

Attrition Rate

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Employee Headcount

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

  • Seagen total number of employees in 2025 was 946, a 17.1% decline from 2024.
  • Seagen total number of employees in 2024 was 1,124, a 50.3% decline from 2023.
  • Seagen total number of employees in 2023 was 1,879, a 55.3% decline 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 Seagen annual active job postings from 2023 to 2025.

  • Seagen active job postings in 2025 was 121, a 143.3% increase from 2024.
  • Seagen active job postings in 2024 was 20, a 137.5% decline from 2023.
  • Seagen active job postings in 2023 was 108, a 87.8% decline from 2022.

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Employee Sentiment

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