ClearStar
ClearStar, Inc. is a prominent HR technology company that specializes in background, drug, and health screening services for employment. Founded in 1995, ClearStar has evolved from its initial focus on web-based data solutions for the security industry to become a leading provider of comprehensive screening services across various sectors globally. The company offers a range of services, including criminal background checks tailored for different industries, automated drug and alcohol testing through its Medical Information Services platform, and technology-based solutions that enhance human capital management. ClearStar's Aurora platform integrates data from over 3,000 sources, providing employers with valuable insights and efficient management of screening workflows. ClearStar serves a diverse clientele, including major organizations like Toyota, IBM, and FedEx, and has expanded its reach through strategic partnerships and acquisitions, such as the 2022 acquisition of Employment Screening Resources. The company is committed to delivering excellent customer service and improving the candidate experience through its core values centered on data, technology, and results.
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Headcount trend
ClearStar went from 93 employees in Jul 2023 to 85 in Jun 2025. Jan to Jun 2025: 6 people joined, 3 left.
Headcount data through Jun 2025
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Headcount by department
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ClearStar FAQ
How many employees does ClearStar have?
ClearStar has about 85 employees, down 3.4% over the 3 months to Jun 2025.
What is ClearStar's revenue per employee?
ClearStar makes about $294K in revenue per employee, based on $25M annual revenue and 85 employees.
Is ClearStar a public company?
Yes. ClearStar is publicly traded under the ticker CLSU on LSE.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.