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Leo Sheridan

Leo Sheridan

Executive Chairman & CEO at Advanced Group, Co-Founder at AdaMarie

Sheridan
Chicago, Illinois
Joined December 2025
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4K connections
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Advanced Clinical Operations
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Advanced Corporate Functions
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Clinical Data Management
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Catena Solutions Consulting
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Advanced RPO Talent Acquisition
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Advanced Clinical Leadership
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Advanced Clinical Business Development

Summary

Leo Sheridan is a prominent entrepreneur and executive in the staffing and clinical research solutions industry, having founded Advanced Resources in 1988, which grew into the Advanced Group. He currently serves as Executive Chairman and CEO, leading a global provider of staffing, outsourcing, and clinical research services across four distinct businesses. advancedgroup+2
He is a recognized leader in the staffing sector, being included multiple times in Staffing Industry Analysts' (SIA) Staffing 100 List. His leadership extends to professional organizations, having served as Chairman of the American Staffing Association (ASA) Board of Directors, a role he held in 2020, and in other capacities such as First Vice Chairman and Treasurer. staffingindustry+2
Sheridan is a co-founder and Chairman of the Board of Directors for AdaMarie, a job board for women in STEM launched in 2021. This venture underscores his commitment to diversity, equity, and inclusion, particularly in advocating for women in STEM careers by leveraging his extensive experience in recruitment and corporate leadership. weareadamarie+1
Beyond his corporate roles, Leo Sheridan is actively involved in community and educational leadership, serving on the Board of Directors for the Cristo Rey Network and as a Member of the Board of Trustees for Robert Morris University since January 2015. He has also provided leadership to organizations like the Young Presidents' Organization and TechServe Alliance, demonstrating a broad commitment to professional development and social impact. cristoreynetwork+1

Work

Education

Notes

SMSally-Ann McDowellsaid
LSLeo Sheridan
is one of the most impressive senior leaders they've worked with in the pharma or biotech space.

Feb 11, 2026

SBSteve Blaisingsaid
LSLeo Sheridan
is one of the most impressive senior leaders they've worked with in the pharma or biotech space.

Feb 4, 2026

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