Director of Executive Protection and Vulnerability Assessment

Jeff Tarr

Director of Executive Protection and Vulnerability Assessment

Director of Executive Protection and Vulnerability Assessment Jeff Tarr, brings almost 35 years of federal law enforcement experience. His responsibilities include overseeing the coordination of protection and threat assessments for our clients. During his time as a Senior Special Agent with the U.S. Secret Service, Jeff provided site and security plans for the highest-ranking U.S. …

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Nick Oyervides

Nick Oyervides

Senior Operations Manager

Nick Oyervides serves as the Senior Operations Manager at P4 Companies, where his responsibilities encompass a diverse range of establishments, including distribution centers, commercial buildings, residential buildings, malls, and more. With over 16 years of experience in the security industry, Nick began his career as an Area Supervisor with G4S Secure Solutions, based in Downtown Chicago. In this role, …

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William Jefferson Headshot

William Jefferson

Senior Operations Manager

William “BJ” Jefferson is a Senior Operations Manager. William comes to us with over 30 years of experience in the security industry. Security is only a portion of the experience he brings with him. He also served in the United States Air Force and US Army Reserves where he obtained a degree in Logistics Management. …

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Joseph Gioulos

Joseph Gioulos

Scheduling Specialist

Joseph Gioulos is a dedicated security professional serving as a Scheduling Specialist at P4 Companies. With a background rooted in customer service, sales, and a commitment to operational excellence, Joe plays a pivotal role in ensuring seamless staffing and coverage across distinct portfolios within the company. Joe began working at P4 in 2021, initially joining …

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Kurt Kourakis

Supervisor of Off Duty/Retired Services

Kurt joined P4 Security Solutions as Supervisor of Off Duty/Retired Services. Kurt recently retired after a distinguished career, spanning more than three decades with the Chicago Police Department and has been defined by a relentless pursuit of justice and security. Throughout Kurt’s tenure, he was assigned to the Bureau of Detectives, where he delved into a …

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Howard Denham

Howard Denham

Field Operations Manager

Howard Denham presently serves as our Field Operations Manager, responsible for leading the Field Supervisor team. His role encompasses conducting compliance audits, overseeing security personnel within designated P4 portfolios, and fostering strong partnerships to unite staff towards common objectives. Howard contributes his expertise in strategic implementation and clear communication to create growth opportunities. With an …

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Shamanda Blue

Shamanda Blue


Shamanda Blue is a Recruiting Professional with over 10 years of recruiting and talent acquisition experience. Currently, she works for P4 as a recruiting professional in the security industry. Shamanda plays a critical role in identifying talent and staffing needs while collaborating with the Human Resources team. Prior to joining P4, Shamanda has worked for …

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Steve Castans

Director of Client Relations

Steve Castans comes to P4 with over 30 years in law enforcement and 20 years in private security. Steve started his career in law enforcement with Cook County where he attained the rank of Patrolman, Sergeant, Lieutenant, Commander, and Chief of Police for 20 years. He is a graduate of the FBI National Academy, 153 …

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Rick Marty

Operations Manager of Off-Duty Law Enforcement

Rick Marty is currently the Operations Manager for Off Duty Law Enforcement Officers and an Instructor for P4 Security Solutions.  Rick has 28 years combined experience with the Illinois Department of Corrections (IDOC) and the Illinois Department of Juvenile Justice (IDJJ), with the last 18 years at a Supervisory/ Administrative level.  Rick has always had …

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Mary Valas

Mary Valas

Senior Director of Human Resources

Mary Valas is the Senior Director of Human Resources, joining P4 Companies in 2021. She is a strategic business partner serving as leader, consultant, resource and authority on HR policies, practices, resources, and transactions. She is responsible for developing, implementing, and maintaining HR initiatives that support efficient operations, planning and execution, and maximize individual and …

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