Christopher Callahan is the Chief Information Security Officer for Weichert Companies, leading cybersecurity, privacy, risk management, and compliance initiatives across the organization. A trusted advisor to executive leadership, he develops security strategies that align with business objectives, strengthen governance, and reduce risk. With experience spanning real estate, financial services, pharmaceuticals, software, and banking, Christopher has built and matured enterprise security programs, optimized operations, and driven measurable business value through effective risk management and cybersecurity leadership.
2026 NewYorkCISO ORBIE Awards · Corporate Finalist
Christopher Callahan
CISO
Weichert Companies
Built and matured an enterprise information security program, achieving key regulatory and compliance objectives while strengthening security governance and risk management. Established cross-functional security oversight, implemented advanced security monitoring and incident response capabilities, and developed a resilient business continuity framework supported by regular exercises. Enhanced third-party risk management, identity and access controls, and enterprise security policies to align with business needs. Leveraged existing technology investments to improve threat detection, response, and overall security posture while promoting a culture of accountability, operational resilience, and continuous improvement across the organization.












