Constellis Holdings Announces Appointment of Dan Gelston as CEO -- Security Today

Constellis Holdings Announces Appointment of Dan Gelston as CEO

Constellis Holdings has named Daniel Gelston CEO, with Terry Ryan transitioning to executive vice chairman, as the company accelerates technology-led growth focused on predictive analytics and AI-enabled security solutions.

Feb 09, 2026

Constellis Holdings LLC has announced Daniel Gelston has been appointed as CEO, effective immediately. Outgoing CEO Terry Ryan, will transition to the role of executive vice chairman, reporting to the Board of Directors. This planned leadership change ensures business continuity while accelerating the organization's next phase of technology-led growth.

"After a global search for the right individual to lead us into the future, the Board of Directors is pleased to name Daniel Gelston as Constellis' next CEO," said Michael Lundin, the Board's lead director. "Dan brings a unique combination of enterprise-level leadership, deep defense and security expertise gained through military service and private company leadership, and expertise in AI and data-driven solutions. Together, these strengths align perfectly with our critical mission supporting government and private sector customers. His strategic leadership will accelerate Constellis' transformation as we sharpen our focus to advance technology, data integrity, and leverage artificial intelligence to better serve customers and to anticipate evolving global challenges."

As CEO, Gelston will spearhead a strategic shift to integrate emerging technologies, specifically predictive analytics and AI-enabled operational insights into Constellis' core service delivery. By leveraging data as a strategic asset, the company aims to move beyond reactive security into a proactive model of tech-enabled prevention. This evolution optimizes human performance, and delivers measurable value across national security, critical infrastructure, and enterprise missions.

"I am honored to lead Constellis at this pivotal moment and grateful for the confidence the Board has placed in me," Gelston said. "This organization stands at the forefront of adaptive technology to enhance security and safety for national and global organizations. We are committed to enabling customer success by accelerating informed decision making, embedding AI innovation, and delivering integrated solutions. I look forward to collaborating with our experienced personnel and valued customers to outpace emerging threats and unlock new opportunities for impact and growth."

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