The Cook & Boardman Group Expands Market Presence with Assurance Media Acquisition

On April 1, 2026, Cook & Boardman Group LLC (C&B), the preeminent provider of integrated access and security solutions in the United States, proudly announced its acquisition of the majority of assets from Assurance Media LLC. Based in Wilmington, DE, Assurance Media specializes in structured cabling, audio-visual systems, and premises security, serving customers across Delaware and Pennsylvania since its inception in 2009.

David Eisner, Chief Executive Officer of Cook & Boardman, expressed enthusiasm about the acquisition, stating, “We are thrilled to welcome Assurance Media into the Cook & Boardman family. Assurance Media has long been recognized for excellence in service and innovative solutions, making them a perfect addition to our team. We look forward to collaborating with Mark, Jennifer, and the rest of the Assurance Media staff to reach new heights together.”

The former owner of Assurance Media, Mark Stellini, who will continue as the General Manager, emphasized the benefits of joining forces with C&B, noting, “Joining Cook & Boardman allows us to expand our reach while maintaining our commitment to exceptional service. This partnership is more than just a business deal; it’s an opportunity for growth and to create more value for our clients.”

The integration of Assurance Media signifies a key strategic milestone for Cook & Boardman. It marks the company's seventeenth acquisition since its majority stake was secured by Platinum Equity in 2023. This move is a testament to their ongoing commitment to expanding their footprint in the access and security solutions market, ensuring they can meet the increasing demand for innovative services across various sectors.

With over 80 locations nationwide and a strong online presence, Cook & Boardman is positioned to provide an extensive range of products and services, including commercial doors, frames, and advanced electronic access control systems. Assurance Media’s experience in structured cabling and security systems complements C&B's existing offerings, enhancing their ability to serve commercial properties that span healthcare, education, government, and hospitality sectors.

Moreover, the acquisition allows for a seamless transition for Assurance Media’s customers, as the business will continue to operate under its existing brand name. Clients can expect continuity in service, with established contacts remaining unchanged post-acquisition. This commitment to customer service further reinforces Cook & Boardman's reputation as a trusted partner in security solutions.

Platinum Equity, established in 1995 by Tom Gores and known for its robust investment strategy, MAO® (Mergers, Acquisitions, Operations), has played a crucial role in shaping Cook & Boardman's business strategy, facilitating numerous acquisitions to optimize its operational capabilities and market position.

In a landscape where security and access solutions are increasingly critical, the Cook & Boardman Group’s acquisition of Assurance Media is a forward-thinking step that promises not only to enhance its service portfolio but also to reflect its dedication to creating secure environments for clients across the nation. As both companies embark on this new chapter together, the focus will remain on delivering innovative, reliable, and comprehensive solutions in access and security.