RFE Investment Partners-backed ZRG has acquired Sterling Martin Associates, a Washington, DC-based executive search firm that specializes in professional associations, trade organizations, and mission-driven nonprofits. Founder and CEO David Martin will join ZRG as managing director, expanding the talent advisor's reach into mission-critical sectors.

Sterling Martin was founded in 2006 and has spent nearly two decades advising organizations including the National PTA, the Society for Neuroscience, and the American Association of Veterinary Medical Colleges. RFE Investment Partners backs ZRG, which is headquartered in Rochelle Park, New Jersey and operates as a global talent advisor.

David Martin's move to ZRG as managing director signals the firm's intent to deepen its footprint among nonprofit and association clients where it already has a presence. This acquisition strengthens ZRG's position in a specialized corner of executive search that RFE Investment Partners is clearly prioritizing.