Ben Kartzman — Mediaocean

Ben Kartzman, formerly a key executive at Mediaocean, has departed the company to join Attain as President and Chief Operating Officer. Attain is a data and measurement company focused on connecting advertising exposure to real consumer purchasing behavior. Kartzman's move represents a significant leadership transition, as he was a long-tenured and senior figure at Mediaocean, where he served as Chief Operating Officer and played a central role in the company's growth and strategic direction over many years. His appointment at Attain signals the company's ambition to scale its operations and compete more aggressively in the outcomes-based advertising measurement space. Attain's platform leverages permissioned consumer purchase data to help advertisers understand the true ROI of their campaigns, a capability that has become increasingly valuable as third-party cookies deprecate and traditional measurement methods face scrutiny. Kartzman's deep experience in advertising infrastructure, agency relationships, and AdTech operations makes him a high-profile hire for a company looking to expand its footprint among major advertisers and agencies.

This leadership change carries meaningful implications for both Mediaocean and Attain. For Mediaocean, losing a senior COO-level executive with deep institutional knowledge and industry relationships is a notable disruption, though the company remains a dominant force in omnichannel advertising software and financial infrastructure for agencies. For Attain, bringing in Kartzman represents a strategic bet on operational maturity and enterprise credibility — qualities needed to win large agency and brand partnerships. The broader AdTech landscape is increasingly focused on privacy-compliant, deterministic measurement solutions, and Attain competes in a crowded field that includes companies like Numerator, Catalina, and NCSolutions. Kartzman's network and operational expertise could accelerate Attain's go-to-market efforts and help it differentiate in the outcomes measurement segment. This move also reflects a broader industry trend of talent migrating from established AdTech infrastructure players toward newer, data-driven measurement startups that are positioned to benefit from the post-cookie advertising environment.