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Brian Mandelbaum — Attain

Leadership Change

Brian Mandelbaum is now at Attain.

Last updated Jun 20, 2026 by ATDb automated enrichment · Connections updated Jun 22, 2026

Overview

Brian Mandelbaum joined Attain as CEO, marking a significant leadership appointment for the consumer data and purchase-based targeting company. Mandelbaum previously served as CEO of Clearstream.tv, a video advertising platform, and has a deep background in digital advertising and media technology. His move to Attain signals the company's ambition to scale its commerce data and measurement capabilities under experienced executive leadership with a strong track record in AdTech. Attain is a fintech-meets-AdTech platform that leverages permissioned consumer financial transaction data to power advertising targeting and measurement. The company enables advertisers to reach consumers based on actual purchase behavior and measure real sales outcomes, positioning itself at the intersection of identity resolution, commerce data, and outcome-based advertising. Mandelbaum's appointment as CEO reflects Attain's growth trajectory and its need for seasoned leadership to compete in the increasingly crowded purchase-based data and measurement space. This leadership change is notable given the broader industry shift toward privacy-compliant, first-party and permissioned data solutions as third-party cookies deprecate. Attain's model — built on consumer-consented financial data — aligns well with where the industry is heading, and Mandelbaum's experience navigating AdTech transitions makes him a strategically relevant choice to lead the company through its next phase of growth.

Impact analysis

Mandelbaum's arrival at Attain reinforces the growing importance of purchase-based and transaction-level data in the AdTech ecosystem. As the industry moves away from cookie-based targeting, platforms like Attain that offer permissioned, deterministic consumer data are becoming increasingly attractive to both advertisers and investors. His leadership could accelerate Attain's commercial partnerships, enterprise sales efforts, and potential fundraising or M&A activity. Competitively, this positions Attain more aggressively against players like Cardlytics, Affinity Solutions, and NielsenIQ in the commerce data and closed-loop measurement space. It also signals maturation of the permissioned data segment as a serious alternative to legacy identity and targeting infrastructure.

Deal details

Market Segment
Commerce data, purchase-based targeting, identity, measurement

Key people

Brian Mandelbaum — CEO, AttainBrian Mandelbaum — former CEO, Clearstream.tv

Related companies

Clearstream.tvCardlyticsAffinity SolutionsNielsenIQExperian

Source

https://web.archive.org/web/20240130175134/https://www.linkedin.com/in/brianmandelbaum