Hightouch, the San Francisco-based data activation startup, has made an unsolicited $1.2 billion offer to acquire a major data asset from advertising giant Publicis Groupe, Maddyness has learned. The proposal, delivered to Publicis CEO Arthur Sadoun in late February, targets the group’s Epsilon data marketing unit — the core of its digital identity and personalization business — and marks a dramatic escalation in the collision between cloud-native data platforms and legacy adtech infrastructure.

Founded in 2020 by Tejas Manohar, Josh Curl, and Kashish Gupta, Hightouch pioneered the “reverse ETL” category, allowing companies to sync data from cloud warehouses directly into operational tools without custom coding. Its platform has become a darling of data teams at firms like Spotify, PepsiCo, and the NBA, helping it raise over $100 million from investors including ICONIQ Growth, Amplify Partners, and Bain Capital Ventures at a near-unicorn valuation. The startup now processes billions of customer records daily and has been quietly building out a composable customer data platform (CDP) — a vision that puts it on a collision course with established marketing clouds.

The $1.2 billion offer, structured as a mix of cash, stock, and assumed liabilities, would see Hightouch absorb Epsilon’s identity graph, transactional data assets, and consent management framework, while leaving Publicis with its core media and creative agencies. According to a person familiar with the talks, Hightouch would then integrate Epsilon’s 250 million+ US consumer profiles into its warehouse-native platform, enabling brands to activate audiences directly from Snowflake, Databricks, or BigQuery without moving data to an external CDP. “This is about unbundling the legacy stack,” the source said. “Epsilon’s data is a jewel — but locked inside a walled garden. Hightouch wants to make it interoperable, cloud-agnostic, and privacy-first.”

Publicis has not publicly acknowledged the offer, but an internal memo from Sadoun, seen by Maddyness, described the approach as “opportunistic” and confirmed the board would review it alongside ongoing strategic options for Epsilon. The unit, acquired in 2019 for $4.4 billion, generated roughly $1.5 billion in revenue last year, yet growth has slowed as brands migrate to first-party data strategies and demand more flexible, transparent tools. Analysts note that Epsilon’s valuation may have compressed amid privacy regulation and the deprecation of third-party cookies, making a $1.2 billion tag — just over a quarter of the purchase price — a possible, if painful, writedown.

The startup’s gambit underscores a broader power shift in marketing technology. As data gravity moves to the warehouse, Hightouch and its ilk threaten to commoditize the once-essential layer of proprietary CDPs and identity resolution services. “Hightouch’s offer is not just about Epsilon — it’s a signal that the future of adtech is composable, and anyone sitting on a closed identity graph needs an exit strategy,” said Melissa Parrish, VP of research at Forrester. For Publicis, selling Epsilon at a loss would be a bitter pill, but it could free resources to double down on AI-driven media buying and content personalization, areas where it sees stronger growth.

Quotes attributed to those close to Hightouch suggest the move was motivated as much by ideology as tactics. “The idea that a brand’s most sensitive customer data should be siloed in a cookie-dependent platform is archaic,” one Hightouch executive said. The startup’s offer includes a commitment to rebuild Epsilon’s graph on Apache Iceberg, an open table format, and to provide clients with real-time, warehouse-resident audience assembly. That would directly challenge incumbents like Adobe and Salesforce, which rely on their own CDPs to keep data flowing through their ecosystems.

If the deal moves forward, it would reshape the competitive landscape overnight. A successful integration would give Hightouch a massive deterministic identity asset — potentially fifty times the scale of anything built from commercial intent data alone — while potentially triggering a wave of consolidation as cloud-native platforms devour legacy data marts. The risk, however, is significant: Epsilon’s infrastructure is deeply entwined with Publicis’s media execution, and disentangling it would be a multi-year engineering undertaking. Moreover, antitrust scrutiny over the combination of a fast-growing data activation tool with a vast consumer graph would be intense on both sides of the Atlantic.

Publicis has yet to set a formal deadline for a response, but the board is expected to weigh the offer against a rumored plan to spin off Epsilon into a standalone entity or seek a strategic partnership with a hyperscaler. While a deal at this price seems unlikely to satisfy shareholders still smarting from the premium paid in 2019, the Hightouch proposal has forced a conversation about what Epsilon is truly worth in a world that increasingly demands composability, transparency, and control. As one board observer put it: “The old model was about hoarding data; the new one is about activating it wherever it lives. Hightouch is betting that dream is worth north of a billion dollars — and that Publicis might just take the money.”

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