Companies

Direct-response and performance-marketing agency within the Havas Creative Network. Offices in Carlsbad, Boston, and Portland.

PR agency within the Havas Creative Network. Offices in El Segundo, New York, and San Diego.

Havas's health, pharma, and wellness communications sub-network. Restructured 2024-25 into three operating sub-units: Havas Life, Havas Lynx, and Jacques (named after Jacques Séguéla).

Global health communications agency within the Havas Health Network.

Distinct creative agency within Havas Creative Network; standalone brand identity (lon.havas.com).

Digital health brand-transformation agency within the Havas Health Network. Strengthened with new North America leadership 2025.

Havas Media is the global media network of Havas Group, offering integrated media planning, buying, and data-driven advertising solutions across 140+ countries.

Sports, sponsorship, gaming, and entertainment-marketing arm within Havas Media. Rebranded from 'Havas Sports & Entertainment' to 'Havas Play'.

Havas PR is a global public relations network operating under the Havas Group umbrella, delivering integrated communications, media relations, and reputation management services.

Hawk (formerly TabMo) is a French omnichannel advertising technology company and demand-side platform (DSP), headquartered in Paris. Its buying platform lets media agencies and advertisers plan, activate, and optimize campaigns across display, video, audio, digital out-of-home (DOOH), connected TV (CTV), and in-game inventory from a single interface. Hawk was acquired by Azerion in October 2023.

Home Box Office (HBO) is the premium cable TV brand under Warner Bros. Discovery. Launched 1972. Notable shows: Game of Thrones, The Sopranos, Succession, The Last of Us. Distinct from HBO Max streaming (the streaming service brand).

HBO Max is Warner Bros. Discovery's flagship premium streaming service. Complex naming history: HBO Max launched May 2020 → renamed Max May 2023 (when Discovery+ was merged in) → renamed BACK to HBO Max July 9, 2025. Major CTV ad surface (ad-supported tier launched June 2021).

Healthgrades is a leading online platform connecting patients with healthcare providers through physician ratings, reviews, and appointment scheduling.

Healthline FindCare is a healthcare provider directory and patient acquisition platform that connects consumers with healthcare providers through Healthline Media's health information network.

Healthline Media is a leading digital health publisher providing consumer health information and operating advertising-supported health content websites.

Healthcare real-world-data and identity company; acquired Symphony Health from ICON in 2026.

Heap is a digital insights platform that automatically captures every user interaction on web and mobile apps, eliminating the need for manual event tracking instrumentation.

Heap Premier is the enterprise-tier offering of Heap's advanced digital analytics platform, designed specifically for large-scale organizations that require comprehensive user behavior intelligence without manual event tracking constraints. The platform's revolutionary approach centers on automatic event capture technology that retroactively collects and indexes every user interaction across digital properties, enabling analysts to query historical data for events that weren't explicitly defi...

Data-led media agency built for AT&T account 2016; specialist scale, smaller than OMD/PHD. Operates under Omnicom Media post-merger.

San Francisco creative agency, founded 2004, acquired by Deloitte Digital Feb-Mar 2016 (11th Deloitte Digital acquisition). Multi-Cannes-Lions winner. Operates under Heat brand within Deloitte Digital; opened NYC office post-acquisition. Sources: PR Newswire + The Drum + AdWeek.

Hedera Hashgraph is an enterprise-grade public distributed ledger technology platform that provides a fundamentally different approach to blockchain consensus mechanisms. Unlike traditional blockchain architectures, Hedera utilizes the patented Hashgraph consensus algorithm, which enables high-throughput transaction processing with low latency, fair transaction ordering, and enhanced security guarantees. The platform is designed to support a wide range of decentralized applications, including...

Heepsy is a specialized influencer marketing platform that empowers brands, agencies, and marketers to discover, analyze, and evaluate influencers across Instagram and YouTube. The platform combines advanced search functionality with comprehensive analytics capabilities, enabling users to filter potential influencer partners based on critical criteria including audience demographics, engagement rates, follower authenticity, geographic location, and niche categories. By providing transparent a...

Heimat Berlin is an independent German creative agency known for bold, culturally resonant advertising campaigns with a strong strategic and creative foundation.

B2B marketing consultancy specializing in pipeline generation, sales enablement, and revenue acceleration for technology and SaaS companies.