Mergers and acquisitions in the B2B world are often the opposite of business as usual. These high-stakes moves can spark massive growth — or massive confusion. Integrating teams is hard enough. Now try integrating cultures, customer expectations, and two very different brand stories … all while keeping stakeholders aligned, employees on point, customers excited, and your competitors concerned.
This is where most M&A efforts fall flat: the branding and marketing. Get it wrong, and you risk alienating customers, demotivating employees, and muddying your message right when clarity is critical. But get it right — with the right agency — and you can turn that uncertainty into momentum.
That’s why we put together this list of the best M&A marketing agencies in the United States, considering key factors that include experience, case studies, depth of services, and client reputations. Of course, there are more than eight great agencies, but these top picks will help you get started in finding the right firm for you. If you need help with building alignment, simplifying complexity, or communicating with confidence — whether you’re uniting global giants or repositioning a niche B2B brand — these experts can help.
Let’s jump into the list.
Key Differentiator: Deep B2B and industrial expertise paired with creative brand strategy tailored for complex business changes.
Perfect For: Mid-market to enterprise-level industrial and B2B companies going through M&A, especially those needing rebranding, strategic messaging, or multi-stakeholder communication.
About Echo-Factory: Echo-Factory is a marketing and branding agency with a proven track record of guiding companies through high-stakes transitions — including mergers, acquisitions, rebrands, and pivots. They specialize in working with B2B, manufacturing, industrial, and aerospace clients, offering comprehensive services from brand audits to go-to-market strategies.
Headquartered In: Pasadena, CA
Team Size: ~25 employees
Key Services:
– M&A brand strategy and messaging
– Rebranding and identity design
– Website development
– Integrated marketing campaigns
– PR and media strategy
Client Work / Case Studies:
– Proponent: Aerospace M&A branding success
– Alkegen: Manufacturing brand repositioning
2. DeSantis Breindel
Key Differentiator: Strategy-first branding agency known for aligning brand with business transformation.
Perfect For: Financial services, healthcare, and B2B firms looking for strategic branding during mergers or acquisitions.
About DeSantis Breindel: Based in New York City, DeSantis Breindel brings a thoughtful, research-backed approach to branding during critical inflection points. Their work focuses on aligning internal stakeholders and articulating a compelling new brand story that reflects both legacy and future.
Headquartered In: New York, NY
Team Size: ~50 employees
Key Services:
– Brand research and stakeholder alignment
– Visual identity and messaging
– Brand architecture
– Internal and external communication strategy
Client Work / Case Studies:
– R1 RCM
– Enerflex
– Gibraltar Industries
3. FGS Global
Key Differentiator: World-class expertise in high-stakes M&A communications, including regulatory, employee, investor, and media strategy.
Perfect For: Enterprise-level corporations and publicly traded companies needing precise, integrated communications across multiple stakeholder groups during large-scale mergers or acquisitions.
About FGS Global: FGS Global is one of the world’s leading strategic communications consultancies, formed from the merger of Finsbury, Glover Park Group, Hering Schuppener, and Sard Verbinnen. With more than 27 offices worldwide, they specialize in financial communications, crisis management, public affairs, and investor relations. Their work is especially valuable for publicly traded firms or those navigating global or regulatory-intensive M&A activity.
Headquartered In: New York, NY
Team Size: 1,200+
Key Services:
– M&A communications strategy
– Stakeholder and investor engagement
– Regulatory and public affairs communications
– Executive messaging and change management
– Crisis and issues management
Client Work / Case Studies:
–
4. Tungsten Branding
Key Differentiator: Specialists in company naming and brand clarity for complex organizational structures.
Perfect For: Merged businesses needing a new brand name, narrative, or market position.
About Tungsten Branding: Naming and brand clarity are their specialties. Whether you need to rebrand under one unified name or to create a hybrid identity, Tungsten helps companies build brands that are memorable, strategic, and scalable.
Headquartered In: Brevard, NC
Team Size: ~10 employees
Key Services:
– Company naming
– Brand clarity and positioning
– Visual identity systems
– Brand strategy consulting
Client Work / Case Studies:
– ArcherHall
– AO Smith
5. Tenet Partners
Key Differentiator: Integrated brand and innovation firm with experience in post-merger brand unification.
Perfect For: Fortune 500 or global enterprises needing a highly structured, research-driven approach.
About Tenet Partners: Tenet combines brand strategy, research, and customer experience design to help companies merge with purpose. They offer brand valuation, governance tools, and stakeholder engagement programs.
Headquartered In: New York, NY
Team Size: ~80 employees
Key Services:
– Brand audits and valuation
– Brand architecture
– Customer experience and design
– M&A brand integration strategy
Client Work / Case Studies:
– Broadview Federal Credit Union
– Cotiviti
6. BrandActive
Key Differentiator: Specialists in brand implementation and cost management during M&A brand transitions.
Perfect For: Large, complex organizations that need help with executing a rebrand or brand consolidation after a merger or acquisition.
About BrandActive: BrandActive excels in the logistics of brand change. They work with large corporations to manage and implement post-M&A brand transitions — from signage and business cards to digital assets and fleet branding.
Headquartered In: Raleigh, NC & Toronto, ON
Team Size: ~100 employees
Key Services:
– Brand change cost modeling
– Brand implementation planning
– Rebranding program management
– Brand asset audits and tracking
Client Work / Case Studies:
– Eversource
– Telus
7. Siegel+Gale
Key Differentiator: Global agency known for brand simplification, particularly during complicated spin-offs.
Perfect For: Enterprise businesses seeking to unify brand portfolios during or after a merger, and/or spin off a brand.
About Siegel+Gale: A well-established name in global brand strategy, Siegel+Gale’s “Simple is Smart” approach makes them ideal for M&A branding where confusion and clutter can erode customer trust.
Headquartered In: New York, NY
Team Size: ~300 employees
Key Services:
– Brand research and strategy
– Naming and architecture
– Messaging and storytelling
– Visual identity design
– Experience and digital design
Client Work / Case Studies:
– Solventum
– HPE
8. Grafik
Key Differentiator: Strategic rebranding and communications support tailored to healthcare, technology, and mission-driven organizations navigating change.
Perfect For: Mid-market to large B2B companies, including finance and education, which need to align internal and external stakeholders with a new brand post-merger or acquisition.
About Grafik: Grafik is a Washington D.C.-based branding and marketing agency known for its ability to help complex organizations evolve their identities with confidence. With over 45 years in the industry, they bring deep experience to mergers, acquisitions, and other brand-defining moments.
Headquartered In: Alexandria, VA
Team Size: ~40 employees
Key Services:
– Brand strategy and repositioning
– M&A brand integration
– Internal communications
– Messaging platforms and visual identity
– Stakeholder and customer engagement campaigns
Client Work / Case Studies:
– HII
– Modern Campus
Picking the Right Branding, Naming, and Strategy Agency for Your M&A Process
Mergers and acquisitions don’t just change org charts — they change brand identities, market perceptions, customer expectations, and internal cultures. The right marketing agency can help you not only manage these changes but also use them as an opportunity to come out stronger, clearer, and more competitive.
If you’re planning an M&A — or are in the middle of one — and want expert guidance on how to handle branding, messaging, and marketing during the transition, these agencies are some of the best in the U.S. for the job.
Want Help With Choosing the Right M&A Branding Agency?
If you’re overwhelmed or unsure where to start, contact us. We’ve helped more than 30 organizations through mergers and acquisitions — and we can help you identify if we’re the best fit for your business goals and M&A situation.
