Sia Partners pursues its international development with the acquisition of a creative agency in New York

PARIS & NEW YORK–(BUSINESS WIRE)–Less than three months after its launch, SiaXperience, the group’s design and creativity brand, acquires the New York creative agency Addison, specializing in ESG communication (50 designers, $12 million / €11.5 million turnover ).

First acquisition for SiaXperience

In March 2022, the group brought together all its design, creativity and customer experience skills under a single brand, SiaXperience (, in 10 design centers: Paris, San Francisco Bay, Montreal, London, Los Angeles, Hong Kong, Amsterdam, Lyon, Seattle.

SiaXperience’s ambition is to develop connectivity between brands and consumers, with a powerful analytical bias at the service of best practices in creativity and design. The offer is structured around three service lines: Digital Marketing, Collaborative Design and Growth Strategy.

Addison, founded in 1962 in New York and managed by Roger Byrom, has around fifty employees and specializes in digital financial communication. He is one of the pioneers of ESG financial communication, working for major players such as Blackrock, Brookfield and PepsiCo. Addison will generate approximately $12 million in revenue (€11.5 million) in 2022.

The integration of Addison creates a fourth line of services within SiaXperience, dedicated to ESG communication. This acquisition allows us to establish an 11th design center, based in New York.

The Addison brand will continue to operate independently during the integration process within SiaXperience. Roger Byrom joins SiaXperience’s global leadership team.

“With just over €30 million in revenue and 7% of the group’s business, this merger confirms the development of a solid third business line, alongside management and strategy consulting and ‘artificial intelligence. Our consulting origin defines our specific added value, thanks to the contribution of our experts and our business strategists who work hand in hand with the creative people. The integrated operation of our 11 design centers is a key differentiator for international brands,” says Matthieu Courtecuisse. “We are happy to develop a dedicated ESG activity, which fits perfectly with the thirty or so strategic consulting solutions around Consulting for Good, which represents nearly 20% of our overall activity.

The integration is effective as of July 1, 2022.


Sia Partners is a new generation management consulting firm and pioneer of Consulting 4.0. We offer a unique blend of AI and design capabilities, augmenting traditional consulting to deliver superior value to our customers. With 2,400 consultants in 18 countries and expertise in more than 30 sectors and services, we optimize the projects of our clients worldwide. Through our Consulting for Good approach, we strive to achieve greater impact by developing innovative CSR solutions for our clients, making sustainability a profitable lever for transformation.

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