Kate Ryan

Managing Director, US

Kate oversees Diffusion’s U.S. operations in both New York and Los Angeles and provides strategic counsel across the agency. With more than 15 years of experience, Kate has managed and executed award-winning PR and social media campaigns for a wide variety of B2B and B2C brands in the U.S. Her specialty lies in executing the creative campaigns that truly move the needle for her clients, leading her teams to win more than 50 industry awards for excellence in PR.

While at Diffusion, Kate’s campaigns for clients have included breaking the Guinness World Record for “Longest TV Binge Watch” with CyberLink; introducing the world to the first consumer iteration of IBM Watson in the category-creating CogniToy; making Burrow’s flagship sofa the ‘internet’s favorite sofa’; overseeing the U.S. PR rollout for Mobileye, the makers of software for self-driving cars as well as the corporate PR program for the USA TODAY NETWORK and consumer PR program for GoPro.

She has also driven programs that have helped clients be acquired by Red Hat, Synchrony Financial, Havenly Brands and Intel. Prior to her work at Diffusion, Kate oversaw the North American PR programs for a variety of corporate clients including cybersecurity provider Radware, serviced office provider Regus and mobile application developer Kony Solutions.

Kate has received several awards for her work in PR, including Bulldog Reporter’s “Stars of PR”, PRSA New York’s 15 Under 35, PRSA-NY’s President’s Award and PR News’ Top Women in PR. She has also served on the Board of Directors for PRSA-NY and was the Judging Chair of the PRSA-NY Big Apple Awards from 2020-2024.

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