Meet the PG Team

Kristi Arndt, owner

Kristi has 35+ years of communications expertise working for some of the most respected companies in the United States. Since beginning her career as a television reporter and bureau chief at a major network affiliate, Kristi’s professional experience has included non-profits, entrepreneurial organizations and educational settings, as well as the public and private sector. She understands the intricacies between the various entities and applies that knowledge to the specific needs of her clients. Her passions and areas of expertise include travel, hospitality, luxury products, sustainability and environmental practices, and services with a high-touch factor.


Dennis Stauffer

Dennis has a multifaceted media background that includes two decades as a television news reporter and anchor, and more than three years leading communications for the Minnesota Department of Natural Resources—the state’s wildlife agency. He literally wrote the book on media relations and crisis management when he authored MediaSmart, a text that has been used to teach journalism and public relations in a number of U.S. universities. Peridot Group clients have benefited from Dennis’ extensive experience, which includes crisis response planning and execution, as well as being a skilled presenter and speech writer. Dennis is also an expert in innovation strategies, an area where he has done groundbreaking research.


Mark Sejvar

Mark brings a high-energy drive to Peridot Group that has inspired coverage and success in travel, tourism, beauty, health and luxury goods. His areas of expertise include media relations, marketing, copy writing and editing services. He assembled and led the first-ever marketing communications team for Northern California’s Mendocino County. He directed public relations for Aveda Corporation, Vidal Sassoon and currently works with many leading brands leveraging his network of thousands of journalists. Mark started his career as a television news reporter. Having lived for years in Los Angeles and San Francisco, Mark is well-connected with celebrities, and in television and film industries.

contact information

Phone Number: 763.782.0265
P.O. Box 21331
Minneapolis, MN 55421


Our team has decades of experience and success working with organizations from world-class brands to startups


As former journalists, we can help you communicate more effectively with your audiences, including the media


We have conquered a wide range of communications challenges on behalf of our clients