Karl Wittstrom is an entrepreneur, winegrower, rancher and longtime Paso Robles area resident who was raised amid his family’s ranching and farming business. Karl is a director of the California Mid State Fair in Paso Robles, and he is a member of the California Cattlemen’s Association, California Farm Bureau and Paso Robles Wine Country Alliance. He oversees his own family vineyard and co-owns San Juan Vineyard and Margarita Vineyard with his partners in Ancient Peaks Winery.

Doug Filipponi is a longtime local winegrower and Paso Robles native who was named “Wine Industry Person of The Year” by his wine industry peers at the 2006 California Mid State Fair in Paso Robles. He is also the president of Filipponi & Thompson Drilling, a past president of the Paso Robles Wine Country Alliance, and a past chairman of the Paso Robles Wine Festival. Doug is co-owner of Filipponi & Thompson Vineyard, and co-owns Margarita Vineyard and San Juan Vineyard with his partners in Ancient Peaks Winery. 

Rob Rossi is a local entrepreneur and businessman with varied interests throughout the Central Coast. Rob is a newcomer to the wine industry, having introduced Robert Mondavi to Santa Margarita Ranch in 1999. Rob’s interests emphasize historic renovations and reuse projects, which have included the Fremont Theater in San Luis Obispo and Granada Theater in Santa Barbara. He co-owns Margarita Vineyard and San Juan Vineyard with his partners in Ancient Peaks Winery.

Mike Sinor is recognized as one of the Central Coast’s highest-rated winemakers (96 points - Wine Spectator; 95 points – Connoisseur’s Guide; 92 points – Wine Advocate; 92 points – Wine Enthusiast). His winemaking career on the Central Coast spans more than 15 years. At Ancient Peaks Winery, Mike oversees all winemaking operations and directs the quality and style of the wines.

Amanda Wittstrom-Higgins is a fourth-generation Paso Robles native with deep family roots in local agriculture and ranching. Prior to joining Ancient Peaks Winery, she worked in the real estate banking industry. In her role as corporate sales and marketing manager, Amanda is the primary contact for distribution as well as direct sales, and is responsible for the winery’s marketing planning and development.

Jeff Filipponi was born and raised in San Luis Obispo County, where he has always been involved in his family’s winegrowing business. Jeff studied agricultural systems management with a minor in viticulture at California Polytechnic State University in San Luis Obispo, after which he worked as assistant manager at Filipponi & Thompson and San Juan Vineyards. He now oversees viticultural operations at Margarita Vineyard growing premium wine grapes for Ancient Peaks and other wineries.