For more than 75 years, the Trinchero family has made wine in Napa Valley. With each new vintage, each new acre of vineyard, and each new generation, our story has grown—yet our family’s vision remains the same: to produce exceptional Napa Valley wines. Over the past four decades, the family has established estate vineyards spanning the region from north to south and from valley floor to mountaintop, all sustainably farmed to express the character of each site while preserving the land for future generations. These vineyards form the foundation of Quattro Theory wines, complemented by a small number of longtime, family-owned grower partners.

Led by winemaker Emily Haines, who brings more than 17 years of experience and a background in scientific research, Quattro Theory highlights the natural aromatics and varietal character unique to each vineyard through a thoughtful balance of tradition and modern techniques. From tailored farming and hand harvesting to small‑lot winemaking, each step is designed to preserve what makes each site distinct. The result is balanced, expressive wines that are approachable upon release and capable of aging gracefully.