Napa, Calif.—Jon-Mark Chappellet is the new director of operations and Ted Henry is the new winemaker at Clos du Val winery. The recent hires follow several other changes set in motion by president and CEO Steve Tamburelli.

In addition to the new hires, Clos Du Val has renovated the winery and is now focused on making wine almost exclusively with grapes from estate vineyards. According to a statement by the winery, Clos Du Val has significantly reduced production—with its overall Cabernet Sauvignon production cut almost in half. Chappellet and Henry will join a team that includes Tamburelli, director of national sales Sean Gallagher and consulting winemaker Tony Biagi.

Jon-Mark Chappellet is the son of Donn and Molly Chappellet and spent two decades as the director of operations for Chappellet Winery where he worked with Tamburelli who was the general manager.

As only the fourth winemaker in the four-decade history of Clos Du Val, Henry will be responsible for guiding Clos Du Val’s transition to an estate-focused portfolio, while also continuing a vineyard-driven stylistic shift toward greater ripeness, more mid-palate depth and greater tannin integration. Henry has more than 15 years of experience making Bordeaux varietal wines, including the past seven years as the winemaker at Napa Valley’s Jarvis Estate.