Kosta Browne

Kosta Browne began in 1997 when Dan Kosta and Michael Browne, both servers at John Ash & Co. restaurant in Santa Rosa, saved roughly $1,400 in tips to purchase a half-ton of Pinot Noir grapes from Everett Ridge, a used barrel, and a second-hand de-stemmer. In 1999 the pair secured financing to produce 2,600 cases of Lake County Sauvignon Blanc, formally establishing the winery, and Chris Costello joined as a third partner in 2001 to help with business structure and financing. Early recognition came with highly extracted 2002 and 2003 vintages, and a 95-point score from Wine Spectator in 2003 turned the brand into a cult sensation almost overnight. The Sonoma-based investment firm Vincraft purchased a majority stake in 2009 for $40 million, allowing the winery to own its facility in Sebastopol. Boston private equity firm J.W. Childs Associates took over in 2015, installing Scott Becker as CEO. Duckhorn Wine Company acquired Kosta Browne in 2018, and The Duckhorn Portfolio was itself acquired by Butterfly Equity in December 2024 for approximately $1.95 billion.

• 1997 origin: tip money, half a ton of Everett Ridge Pinot Noir grapes, one barrel, and a borrowed de-stemmer; officially launched with 2,600-case Sauvignon Blanc in 1999
• Vincraft (2009, $40M), J.W. Childs (2015), Duckhorn Wine Company (2018), and Butterfly Equity via Duckhorn Portfolio (December 2024) represent the four ownership phases
• All three founders stepped away in 2017; the Duckhorn acquisition excluded CIRQ, the separate Pinot project founded and owned by Michael Browne
• In 2012 Kosta Browne built a state-of-the-art winery in Sebastopol, cementing its move from rented facility to owned infrastructure

Kosta Browne's ascent from a garage operation to global benchmark status accelerated with the 2003 vintage, when Wine Spectator awarded the winery multiple 90-plus-point scores and word spread rapidly among California Pinot enthusiasts. The defining moment came when the 2009 Sonoma Coast Pinot Noir was named Wine Spectator's Wine of the Year for 2011, chosen from more than 16,000 wines reviewed in blind tasting that year, scoring 95 points. Wine Spectator cited its classic score, reasonable price, and the winery's role in the rapid rise of Pinot Noir in California. The winery has appeared on Wine Spectator's annual Top 100 list seven times since 2005. Kosta Browne demonstrated that a négociant-style California producer, without extensive estate vineyards, could achieve critical acclaim equal to Burgundy's top domaines, and its allocation-list model became a template for premium direct-to-consumer wine sales across North America.

• 2009 Sonoma Coast Pinot Noir: Wine Spectator 2011 Wine of the Year (95 pts), first California Pinot Noir ever to receive that honor
• Seven appearances on Wine Spectator's Top 100 since 2005 confirm consistent critical standing across multiple winemakers and ownership changes
• The 2003 vintage, with multiple 90-plus scores from Wine Spectator, established the cult following that built the mailing list to 30,000 members
• Julien Howsepian was named one of Beverage Information Group's '40 Under 40' best young leaders in 2025, continuing the brand's critical momentum

Kosta Browne was known for a highly extracted, ripe-fruit style beginning with the 2002 and 2003 vintages, but since 2015 the winery has moved deliberately toward less extraction, greater freshness, and more restrained oak. Julien Howsepian, who joined in 2012 and was appointed the winery's third-ever head winemaker in 2019 at age 34, has extended this evolution. His tenure has included elevating the Chardonnay program to world-class recognition, launching a sparkling program, and expanding into Oregon's Willamette Valley and Burgundy. The 4-Barrel Pinot Noir, the most limited wine in the portfolio at fewer than 100 cases per year, is fermented in a mix of concrete and oak with carefully managed whole-cluster inclusion, representing the purest expression of the house style. Across the portfolio, selective use of new oak and attention to native yeast fermentation preserve varietal character and site-specific aromatic detail.

• Style shifted post-2015 from high-extraction and full-ripeness toward greater freshness, lower new-oak percentages, and improved acidity preservation
• Julien Howsepian, appointed 2019 at age 34, is only the third head winemaker in the winery's history; he expanded the portfolio to Burgundy and Willamette Valley
• 4-Barrel Pinot Noir: fewer than 100 cases annually, blended from the four most compelling barrels of each vintage regardless of vineyard or appellation, with over a decade wait for guaranteed allocation
• Burgundy Series (launched with 2020 vintage) uses 25% new French oak for Pinot Noir; California single-vineyard wines use selectively higher new-oak levels tailored to each site

The winery relied solely on purchased fruit until 2013, when it acquired its first vineyard, a 20-acre site, followed by the purchase of Cerise Vineyard, a 60-acre property in Anderson Valley, in 2016. At the time of the 2018 Duckhorn acquisition, Kosta Browne controlled 170 acres via ownership or long-term leases, including Cerise Vineyard in Anderson Valley, prized sections of Keefer Ranch Vineyard in the Russian River Valley, and Gap's Crown Vineyard on the Sonoma Coast. Cerise Vineyard sits at elevations reaching 1,600 feet above sea level on Bearwallow complex soil in steep hillside terrain, producing vibrant, structured Chardonnay and Pinot Noir. Three Russian River Valley estate vineyards, El Diablo, Giusti Ranch, and Keefer Ranch, benefit from Pacific marine cooling. Gap's Crown, on the Petaluma Wind Gap, has supplied grapes since 2006 and contributed fruit to the Wine of the Year 2009 Sonoma Coast blend. Sourcing also extends south to Santa Lucia Highlands and Sta. Rita Hills.

• 170 acres controlled via ownership or long-term lease at acquisition: Cerise Vineyard (Anderson Valley), Keefer Ranch (Russian River Valley), Gap's Crown section (Sonoma Coast)
• Cerise Vineyard reaches 1,600 feet elevation on Bearwallow complex soil; Gap's Crown partnership dates to 2006 in the Petaluma Wind Gap
• Russian River Valley estates (El Diablo, Giusti Ranch, Keefer Ranch) are cooled nightly by Pacific Ocean marine influence protecting vines from daytime heat
• Grower partnerships span Anderson Valley to Sta. Rita Hills, including Kanzler, Rosella's, Garys', and Pisoni in the Santa Lucia Highlands

Under winemaker Julien Howsepian's leadership, Kosta Browne has expanded well beyond its Sonoma County roots. The Burgundy Series launched with the 2020 vintage, releasing five bottlings to members: Pinot Noirs from Volnay, Pommard, Gevrey-Chambertin, and a Beaune Premier Cru (blended from Les Bressandes and Les Teurons, aged in 25% new French oak), plus a Chardonnay from Meursault. The series has since grown to include Nuits-Saint-Georges and Chablis Premier Cru. Howsepian had been traveling to Burgundy since 2015 to select barrels from a cooperage near Beaune, building relationships that made the sourcing possible. The winery also produces wines from Oregon's Willamette Valley and has added a sparkling program. Today the portfolio is organized into five series: Burgundy, Appellation, Estate, Single Vineyard, and Observation.

• Burgundy Series launched with 2020 vintage: five bottlings including Beaune Premier Cru (Les Bressandes and Les Teurons), Volnay, Pommard, Gevrey-Chambertin, and Meursault Chardonnay
• Howsepian began sourcing Burgundy cooperage barrels in 2015, building the grower relationships needed for the full Burgundy Series five years later
• Five production series: Burgundy (France), Appellation (California multi-vineyard blends), Estate, Single Vineyard, and Observation
• Geographic scope now spans Anderson Valley, Russian River Valley, Sonoma Coast, Santa Lucia Highlands, Sta. Rita Hills, Willamette Valley (Oregon), and Burgundy (France)

Kosta Browne's mailing list has approximately 30,000 members who account for roughly 85% of the annual 30,000-case production, creating an allocation model that has come to define the brand's exclusivity. The winery operates its tasting room in Sebastopol, offering appointment-only experiences for members and their guests. With each ownership transition, successive investors have sought to carefully broaden market access through select restaurant and retail placements without dismantling the allocation-list model. The winery's location at its custom-built Sebastopol facility, constructed in 2012, provides the infrastructure for the full portfolio from California appellations through to Burgundy. Duckhorn, and now Butterfly Equity through the Duckhorn Portfolio, have maintained the operational independence and culture that define Kosta Browne's market position.

• 30,000 mailing list members consume approximately 85% of annual 30,000-case production; new members face a multi-year wait to join
• Custom winery built in Sebastopol in 2012; tasting experiences are by appointment for members and guests only
• Duckhorn acquisition in 2018 united two Wine Spectator Wine of the Year winners; Butterfly Equity acquired the full Duckhorn Portfolio for $1.95 billion in December 2024
• Successive private-equity owners have preserved the allocation-list model while selectively expanding restaurant and retail presence in key markets