The Splinter Group

The Splinter Group is one of the more instructive names in American whiskey precisely because it never owned a still. Founded in 2013 in Napa, California, it bought mature and unaged whiskey from distilleries in Kentucky and Tennessee and then treated that liquid the way a Napa winemaker treats fruit: blend it, move it into emptied French oak wine barrels, and let a second wood do the talking. The result was a small run of American whiskies that arrived in wine country logic rather than Kentucky logic, years before wine-cask finishing became a common shelf term.

History & Heritage

The company was formed in 2013 by the Wilkinson family and winemaker Dave Phinney, the founder of Orin Swift Cellars, whose used barrels would become central to the house style. On August 3, 2016, Vintage Wine Estates acquired a majority interest in Splinter Group Spirits, and Phinney sold his stake to focus on Orin Swift Cellars and other projects. The 2016 transaction was a majority purchase rather than a full acquisition: a 2024 bankruptcy ownership statement records Vintage Wine Estates holding 75 percent and a Wilkinson family trust retaining 25 percent.

By 2018 the operation had moved beyond simple sourcing, commissioning custom distillations at Bardstown Bourbon Company on its Vendome column still, with those barrels aging in Bardstown rickhouses ahead of planned Napa finishing. That trajectory ended abruptly. Vintage Wine Estates and Splinter Group Napa itself filed for Chapter 11 on July 24, 2024, and the liquidation plan became effective February 28, 2025, canceling the applicable equity interests and moving remaining estate assets into a liquidation trust. As of July 2026, the brand sits in post-confirmation liquidation under the Meier's Wine Cellars Liquidation Trust, and no subsequent buyer of the Splinter Group brands appears in public records. Retail listings persist, but they reflect remaining inventory rather than proof of continuing production.

The Whiskey

Splinter Group did not distill. Sourced whiskey traveled from Kentucky and Tennessee to Bin to Bottle, the custom-production facility at 110 Camino Oruga in Napa, which historically served as the blending, finishing, and bottling site. There the spirit spent an additional year and a half to three years in experienced French oak wine barrels. Proofing water came from artisanal spring sources on Moon Mountain in Sonoma, and the whiskey was cold filtered at 29 degrees. Steve Matthiasson and Bob Cabral, both known first as winemakers, served as master blenders.

Slaughterhouse Whiskey, the flagship, was aged nine years in American oak before further maturation in Orin Swift Cellars' Papillon barrels, French oak that had held red wine. Its mash bill is 85 percent corn, 8 percent wheat, 6 percent rye, and 1 percent malted barley. Straight Edge Bourbon blended five-, seven-, and eight-year-old Kentucky and Tennessee bourbons and finished them four to five months in Orin Swift French oak previously used for Mercury Head Cabernet Sauvignon. Its grain bill is reported at roughly 70 percent corn, though sources disagree on the remainder, which is unsurprising for a blend drawn from several distilleries. Whip Saw Rye and Partner Sweet Vermouth rounded out the range.

Why It Matters

Slaughterhouse Whiskey took a Gold Medal and Best in Class at the 2015 Whiskies of the World competition and a Gold Medal at the 2019 San Francisco World Spirits Competition, according to secondary trade and retail sources, and carries an editorial score of 91 points from Distiller. Those results matter less as trophies than as evidence that a wine-country finishing program could stand against whiskey judged on whiskey terms.

For those who appreciate good whiskey, The Splinter Group is worth understanding twice over: as an early and serious argument for secondary maturation in wine casks, and as a reminder that a whiskey brand and a distillery are not the same thing. When the corporate parent failed, the brand had no stills of its own to keep turning.