David Sinegal

David Sinegal, Sr. is an American businessman and the owner of the Sinegal Estate Winery in St. Helena, California. David Sinegal is the son of James Sinegal, the founder and former CEO & President of Costco Wholesale.

Sinegal purchased his current winery in St. Helena in May 2013 for $20 million.

Sinegal, a Democrat, has been a donor to multiple Democratic politicians including Barack Obama, Hillary Clinton, and Patty Murray.