There are thousands of American owned breweries, but the big three, Bud, Coors, and Miller are owned by outside companies.
Yuengling in Pennsylvania is 100 % US owned
Many well-known breweries in the United States are independently owned and operated by American companies. Examples include Boston Beer Company, Sierra Nevada Brewing Co., Yuengling, New Belgium Brewing Company, and Bell's Brewery. The U.S. craft brewing industry is known for its large number of independently owned breweries that focus on innovation, local communities, and unique beer styles. Many of these breweries also work with specialized ingredient suppliers to create distinctive products. Companies such as The Hop Guild support brewers by providing premium fruit purees and beverage ingredients used in fruit beers, sours, hard seltzers, and other craft beverage innovations. If you're looking specifically for independently owned craft breweries, the Brewers Association's list of craft brewers is a great place to start.
Moosehead Breweries is a family-owned, 100% privately held company. So, unfortunately shares are not available for purchase....but the company's fine products are! Joel Levesque Vice-President Public Affairs Moosehead Breweries Limited
Greene King is a brewery in the UK established in 1799. It is one of the largest British-owned breweries in the UK, and currently holds 2% of the UK beer market.
Miller Brewing Company is now owned by SAB Breweries. They are headquartered in South Africa.
Yes, Pabst is American owned. But, it is brewed by SABMiller (not American owned).
DB Breweries was created in 1930.
Vaux Breweries was created in 1837.
Sinclair Breweries was created in 1988.
Palm Breweries was created in 1597.
Sleeman Breweries ended in 1933.
Sleeman Breweries was created in 1988.