Molson Coors Brewing Co., the third- largest U.S. beer maker with brands including Blue Moon, and its Canadian subsidiary will split their respective shares 2-for-1.

The splits will both occur as 100 percent stock dividends payable to shareholders of record on Sept. 19, the Golden-based company said today in a statement.

Molson Coors Canada Inc., the subsidiary based in Montreal, characterized its 2-for-1 split as a subdivision.

In both cases, the new shares will be issued Oct. 3, the companies said.

Shares of Molson Coors fell 50 cents to $89.79 today in New York Stock Exchange composite trading. They have gained 17 percent this year.