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Restaurant Brands International (QSR - Get Report)  shares traded lower Friday after the Burger King and Popeye's Louisiana Kitchen owner said a key investor will sell 20 million shares at a discount to its current market price.

Restaurant Brands said an affiliate of Brazil-based 3G Capital Partners Ltd., which effectively took over the running of Burger King six years ago, will sell 20 million shares, through a forward agreement with Morgan Stanley, at between $73.50 and $75.50 per share. The 3G sale, which will be completed by August 29, will cut the group's stake by around 4% to 170 million shares.

Restaurant Brands's U.S.-listed shares were marked 3.84% lower Friday to change hands at $73.60 each, a move that trims the stock's year-to-date gain to around 40.24%. The shares closed at $76.57 last night in New York.
 
The sale disclosure comes just one week after Restaurant Brands said adjusted earnings for the three months ending in June came in at 71 cents per share, up 7.6% from the same period last year and 5 cents ahead of the Street consensus forecast.
 
Restaurant Brands said system wide sales for the group's Burger King franchise rose 9.8% from the same period last year, while while comparable sales rose 3.6%, firmly ahead of the Street consensus. Comparable sales from its two other brands -- Tim Horton's and Popeye's Louisiana Kitchen -- rose 0.5% and 3% respectively.
 
Overall group revenues, the company said, rose 4.24% to $1.4 billion, coming in just in front of analysts' estimates.
 
"We are excited by the tremendous opportunity for restaurant growth in front of us, most recently highlighted by new partnerships we announced for Popeyes in China and Spain, and Tim Hortons in Thailand," said CEO Jose Cil. "We are working closely with our restaurant owners to deliver an enhanced guest experience including technology like delivery, kiosks and outdoor digital menu boards."

"We also continue to attract leading talent in the industry to join our company and to contribute to our aspiration to build the most loved restaurant brands in the world," he added.