Under the deal, which was announced last August, Sanderson is being combined with Continental Grain subsidiary Wayne Farms. Sanderson will cease trading on Friday.

The Justice Department, which had been investigating the deal for antitrust concerns, did not immediately respond to a request for comment.

The deal had raised concerns on Capitol Hill, where lawmakers asked for the Justice Department to take a hard look at it because of fear of pushing up prices.

Chicken wings and breasts have climbed 38% and 24% since February year-over-year, respectively, according to research from Wells Fargo.

(Reporting by Diane Bartz; Editing by Marguerita Choy)