Burbank entertainment giant Walt Disney Co. announced Tuesday it has purchased distribution rights to four films from competitor studio Paramount Pictures.

The movies are Marvel titles, “Iron Man,” “Iron Man 2,” “Thor” and “Captain America.”

Disney acquired Marvel Entertainment in 2009 for $4.2 billion and the next year paid Paramount for marketing and distribution rights for “Avengers” and “Iron Man 3.”

The announcement Tuesday shows Disney’s strategy to further exploit Marvel franchises after their theatrical release.

Disney shares were down 1.1 percent to $63.26 in Tuesday trading on the New York Stock Exchange.