MOSCOW — The Bolshoi Theater will not be extending the contract of Sergei Filin, the ballet’s artistic director who was injured in an acid attack organized by a dancer in January 2013.

According to a statement posted on the Bolshoi’s website on Thursday, the theater’s general director, Vladimir Urin, told Mr. Filin that his contract would not be extended once it expires in March. Until then, Mr. Filin will continue “to be responsible for new productions, questions regarding the operation of the theater’s ballet troupe and its tours.”

Mr. Filin lost of most of his sight in the acid attack, which made headlines all over the world, and caused turmoil at the Bolshoi. He later underwent treatment, mostly in Germany, to restore a measure of vision, and has continued to rehearse and oversee the company.

Pavel Dmitrichenko, a Bolshoi soloist, was sentenced in December 2013 to six years in prison for organizing the attack; that sentence was reduced to 5 ½ years in March 2014. Yuri Zarutsky, who threw the acid at Mr. Filin’s face, had his original 10-year sentence reduced to nine.