Lucas, 68, registered 37.1 million shares of Burbank, California-based Disney, a 2.1 percent stake, according to a regulatory filing Wednesday. The filing doesn’t mean a sale is imminent. Disney completed the purchase of his Lucasfilm Ltd. on Dec. 21, according to a statement at the time.

The company bought Lucas’s “Star Wars” empire for stock and a cash payment of $2.21 billion to develop a new film series based on the well-known sci-fi adventure movies. Robert Iger, Disney’s chairman and chief executive officer, said yesterday the world’s largest entertainment company also planned two films based on characters from the series.

Disney rose 0.4 percent to $54.52 at the close in New York. The stock has gained 9.5 percent this year.