Ford Motor is selling 8 million Rivian Automotive share with the insider lockup for the formerly high-flying electric vehicle maker scheduled to expire on Sunday.

The automaker now owns 102 million shares in Rivian. Ford will sell the stock through Goldman Sachs, according to sources.

After a company goes public, early investors and corporate officials are unable to sell their shares during the lockup period. This ensures that the IPO runs well and that the market does not get overcrowded.