Explained: SpaceX shares rise even as company insiders get a chance to sell for the first time

SpaceX shares rose even as many SpaceX insiders were freed up to sell for the first time

lockup expiration

A period after a company goes public when insiders are barred from selling shares; when it ends, they can sell for the first time

initial public offering (IPO)

The first sale of a company's stock to the public

R&D

Research and development spending by a company