In an updated IPO prospectus, SpaceX said that up to 5% of stock being offered by the company in the offering will be available in a direct share program.

More than 60% of shares outstanding immediately prior to the offering remain subject to an extended lock-up period...

SpaceX plans to reserve up to 5% of its IPO shares for employees and friends and family of executives, as disclosed in an updated filing ahead of its public listing.