Alumni Founders is a hand-verified directory of the companies started by people who used to work at SpaceX — built to make that network legible to the founders inside it and to the investors, engineers, and operators trying to find them.
What a listing carries
Each of the 150 companies has its own page: the founders and how long each spent at SpaceX, the year it was founded, its headquarters, sector, funding stage, capital raised to date, and current headcount. Together the registry accounts for $16.9B raised and 9,004 people employed.
How a company qualifies
One rule: at least one full-time founder who spent a year or more at SpaceX. A year is long enough that the way SpaceX builds actually rubbed off, and short enough not to exclude the people who left early to start something. Founders who have since moved on stay on the record, marked as departed.
Who checked it
Every company, founder, tenure, and funding figure is entered and verified by a human. Nothing is scraped in unreviewed and nothing is generated by a model. When a number cannot be confirmed the field is left empty rather than estimated — a blank headcount means "not verified", never zero.
What it costs
Nothing, in either direction. There is no fee to be listed, no sponsored placement, and no ranking that money can move. The site is free to read and free to cite with attribution.
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