They’ve had multiple secondary sales opportunities in the past few years, always at a higher valuation. By this point, if someone who’s been there >2 years hasn’t taken money off the table it’s most likely their decision.
I don’t work there but know several early folks and I’m absolutely thrilled for them.
private secondary markets are pretty liquid for momentum tech companies, there is an entire cottage industry of people making trusts to circumvent any transfer restrictions
employees are very liquid if they want to be, or wait a year for the next 10x in valuation