At least 50% of startup stock options are now worthless
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Transparency and revaluations don't put money in your pocket. This is just the risk we take working at startups with our income in illiquid assets. I wouldn't say they're worthless, because some are actually less than worthless and others are more tax friendly depending on how you think your company is going to weather the storm.
(1) https://corpgov.law.harvard.edu/2016/02/27/down-round-financ...
Startups are inherently risky and volatile. It is what makes them exciting and infuriating to be a part of.