Earlier quoted context omitted.
Sam Altman has commented on this before. Among other things, he advocates for much longer (10 years) exercise periods for equity grants.[0] He also discusses the need for a change in tax treatment by the IRS. One of the fundamental issues is how options are taxed. Should you exercise an option, you will need to pay taxes on the spread (delta of strike price and current FMV, i.e. latest 409A valuation). In many cases,…
If the spread is nonexistent, why exercise at all? Why not just dump your money in an index fund?
The key is that you pay taxes on that spread. If you're early enough - I was roughly #25 - and do it early in your tenure, then you only have to come up with the cash to buy the shares and a minor tax bill. If I had waited until I left to execute, the spread would have been 12-15x. I know a few people who stayed 4 years to fully vest and then executed. I don't know detailed numbers but it sounded painful.
If/when Twilio eventually IPOs, then the ROI will be far better than any index fund.
(I don't know anything about the "if/when" as I haven't been inside in over 2 years.)