whether you can sell on secondary markets is restricted by the company. pretty sure Stripe has not let most employees sell on secondary markets. personally have not seen them solicited on Forge or EquityZen myself.
A fun question to ask when interviewing at a startup is to what extent they block or facilitate employee share sales/transfers. Also check with private markets to see what their experience with that company is.
How do they prevent you from selling on the secondary market? Would love to see that clause on their options agreement. Most companies have first right of refusal which gives them the option to buy them first.
There are a few clauses but the gist is pretty simple: approval of any transfer of option or underlying share must be approved by the board of directors + they may also exercise their right of first refusal.
