Loyal3(<a href="https://www.loyal3.com/" rel="nofollow">https://www.loyal3.com/</a>) periodically gets some shares allocated during an IPO, that the general public can buy via their platform. GoPro and Square are a couple of their notable offerings.<p>Another option is the pre-IPO market. EquityZen(<a href="https://equityzen.com/" rel="nofollow">https://equityzen.com/</a>) is one of the secondary market where you can buy shares pre-IPO from other shareholders. (Disclosure: I am an engineer at EquityZen)