Ask HN: Private Market Secondaries

Hi guys, I'm in the fortunate position of being a first 5 employee at a $1B+ valued startup. I'm allowed to sell as long as the investor doesn't raise some red flags during vetting.

Since companies are staying private way longer and all my eggs are in this basket, I'd like to diversify a bit.

I keep getting emails from bottom feeder broker dealers who want to charge me >5% to spam their email list.

Surely there's a more efficient market or a better way to do this.

Does anyone have any advice?