I’m very sorry about your father. Such things have tremendous impact on your family, your father, and yourself. Make sure you prioritize space for yourself, your health and your feelings.

That being said what you’re looking for is likely a forward contract to an investment group. A forward contract gives you the money now, in exchange for a promise of transferring your shares/options when the company IPOs.

The best way to do this is to look at what investment groups have invested in your company. Contact them and ask if they’ll do a forward contract. When I did one, I did it through TigerGlobal. As soon as my company IPOed, I transferred the shares and was good to go.

You may lose some value this way; but if you need the money, you need the money.

Best of luck my friend, and I wish your father better health!