- Set aside a large amount for taxes, invested it in US Treasury Bond (get an estimate of your taxes from an accountant)
- Got an accountant
- Read up on QSBS (this can save you a lot of money if you got stock when the company was small enough)
- Got a last will and testament drafted and signed. Also asked our probate lawyer about stupid things people do with money, so as to avoid those mistakes.
- Got a financial planner. Also asked about stupid things people do. (At your scale, probably ok to just do standard ETFs and bonds. Note that don't buy in all at once, diversify not just the investments but also by time, so you're not buying all into the stock market at once. This also gives you time to think and reflect about how you want to use your money and what legacy you want, while also getting some returns on investments)
- Set up a donor advised fund (you can donate stock directly to one and get a big tax break)
- Made a donation and got something cool named after two of my long time mentors
- Read book Silver Spoon Kids on how to talk to one's children about money (our financial advisor gave this to us)
- Read a lot about wealth and power in the United States, in particular sociologist and psychologist William Domhoff's "Who Rules America?" https://whorulesamerica.ucsc.edu/power/wealth.html (I stumbled on this by accident, but found it a fascinating read)
Time is on your side here, so don't rush into anything. I was really lucky to have a brother who already had high net worth, so he was able to give a lot of guidance and discussion of tradeoffs.