Opinion: Testing-the-waters communications allow companies, founders and sponsors to confidentially assess investor interest in a potential IPO, writes McDermott's Craig Garvey.

Pre-IPO employees can use this checklist to organize equity, plan exercises and taxes, evaluate tender offers, diversify concentrated stock and prepare for an IPO.

SpaceX has already received orders for more than the shares available in its $75 billion initial public offering, according to people familiar with the matter, putting the company on the verge of setting the record for the

The SpaceX IPO is expected to liftoff next Friday and will be a big payoff for Elon Musk and many others. CNBC's Robert Frank joins 'Squawk Box' with the details. CNBC's Leslie Picker joins 'Squawk Box' with the latest news from SpaceX.