Did this actual point ever occur? Is it detailed anywhere and is the report available? From the reports and postings, it doesn't really seem like by Friday anything too "formal" had occurred. If it did, wouldn't some/all of that be available to public shareholders?
My summary was inaccurate, I edited it based on your comment.
The NYT article says the following:
On Thursday morning, Elon Musk and Tesla’s board gathered for a meeting on the factory floor of the company’s manufacturing plant in Fremont, Calif., people with knowledge of the events said. They were joined by representatives from the investment bank Goldman Sachs and the private equity firm Silver Lake, which were advising on a deal.
After a Silver Lake representative made a presentation expressing confidence in their ability to manage the process of taking Tesla private — a transaction that could have required $24 billion or more — the Wall Street representatives left the room, and the floor was given to Mr. Musk.
So my reading: GS and SL looked at the funding and the process and estimated costs at around $24 billion - about 57 million shares from 170 million, or a 33% buyout at $420.
They thought it is possible to perform the going-private buyout - obviously to be based on months of due diligence, precise planning and a shareholder vote.
I.e. the ball was in the Tesla board's court: whether to start the process, or reject the offer outright.
This BTW seems to explain last week's price action: Wall Street firms probably didn't know about the decision for 3 days.
After market close on Friday the refined announcement of staying public was released.
Note that it was released after the After-Market NASDAQ trading session, to give a weekend for everyone to evaluate the news. That was a good call too IMO.
Edit:
From the reports and postings, it doesn't really seem like by Friday anything too "formal" had occurred. If it did, wouldn't some/all of that be available to public shareholders?
Details of confidential plans, negotiations and rejected offers generally don't have to be reported. Plans that don't get turned into reality don't directly affect shareholders. Tesla could have done this in full secrecy and we wouldn't have learned about it - the exceptional thing was Elon's transparency.
Had the Tesla board agreed to start anything they'd probably have filed an 8-K.
(Note that IMO they'll probably file an 8-K about dissolving the going-private committee, because they filed an 8-K when they formed it. They have 3 business days to file it - but I see no reason for them to delay that beyond Monday.)