Beaten Down Regional Banks – How to analyze?

I've been watching a number of the regional bank stock prices dive the past week. I'm wondering if this is a good buying opportunity, especially if the Fed does guarantee deposits for all regional banks (I think for the next 2 years?).

I've been studying the balance sheets of banks over the past few weeks – SVB has provided some great learning material with everyone writing about the problems with the SVB balance sheet and duration exposure to interest rates.

But I'm wondering – what happens if the stock prices continue to plummet? Equity obv goes down as does the value of the company, but does that impair the current operations of the bank or ability to continue operating?

I'm guessing all the management that has stock options are probably pissed. But besides that – what else should an investor think about with severely falling stock prices?

Has anyone looked at Regions Financial Corp (RF) or East West Bank (EWB)?