Have you looked at their website for a bank merger notice? My bank has been bought out 3 times in my life, and they send me a notice in the mail letting me know if their terms of service have changed.

Just go to the companies official website and it should have an announcement if something like that happens to let customers know especially if the bank was having financial difficulties and was in danger of failing. They would want to reassure their customers like Washington Mutual did when they were bought out by JP Morgan. You can find their regular website easily by using their name in a web address. For example Wells Fargo you would go to www.wellsfargo.com or go to Google and search for the companies official website by entering "Official" and then the "(Bank Name)". If for some reason this information is not available on their regular website a good place to go is their Investor Relations section of their website. Find their official website and then somewhere on the homepage you should find a link that should say "Investor Relations". It is usually at the top or at the very bottom. If not then look for a link that says something like "About" or "About (Company Name)" or possibly "About Company". After finding and clicking that you should find a link for "Investor Relations" on the following page. This part of the site is great to find out how the company is doing and if anyone acquires them because that is a Big Deal to Shareholders because they usually have to approve the transaction. You can also choose to receive investor information updates even if you are not an investor. Then if they do get acquired or anything like that you will be one of the first to know.