Only one.
Who picks out the companies that the special pricing will be offered to? If the companies are mostly white, in middle/upper income areas, etc. there may be an issue. What about the smaller company with a lot of protected class employees that has a meager account with the bank? Why are they excluded?
Unless open to all companies, and/or heavily documented, there could be a potential issue with disparate impact (effects test).
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Integrity. With it, nothing else matters. Without it, nothing else matters.