Be glad they don't answer ! , because that's a very good sign that the CEO's are busy with other things.
It would be a shame if the CEO and management responded to every little email from its hundreds of shareholders.
if a CEO is constantly replying to his shareholders' emails, for me it just means ..... that the CEO has soooooo "little" to do that he doesn't need to take care of his company's business, but can sleep in and reply to any pointless e-mails, because CEO / management has enough time and that would be bad if it were
imho