It's not quite the same thing. Disclosing that the fine is from the NSA is not incriminating. It ITSELF is the crime. In your example, revealing your source of income is not a crime. Rather it would reveal a previously committed crime. So I'm not sure that failing to reveal financial information in line with public company laws falls under the heading of not incriminating yourself, because your having paid government fines is not a crime, so you can't incriminate yourself in that way.
You could just as much argue the opposite way. Revealing financial information about public companies is required under the law. Free speech is allowed under the constitution. Therefore, the NSA can get fucked with their secrecy orders. You're still left with one legal principle against another.