Fini. Done. Tau Ceti. His responsibility.
His defense is that he didn't look because he ASSUMED that they wouldn't have sent him anything classified. In the time when you say you had a responsibility for secret documents would "I assumed" have been a defense?
the SEC comment assumed disclosure and action. Duh!
Where we seem to be talking past each other is on the SEC point. In SEC-speak, "disclosure" typically means making information publically available, whether by a filing or publication. From the SEC's perspective "disclosure" is a good thing, as it puts all investors (or at least all of those who look for the available information) on a level playing field. What gets you in trouble is (1) having material nonpublic information about a publically traded security and (2) acting on it, personally or in concert with others. The opposite of disclosure, really.