Nothing more than the expected question and the expected answer, routine, and POET could be absolutely truthful in every respect, as opposed to only technically correct. I still suspect a third party leak, leading to early morning, out of the ordinary, buying. I could easily see an entity picking up 800,000 to a million shares or so, based on hearing something that, frankly, might not even be as good as some of the stuff we've been hearing for five years!
Whatever that something that was heard was, it may well have not been anything definitive at all, it may have been, "do you know what this company POET is up to, and how close they are to achieving it? My boss has been dealing with them, and they appear on the level." Why not take a flyer? Hell, we all did, and at much higher prices, and we no doubt staked a lot more of our net worth on it than whatever entity was today's buyer! We're not that dumb as a group, are we? Under that scenario, POET could even know what was leaked and answer the regulator's inquiry honestly just as they did.