Big/Rich, a good sign depends on how you look at it.
A) It is CERTAINLY not related to an ANTICIPATED event. this is a legal guy and he know that buying PPHMP in the event of an upcoming change of control (which would bring him 22500$ at least and he did pay less the 11K$) would be trading on internal knowledge.
B) PPHMP is a good deal at these prices (about 21+% interest yearly) if you are SURE PPHM is not going to fail (that is be able to pay interest and capital due to for instance a BK). With Avid income growing, cost going down due to stopped trials and AstraZeneca carrying 50% cost (free Durvalumab) of new trials, no creditors and cash on the bank his risk is very LOW. Plus he sees what is coming in on new deals etc. So if he does not NEED the money then he probably can not get 21+% anywhere else in a no-risk investment. On PPHM common he has the PPS risk, on PPHMP he does not if he is not forced to sell for private reasons. He'll keep getting 2K+ yearly into eternity :) or change of control.
So, personally, I would not look for SIGNS in this. MZ can just do this investment in a SAFER way then we because again he sees the cards INSIDE the company and must have assessed the PPHMP investment safe or he wouldn't have done it.
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