"Have there been other presentations to the AHA, or just these two?"

Yes, they have presented several times at AHA. I'm not sure if it has been every year, but on their publications page you can see they presented in 2015 and 2016 as well. I'd have to look back at past AHA programs/Resverlogix news releases beyond that, and I'm not up for that right now. You can google it up if you feel the need. This is a huge meeting for all things cardiovascular/heart disease/atherosclerosis releated. If they haven't presented every year, they have probably attended most every year. 

"In looking at the chart it looks like those AHA presentations coincided with a much higher PPS for RVX, although obviously the share structure was much different back then.  Does anyone recall what the market capitalization was around those times?"

I'll leave that for others to chime in on. Though if you go down that rabbit hole, then you're getting back into the CETP inhibitor comparisons and the times of this being understood only as a drug to raise HDL. So I'm not sure if you really want to go there.

BearDownAZ