Avectra has appointed Richard Davis as CEO of the company. You can read all the details here: http://www.avectra.com/Pages/AvectraAppointsNewCEO.aspx
Changes at the CEO level of AMS companies are exceedingly rare, in part because most AMS companies are privately held and the CEO tends to be the founder. Avectra is one of a handful (two? three?) of AMS companies that is funded with venture capital (see here).
Full disclosure: EDM is an independent third-party consulting firm. This means we have no financial relationship with any of the vendors mentioned in this blog. We provide unbiased opinions on what we see.