Avista

Avista. Means, collectively, Avista Capital Partners II, L.P., a Delaware limited partnership, Avista Capital Partners (Offshore) II L.P., a Bermuda exempted limited partnership, Avista Capital Partners (Offshore) II-A, L.P., a Bermuda exempted limited partnership, and ACP INC Research Co-Invest LLC, a Delaware limited liability company, and their respective Affiliates.