Director New Enterprise Associates 15, L.P. exercised 434,297 shares at a strike of $0.01, covered exercise/tax liability with 643 shares, returned 1,960,591 shares to the company, exercised 189,195 in-the-money shares at a strike of $0.01 and sold $1,890 worth of shares (280 units at $6.75) (SEC Form 4)