Development Milestone Payments. Subject to the remainder of this [Section 9.4], Kite shall pay to Sangamo the milestone payments set forth in the table below within ​ days after the first achievement of the applicable milestone event with respect to each Licensed Product in the Field (whether by Kite, its Affiliates or Sublicensees):

Sales Milestone Payments. Subject to the remainder of this [Section 9.5], Kite shall pay to Sangamo the milestone payments set forth in the table below when the annual aggregate Net Sales of each Licensed Product first reach the values indicated below.

Kite will notify Sangamo within ​ days after achievement of each development milestone event. After receipt of notice of achievement of such development milestone event, Sangamo shall submit an invoice to Kite for the corresponding development milestone payment. Kite will pay to Sangamo the corresponding milestone payment set forth in the table above within ​ days of its receipt of such invoice.