Development Milestone Payments. Licensee shall pay to Axsome the following development milestone payment (the “Development Milestone Payment”) upon the achievement of the following milestone for the Licensed Product (the “Development Milestone”), whether achieved by Licensee or an Affiliate or Sublicensee. Licensee shall promptly (but in no event later than seven (7) Business Days after) notify Axsome in writing of the achievement of the Development Milestone and Licensee shall pay Axsome in full the Development Milestone EAST\200870719.16

provided any Development Milestone or Commercial Milestone, as applicable, has been achieved on or before the date of expiration or the effective date of termination, any unpaid Development Milestone Payment or Commercial Milestone Payment shall remain due and payable and shall be paid within ten (10) Business Days of such date of expiration or termination.

“OTOF Early Clinical Development Milestone Payment”

On a Product-by-Product basis, SGI will make one-time only milestone payments to Unum based on the first achievement of the development and regulatory milestone events as set forth in this [Section 11.7] for each Product.

Payment of the Development Milestone Amount is due ​ after ​. The Development Milestone Amount shall only be payable once no matter how many times the Development Milestone Event occurs and no more than ​ shall be payable under [[Sections 4.2 and 4.4]4]]4].

“Development Milestone Payment” has the meaning set forth in [Section 4.2].

the first Development Milestone Fee is USD$[…​…] (“First Development Milestone Fee”);

The Development Milestone Fees are payable as follows:

the Second Development Milestone Fee is payable within […​…];

ACADIA will have the right to credit against any Development Milestone Fee owed to Neuren, other than the First Development Milestone Fee, an amount equal to twice the amount ACADIA paid to fund Neuren’s share of the excess costs.