| (a) | Company hereby acknowledges that, unless otherwise agreed in writing by Jounce, for a period of 14 days from the Effective Date (the “Standstill Period”), the Company will not, and will cause its affiliates to not, (i) acquire or propose or seek to acquire beneficial ownership or economic ownership or rights that do not confer beneficial ownership (“Jounce Share Ownership”) of any securities (including, for the avoidance of doubt, any option, warrant, convertible security, stock appreciation right or similar right with an exercise or conversion privilege or a settlement payment or mechanism at a price related to any security of Jounce or with a value derived in whole or in part from the value of any security of Jounce, whether or not such instrument or right shall be subject to settlement in the underlying class or series of stock of Jounce or otherwise (each, a “Derivative Instrument”)) (ii) form, join or in any way participate in a “group” (as such term is used in the rules of the United States Securities and Exchange Commission) (or discuss with any third party the potential formation of a group) with respect to any securities (including in derivative form) of Jounce; or (iii) cause any other person or entity to take any action described in clauses (i) and (ii) above (the restrictions set forth in foregoing clauses (i) through (iii), the “Standstill Restrictions”); provided, however, that the restrictions set forth in this Section shall terminate immediately upon the public announcement by Jounce that it has, since the Effective Date, (A) entered into a definitive agreement with a third party for a transaction involving the acquisition (by way of merger, tender offer or otherwise) of more than 50% of the outstanding capital stock of Jounce or 50% or more of the assets (on a consolidated basis) of Jounce or (B) materially amended the terms of its recommended business combination with Redx Pharma plc. |