Company: RPTX
Filing Date: 2025-11-17
Form Type: DEFA14A
Source: 0001193125-25-284040
Chunk: 163

Company: Repare Therapeutics Inc.
Filing Date: 2025-11-17
Form: DEFA14A
Chunk 163
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, but not yet received by, Purchaser or any of its Affiliates or (ii) CVR Payment Amounts have been determined to be payable to Holders pursuant hereto which have not yet been
paid, in each of cases (i) and (ii), then this Agreement shall terminate in accordance with this Section 6.8(c) on the date that is the first anniversary of the Expiration Date (such additional period, the “Tail Period”). For
the avoidance of doubt and notwithstanding

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anything to the contrary, nothing herein shall terminate or otherwise negatively affect any of the rights or remedies of the Representative with respect to the Holders pursuant to this Agreement
or otherwise.

. This Agreement, the Arrangement Agreement (including the schedules, annexes and exhibits thereto
and the documents and instruments referred to therein) contain the entire understanding of the parties hereto and thereto with reference to the transactions and matters contemplated hereby and thereby and supersede all prior agreements, written or
oral, among the parties with respect hereto and thereto.

. In the event that the CVR Payment Date shall not be a
Business Day, then, notwithstanding any provision of this Agreement to the contrary, any payment required to be made in respect of the CVRs on such date need not be made on such date, but may be made on the next succeeding Business Day with the same
force and effect as if made on the CVR Payment Date.

[Remainder of Page Left Blank Intentionally]

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IN WITNESS WHEREOF, each of the parties has caused this Agreement to be executed on its behalf by its duly authorized officers as of the day and year first above written.

| XENOTHERAPEUTICS, INC. |
| By                     |
| Name                   |
| Title                  |

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IN WITNESS WHEREOF, each of the parties has caused this Agreement to be executed on its behalf by its duly authorized officers as of the day and year first above written.

| [RIGHTS AGENT] solely in its capacity as Rights Agent |
| By                                                    |
| Name                                                  |
| Title                                                 |

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IN WITNESS WHEREOF, each of the parties has caused this Agreement to be executed on its behalf by its duly authorized officers as of the day and year first above written.

| [REPRESENTATIVE], solely in its capacity as Representative |
| By                                                         |
| Name                                                       |
| Title                                                      |

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Exhibit