Company: RPTX
Filing Date: 2025-04-29
Form Type: DEFA14A
Source: 0001193125-25-103791
Chunk: 0

Company: Repare Therapeutics Inc.
Filing Date: 2025-04-29
Form: DEFA14A
Chunk 0
---
SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 
 14a-6(e)(2))                                                       |

| ☐ | Definitive Proxy Statement |

| ☒ | Definitive Additional Materials |

| ☐ | Soliciting Material Pursuant to § 240.14a-12 |

REPARE THERAPEUTICS INC. (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement if Other Than the Registrant) Payment of Filing Fee (Check all boxes that apply)

| ☒ | No fee required. |

| ☐ | Fee paid previously with preliminary materials. |

| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 
 14a-6(i)(1) and 0-11.                                                          |

P.O. BOX 8016, CARY, NC 27512-9903 Repare Therapeutics Inc. Annual Meeting of Shareholders Tuesday, June 17, 2025 10:00 AM, Eastern Time Annual Meeting will be held live via the Internet - please visit www.proxydocs.com/RPTX for more details. You must pre-registerto attend the meeting online and/or participate at www.proxydocs.com/RPTX. For a convenient way to view proxy materials, VOTE, and obtain directions to attend the meeting go to www.proxydocs.com/RPTX To vote your proxy while visiting this site, you will need the 12 digit control number in the box below. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy materials are also available at: www.sedarplus.ca. To appoint a third party proxyholder, a shareholder of record must return its proxy card by mail in accordance with the instructions provided in the proxy materials by no later than by 10:00 A.M., Eastern Time, on June 16, 2025. For information about this notice