Repare Therapeutics Inc. — Director's Dealing 2021

Jun 8, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Repare Therapeutics Inc. (RPTX)
CIK: 0001808158
Period of Report: 2021-06-03

Reporting Person: Segal Lloyd Mitchell (President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-06-03	Common Stock	S	6648	$31.74	Disposed	126936	Indirect
2021-06-04	Common Stock	S	17180	$30.64	Disposed	109756	Indirect
2021-06-04	Common Stock	S	12172	$31.36	Disposed	97584	Indirect
2021-06-04	Common Stock	M	5000	$1.637	Acquired	10000	Direct
2021-06-04	Common Stock	S	5000	$31.25	Disposed	5000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-06-04	Employee Stock Option (right to buy)	$1.637	M	5000	Disposed	2027-06-22	Common Stock (5000)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.50 to
$32.15 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (3), (4) and (5).

F2: These securities are registered in the name of Arvala Inc. (f/k/a 3996953 Canada Inc., the "Company"). The Reporting Person is the sole stockholder of the Company.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.20 to $31.19 inclusive.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.215 to $31.65 inclusive.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.90 to $31.49 inclusive.

F6: Twenty-five percent (25%) of the shares subject to the option vested on June 22, 2018, and one thirty-sixth (1/36th) of the remaining shares subject to the option vested or shall vest each month thereafter, subject to Reporting Person continuing to provide service through each such date.