Exhibit 1

JOINT FILING AGREEMENT

This joint filing agreement (this “Agreement”) is made and entered into as of November 13, 2020, by and among Temasek Holdings (Private) Limited, Fullerton Management Pte. Ltd., Temasek Life Sciences Private Limited, Elbrus Investments Pte. Ltd., and V-Sciences Investments Pte Ltd.

The parties to this Agreement agree to prepare jointly and file timely (and otherwise to deliver as appropriate) such statement on Schedule 13G with respect to the securities beneficially owned by each of them of SQZ Biotechnologies Company, and any and all amendments thereto, and any other document relating thereto required to be filed by them pursuant to the Securities Exchange Act of 1934, as amended.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.

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IN WITNESS WHEREOF, the undersigned have executed this Joint Filing Agreement as of November 13, 2020.

Temasek Holdings (Private) Limited
By:	/s/ Gregory Tan
	Name: Gregory Tan
	Title: Authorised Signatory
Fullerton Management Pte. Ltd.
By:	/s/ Gregory Tan
	Name: Gregory Tan
	Title: Director
Temasek Life Sciences Private Limited
By:	/s/ Lim Siew Lee Sherlyn
	Name: Lim Siew Lee Sherlyn
	Title: Director
Elbrus Investments Pte. Ltd.
By:	/s/ Lim Siew Lee Sherlyn
	Name: Lim Siew Lee Sherlyn
	Title: Director
V-Sciences Investments Pte Ltd
By:	/s/ Zahedah Abdul Rashid
	Name: Zahedah Abdul Rashid
	Title: Director