Armon Sharei - 22 Dec 2021 Form 4 Insider Report for SQZ Biotechnologies Co

Role: President and CEO, Director
Signature: /s/ Lawrence Knopf, Attorney-in-Fact for Armon Sharei
Issuer symbol: N/A
Transactions as of: 22 Dec 2021
Net transactions value: +$19,999
Form type: 4
Filing time: 22 Dec 2021, 16:15:10 UTC
Next filing: 04 Jan 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SQZB	Common Stock	Options Exercise	$19,999	+11,049	+4.3%	$1.81^*	270,762	22 Dec 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SQZB	Stock Option	Options Exercise	$0	-11,049	-5.6%	$0.000000	184,937	22 Dec 2021	Common Stock	11,049	$1.81	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Options were exercised and held for tax planning purposes.
F2	The option was originally granted for 286,514 shares. The option vested and became exercisable as to the original share amount as to 25% of the underlying securities on October 11, 2017 and in 36 equal monthly installments thereafter.