Armon Sharei - Jan 12, 2022 Form 4 Insider Report for SQZ Biotechnologies Co (SQZB)

Role: President and CEO, Director
Signature: /s/ Lawrence Knopf, Attorney-in-Fact for Armon Sharei
Stock symbol: SQZB
Transactions as of: Jan 12, 2022
Transactions value $: $0
Form type: 4
Date filed: 1/13/2022, 04:15 PM
Previous filing: Jan 4, 2022
Next filing: Feb 15, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SQZB	Common Stock	Options Exercise	$23.5K	+13K	+4.77%	$1.81^*	285K	Jan 12, 2022	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	-$23.5K	-13K	-7.03%	$1.81^*	172K	Jan 12, 2022	Common Stock	13K	$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.