Carl Decicco - Dec 9, 2021 Form 4 Insider Report for Foghorn Therapeutics Inc. (FHTX)

Role: Chief Scientific Officer
Signature: /s /Allan Reine, M.D., Attorney-in-Fact
Stock symbol: FHTX
Transactions as of: Dec 9, 2021
Transactions value $: $388,033
Form type: 4
Date filed: 12/13/2021, 07:37 PM

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FHTX	Common Stock	Options Exercise	$388K	+104K	+40.37%	$3.72	363K	Dec 9, 2021	Direct

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	FHTX	Stock Options (Right to buy)	Options Exercise	$0	-76.9K	-29.19%	$0.00	187K	Dec 9, 2021	Common Stock	76.9K	$3.72	Direct	F1
transaction	FHTX	Stock Options (Right to buy)	Options Exercise	$0	-27.4K	-44.44%	$0.00	34.3K	Dec 9, 2021	Common Stock	27.4K	$3.72	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The option vested as to 25% of the underlying shares of common stock on December 10, 2019, the first anniversary of the of the vesting commencement date, and at a rate of 6.25% of the underlying shares thereafter on the first day of each calendar quarter following such first anniversary until the option is fully vested.
F2	The option vested as to 25% of the underlying shares of common stock on January 30, 2020, the first anniversary of the of the vesting commencement date, and at a rate of 6.25% of the underlying shares thereafter on the first day of each calendar quarter following such first anniversary until the option is fully vested.