Giuseppe Ciaramella - 29 Dec 2021 Form 4 Insider Report for Beam Therapeutics Inc. (BEAM)

Role: President & CSO
Signature: By: /s/ Christine Bellon, Attorney-in-fact
Issuer symbol: BEAM
Transactions as of: 29 Dec 2021
Net transactions value: +$26,599
Form type: 4
Filing time: 30 Dec 2021, 17:00:13 UTC
Previous filing: 23 Dec 2021
Next filing: 02 Feb 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BEAM	Common Stock	Options Exercise	$26,599	+39,700	+63%	$0.6700^*	102,473	29 Dec 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	BEAM	Stock Option (Right to Buy)	Options Exercise	$0	-39,700	-16%	$0.000000	207,702	29 Dec 2021	Common Stock	39,700	$0.6700	Direct	F1

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

Explanation of Responses:

Id	Content
F1	25% of the shares subject to the stock option shall vest on the first anniversary of the vesting commencement date, February 26, 2018, and the remaining shares shall vest in 36 substantially equal monthly installments thereafter, subject to continued service with Beam Therapeutics Inc. through such dates.