Giuseppe Ciaramella - 20 Oct 2023 Form 4 Insider Report for Beam Therapeutics Inc. (BEAM)

Role: President and CSO
Signature: By: /s/ Christine Bellon, Attorney-in-fact
Issuer symbol: BEAM
Transactions as of: 20 Oct 2023
Net transactions value: +$60,903
Form type: 4
Filing time: 24 Oct 2023, 16:05:04 UTC
Previous filing: 25 Jul 2023
Next filing: 02 Feb 2024
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	$60,903	+90,900	+188%	$0.6700^*	139,150	20 Oct 2023	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	-90,900	-60%	$0.000000	60,005	20 Oct 2023	Common Stock	90,900	$0.6700	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The shares subject to this stock option vested 25% on the first anniversary of the vesting commencement date, February 26, 2018, and the remaining shares vested in 36 substantially equal monthly installments thereafter.