Beam Therapeutics Inc. — Director's Dealing 2021

Jan 4, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Beam Therapeutics Inc. (BEAM)
CIK: 0001745999
Period of Report: 2020-12-30

Reporting Person: Ciaramella Giuseppe (President & CSO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-12-30	Common Stock	M	43842	$1.03	Acquired	47573	Direct
2020-12-30	Common Stock	S	2299	$79.03	Disposed	45274	Direct
2020-12-30	Common Stock	S	3510	$80.12	Disposed	41764	Direct
2020-12-30	Common Stock	S	8809	$80.97	Disposed	32955	Direct
2020-12-30	Common Stock	S	5297	$82.00	Disposed	27658	Direct
2020-12-30	Common Stock	S	2805	$83.12	Disposed	24853	Direct
2020-12-30	Common Stock	S	8248	$84.06	Disposed	16605	Direct
2020-12-30	Common Stock	S	3049	$85.16	Disposed	13556	Direct
2020-12-30	Common Stock	S	6756	$86.27	Disposed	6800	Direct
2020-12-30	Common Stock	S	769	$86.96	Disposed	6031	Direct
2020-12-30	Common Stock	S	1700	$88.22	Disposed	4331	Direct
2020-12-30	Common Stock	S	600	$89.66	Disposed	3731	Direct
2020-12-30	Common Stock	M	12000	$0.67	Acquired	15731	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-12-30	Stock Option (Right to Buy)	$1.03	M	43842	Disposed	2028-07-13	Common Stock (43842)	Direct
2020-12-30	Stock Option (Right to Buy)	$0.67	M	12000	Disposed	2028-05-08	Common Stock (12000)	Direct

Footnotes

F1: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan. Each price reported for transactions affected pursuant to the Rule 10b5-1 trading plan is a weighted average price. The Reporting Person undertakes to provide to BEAM, any security holder of BEAM or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F2: 25% of the shares subject to the stock option vested on the first anniversary of the 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 through such dates.

F3: These shares were sold in multiple transactions ranging from $78.49 to $79.48 inclusive.

F4: These shares were sold in multiple transactions ranging from $79.52 to $80.51 inclusive.

F5: These shares were sold in multiple transactions ranging from $80.52 to $81.51 inclusive.

F6: These shares were sold in multiple transactions ranging from $81.52 to $82.51 inclusive.

F7: These shares were sold in multiple transactions ranging from $82.52 to $83.51 inclusive.

F8: These shares were sold in multiple transactions ranging from $83.60 to $84.59 inclusive.

F9: These shares were sold in multiple transactions ranging from $84.69 to $85.68 inclusive.

F10: These shares were sold in multiple transactions ranging from $85.71 to $86.69 inclusive.

F11: These shares were sold in multiple transactions ranging from $86.72 to $87.51 inclusive.

F12: These shares were sold in multiple transactions ranging from $87.80 to $88.67 inclusive.

F13: These shares were sold in multiple transactions ranging from $89.66 to $89.67 inclusive.