Percy H. Carter - 01 Jun 2021 Form 4 Insider Report for Blueprint Medicines Corp (BPMC)

Role: Chief Scientific Officer
Signature: /s/ Ariel Hurley, Attorney-in-Fact
Issuer symbol: BPMC
Transactions as of: 01 Jun 2021
Net transactions value: $0
Form type: 4
Filing time: 03 Jun 2021, 16:18:05 UTC
Previous filing: 21 May 2021
Next filing: 03 Mar 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BPMC	Common Stock	Award	$0	+21,843		$0.000000	21,843	01 Jun 2021	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	BPMC	Stock Option (Right to Buy)	Award	$0	+39,200		$0.000000	39,200	01 Jun 2021	Common Stock	39,200	$89.16	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The reported transaction involved the Reporting Person's receipt of a grant of 21,843 restricted stock units under the Issuer's 2020 Inducement Plan.
F2	This option vests with respect to 25% of the shares underlying the option on June 1, 2022 and as to an additional 1/48th of the shares underlying the option each month thereafter.