Kate Haviland - Jun 28, 2021 Form 4 Insider Report for Blueprint Medicines Corp (BPMC)

Role: Chief Operating Officer
Signature: /s/ Ariel Hurley, Attorney-in-Fact
Stock symbol: BPMC
Transactions as of: Jun 28, 2021
Transactions value $: -$54,188
Form type: 4
Date filed: 6/30/2021, 04:02 PM
Previous filing: Jun 11, 2021
Next filing: Sep 15, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BPMC	Common Stock	Options Exercise	$36.1K	+1K	+1.85%	$36.05	54.9K	Jun 28, 2021	Direct	F1
transaction	BPMC	Common Stock	Sale	-$32.2K	-354	-0.64%	$90.88	54.6K	Jun 28, 2021	Direct	F1, F2
transaction	BPMC	Common Stock	Sale	-$55.9K	-622	-1.14%	$89.91	54K	Jun 28, 2021	Direct	F1, F3
transaction	BPMC	Common Stock	Sale	-$2.14K	-24	-0.04%	$89.28	53.9K	Jun 28, 2021	Direct	F1, F4

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)	Options Exercise	$0	-1K	-27.85%	$0.00	2.59K	Jun 28, 2021	Common Stock	1K	$36.05	Direct	F1, F5

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

Explanation of Responses:

Id	Content
F1	Effected pursuant to a trading plan adopted on January 12, 2021 pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
F2	The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.42 to $91.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer 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 ranges set forth in footnotes (2) through (4) in this form 4.
F3	The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.41 to $90.40 per share.
F4	The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.07 to $89.40 per share.
F5	This option was granted on February 16, 2017. This option vested with respect to 1/48th of the shares underlying the option on March 16, 2017 and as to an additional 1/48th of the shares underlying the option each month thereafter.