Christina Rossi - May 19, 2025 Form 4 Insider Report for Blueprint Medicines Corp (BPMC)

Role
CHIEF OPERATING OFFICER
Signature
/s/ Melissa Masse, Attorney-in-Fact
Stock symbol
BPMC
Transactions as of
May 19, 2025
Transactions value $
-$228,557
Form type
4
Date filed
5/21/2025, 04:33 PM
Previous filing
May 7, 2025
Next filing
Jun 12, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Rossi Christina CHIEF OPERATING OFFICER C/O BLUEPRINT MEDICINES CORPORATION, 45 SIDNEY STREET, CAMBRIDGE /s/ Melissa Masse, Attorney-in-Fact 2025-05-21 0001756941

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BPMC Common Stock Sale -$80.5K -804 -1.2% $100.14 66.2K May 19, 2025 Direct F1, F2
transaction BPMC Common Stock Sale -$142K -1.41K -2.13% $100.67 64.8K May 19, 2025 Direct F1, F3
transaction BPMC Common Stock Sale -$5.8K -57 -0.09% $101.72 64.7K May 19, 2025 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Effected pursuant to a trading plan adopted on August 27, 2024 pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
F2 The price reported is an average sale price. The shares were sold in multiple transactions ranging from $99.42 to $100.42. 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 range set forth in this footnote.
F3 The price reported is an average sale price. The shares were sold in multiple transactions ranging from $100.42 to $101.29. 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 range set forth in this footnote.
F4 The price reported is an average sale price. The shares were sold in multiple transactions ranging from $101.58 to $101.90. 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 range set forth in this footnote.