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Institutional ownership intelligence
Schedule 13G/A

2655787D Schedule 13G/A filing by T. Rowe Price Associates

T. Rowe Price Associates reported beneficial ownership of 1.5M shares, representing 12% of BLUEPRINT MEDICINES CORP in this filing.

FiledAug 14, 2025
Ownership dateJun 30, 2025
Reported shares1.5M
Reported ownership12%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 1.4M
Shared voting power 1.5M
Sole dispositive power 1.5M
Shared dispositive power 1.5M
Compared with the prior filing

How the reported position changed

This compares the current filing with the previous tracked Schedule 13 filing from the same reporting CIK for 2655787D. A change between filings does not by itself establish when shares were bought or sold.

Previous filingNov 14, 2024
Reported share change-3,922,231
Ownership percentage change+3.5 pts
Previous filingThis filing
Reported shares5.4M1.5M
Reported ownership8.5%12%
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
T. Rowe Price Associates
CIK
CIK0000080255
Accession
0000080255-25-000589
Form
Schedule 13G/A
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.