BLUEPRINT MEDICINES CORP

CUSIP: 09627Y109 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

Note: Option positions (PUT/CALL) are excluded.

Q2 2025
Shares 8,574 Value ($000) $1,099 Avg Close — Range —
Q1 2025
Shares 1,429,668 Value ($000) $126,540 Avg Close — Range —
Q4 2024
Shares 1,944,695 Value ($000) $169,616 Avg Close — Range —
Q3 2024
Shares 1,674,799 Value ($000) $154,919 Avg Close — Range —
Q2 2024
Shares 1,593,916 Value ($000) $171,792 Avg Close — Range —
Q1 2024
Shares 1,708,048 Value ($000) $162,025 Avg Close — Range —
Q4 2023
Shares 1,727,845 Value ($000) $159,376 Avg Close — Range —
Q3 2023
Shares 1,456,629 Value ($000) $73,152 Avg Close — Range —
Q2 2023
Shares 1,474,490 Value ($000) $93,188 Avg Close — Range —
Q1 2023
Shares 1,082,449 Value ($000) $48,699 Avg Close — Range —
Q4 2022
Shares 1,024,614 Value ($000) $44,888 Avg Close — Range —
Q3 2022
Shares 1,074,284 Value ($000) $70,785 Avg Close — Range —
Q2 2022
Shares 1,065,128 Value ($000) $53,800 Avg Close — Range —
Q1 2022
Shares 1,085,516 Value ($000) $69,343 Avg Close — Range —
Q4 2021
Shares 1,747,721 Value ($000) $187,198 Avg Close — Range —
Q3 2021
Shares 1,717,164 Value ($000) $176,542 Avg Close — Range —
Q2 2021
Shares 1,035,918 Value ($000) $91,119 Avg Close — Range —
Q1 2021
Shares 1,059,271 Value ($000) $102,993 Avg Close — Range —
Q4 2020
Shares 982,814 Value ($000) $110,223 Avg Close — Range —