ACCELERON PHARMA INC

CUSIP: 00434H108 Class: COMMON STOCK

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q3 2021
Shares 894,898 Value ($000) $154,012 Avg Close — Range —
Q2 2021
Shares 855,644 Value ($000) $107,375 Avg Close — Range —
Q1 2021
Shares 839,273 Value ($000) $113,814 Avg Close — Range —
Q4 2020
Shares 865,507 Value ($000) $110,733 Avg Close — Range —
Q3 2020
Shares 847,149 Value ($000) $95,330 Avg Close — Range —
Q2 2020
Shares 664,994 Value ($000) $63,354 Avg Close — Range —
Q1 2020
Shares 645,364 Value ($000) $57,999 Avg Close — Range —
Q4 2019
Shares 1,150,819 Value ($000) $61,016 Avg Close — Range —
Q3 2019
Shares 1,237,031 Value ($000) $48,875 Avg Close — Range —
Q2 2019
Shares 1,220,161 Value ($000) $50,124 Avg Close — Range —
Q1 2019
Shares 1,377,123 Value ($000) $64,133 Avg Close — Range —
Q4 2018
Shares 1,292,713 Value ($000) $56,298 Avg Close — Range —
Q3 2018
Shares 1,184,308 Value ($000) $67,778 Avg Close — Range —
Q2 2018
Shares 795,043 Value ($000) $38,575 Avg Close — Range —
Q1 2018
Shares 1,374,198 Value ($000) $53,731 Avg Close — Range —
Q4 2017
Shares 1,510,868 Value ($000) $64,121 Avg Close — Range —
Q3 2017
Shares 1,541,638 Value ($000) $57,534 Avg Close — Range —
Q2 2017
Shares 1,682,359 Value ($000) $51,127 Avg Close — Range —
Q1 2017
Shares 1,147,919 Value ($000) $30,385 Avg Close — Range —
Q4 2016
Shares 1,252,409 Value ($000) $31,961 Avg Close — Range —
Q3 2016
Shares 479,885 Value ($000) $17,367 Avg Close — Range —
Q2 2016
Shares 494,200 Value ($000) $16,793 Avg Close — Range —