PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q3 2019
Shares 4,858,931 Value ($000) $4,105 Avg Close — Range —
Q2 2019
Shares 5,077,633 Value ($000) $4,954 Avg Close — Range —
Q1 2019
Shares 5,053,166 Value ($000) $6,368 Avg Close — Range —
Q4 2018
Shares 6,231,005 Value ($000) $20,189 Avg Close — Range —
Q3 2018
Shares 4,903,729 Value ($000) $11,818 Avg Close — Range —
Q2 2018
Shares 5,043,780 Value ($000) $14,072 Avg Close — Range —
Q1 2018
Shares 4,827,560 Value ($000) $22,931 Avg Close — Range —