PROTEOSTASIS THERAPEUTICS IN

CUSIP: 74373B109 Class: COM

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q3 2020
Shares 1,781,400 Value ($000) $1,959 Avg Close — Range —
Q2 2020
Shares 1,827,842 Value ($000) $2,504 Avg Close — Range —
Q1 2020
Shares 1,827,842 Value ($000) $2,084 Avg Close — Range —
Q4 2019
Shares 1,827,842 Value ($000) $4,167 Avg Close — Range —
Q3 2019
Shares 1,159,336 Value ($000) $979 Avg Close — Range —
Q2 2019
Shares 1,055,265 Value ($000) $1,030 Avg Close — Range —
Q1 2019
Shares 1,954,264 Value ($000) $2,462 Avg Close — Range —
Q4 2018
Shares 1,763,798 Value ($000) $5,714 Avg Close — Range —
Q3 2018
Shares 1,071,960 Value ($000) $2,583 Avg Close — Range —
Q2 2018
Shares 1,085,885 Value ($000) $3,030 Avg Close — Range —
Q1 2018
Shares 950,327 Value ($000) $4,514 Avg Close — Range —
Q4 2017
Shares 324,571 Value ($000) $1,892 Avg Close — Range —
Q3 2017
Shares 461,173 Value ($000) $969 Avg Close — Range —
Q2 2017
Shares 413,153 Value ($000) $1,934 Avg Close — Range —
Q1 2017
Shares 462,903 Value ($000) $3,620 Avg Close — Range —
Q4 2016
Shares 432,183 Value ($000) $5,299 Avg Close — Range —
Q3 2016
Shares 371,864 Value ($000) $5,797 Avg Close — Range —
Q2 2016
Shares 210,889 Value ($000) $2,558 Avg Close — Range —